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PREDICTION ON LAND USE CHANGES IN MAE TAENG
WATERSHED, CHIANG MAI PROVINCE
SURANG RATTANAPAN
A THESIS SUBMITTED IN PARTIAL FULFILLMENT
OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE
(TECHNOLOGY OF ENVIRONMENTAL MANAGEMENT) FACULTY OF GRADUATE STUDIES
MAHIDOL UNIVERSITY 2006
ISBN 974-04-7950-2 COPYRIGHT OF MAHIDOL UNIVERSITY
ACKNOWLEDGEMENT
The success of my thesis can been attributed to extensive support and
assistance from my major advisor, Assoc.Prof. Dr.Sura Pattanakiat for his meaningful
supervision, creation guidance, continuous discussion and couragement throughout the
course of this study. My thesis could not be absolutely done without his and my co-
advisor, Asst.Prof. Gritsanaruck Theeraraj and Asst Prof. Prasong Saguantam. I
deeply thank them for their valuables advice, kindness, inspiration, guidance and
encouragement in my thesis.
I wish to thank Dr. Chongrak Wachrinrat, Faculty of Forestry, Kasetsart
University, for kindness in examining the research instrument and providing
suggestions for improvement, and who was the external examiner of the thesis
defense.
I would like to special thank Miss Usawadee Phakularbdang who introduce me
about the Cellular Automata and always encourage and help me to encompass many
situations. Besides, thank Mr.Chidsanuphong Chartasa, Mr. Karn Kamonborisut and
Miss Chatchada Kaewpruksapimon who advice me using remote sensing, GIS
application and their helpful and kindness.
My special thank go to my friend, Miss Hathaikarn Sitta, Miss Tawisa
Jiyipong, Miss Khuanchanok Quecharoen, Miss Patcharawadee Khamrod and Miss
Napathida Hunhaboon who their friendship, kindness and standing me wherever
situation.
Finally, I am grateful and deep appreciate to my family: Mr. Sukon, Mrs. Riam
Rattanapan and grandmother: Mrs. Nark Maneeshine who are my inspiration, love,
encouragement, financial support and entirely care which made this thesis possible
and enabled me to undertake this thesis successfully. And my eldest brother, young
brother and elder sister-in-law for their understanding and kind supporting.
Surang Rattanapan
Fac. of Grad. Studies, Mahidol Univ. Thesis / iv
PREDICTION ON LAND USE CHANGES IN MAE TAENG WATERSHED, CHIANG MAI PROVINCE SURANG RATTANAPAN 4736361 ENTM/M M.Sc. (TECHNOLOGY OF ENVIRONMENTAL MANAGEMENT) THESIS ADVISORS: SURA PATTANAKIAT, Ph.D. (FORESTRY); GRITSANARUCK THEERARAJ, M.Sc. (TECHNOLOGY OF ENVIRONMENTAL MANAGEMENT)
ABSTRACT The objective of this study was to identify land use changes of Mae Taeng Watershed, Chiang Mai Province during 1990, 2000 and 2005 and to predict land use change in 2010 by applying Remote Sensing integrated with Markov Chain and Cellular Automata (CA-Markov). The results of the study showed that Mae Taeng Watershed covering an area 1,952.62 square kilometers has a pattern of land use that can be classified into evergreen forest, deciduous forest, forest plantation, paddy field, field crop, perennial and orchard, urban and built up land, water body and disturbed forest. The study of land use changes during 1990-2000 revealed that the area of field crop, perennial and orchard, forest plantation, disturbed forest, urban and built up land and water body have increased. While evergreen forest, deciduous forest and paddy field have decreased. And the study of land use changes during 2000-2005 revealed that each area of field crop, forest plantation and paddy field have increased. While deciduous forest, disturbed forest, perennial and orchard, evergreen forest, urban and built up land and water body have decreased. The prediction of land use of Mae Taeng Watershed in 2010 used land use in 1990, 2000 and 2000, 2005 as a base for calculations. The accuracy of the prediction in 2005 used the predicted land use map to compare with a land use map for 2005 classified by satellite interpretation. Overall accuracy of the prediction model was 71.09% and Kappa Index was 0.52. And the accuracy of the prediction in 2010 used the predicted land use map for 2010 based on land use data in 1990 and 2000 to compare with the predicted land use map in 2010 based on land use data in 2000 and 2005. Overall accuracy of the prediction model was 68.41 % and Kappa Index was 0.54.
KEY WORDS:PREDICTION/ LAND USE CHANGE/ MAETAENG WATERSHED 72 P. ISBN 974-04-7950-2
Fac. of Grad. Studies, Mahidol Univ. Thesis / v
การคาดการณรูปแบบการใชประโยชนที่ดนิในพืน้ที่ลุมน้ําแมแตง จ. เชียงใหม (PREDICTION ON LAND USE CHANGES IN MAE TAENG WATERSHED, CHIANG MAI PROVINCE)
สุรางค รัตนพันธ 4736361 ENTM/M
วท. ม. (เทคโนโลยีการบริหารส่ิงแวดลอม)
คณะกรรมการควบคุมวิทยานิพนธ: สุระ พัฒนเกยีรต,ิ Ph.D. (Forestry); กฤษณรักษ ธีรรัฐ, M.Sc. (Technology of Environmental Management)
บทคัดยอ การศึกษาครั้งนี้มีวัตถุประสงคเพื่อศึกษาการใชประโยชนที่ดินในป พ.ศ. 2533, 2543 และ 2548 และคาดการณการใชที่ดินในพื้นที่ ลุมน้ําแมแตง จ. เชียงใหม ป พ.ศ. 2553 โดยการประยุกตเทคโนโลยีการสํารวจระยะไกล (Remote sensing: RS) รวมกับแบบจําลอง Markov Chain and Cellular Automata (CA-Markov)
ผลการศึกษา พบวา ลุมน้ําแมแตง มีพื้นที่ 1,952.62 ตารางกิโลเมตร จําแนกประเภทการใชประโยชนที่ดินออกเปนปาไมผลัดใบ ปาผลัดใบ สวนปา นาขาว พืชไร พืชสวนและไมยืนตน ชุมชนและพื้นที่เปดโลง แหลงน้ํา และ ปาที่ถูกบุกรุก จากการศึกษาการเปลี่ยนแปลงการใชที่ดินในชวงป พ.ศ. 2533-2543 พบวา พืชไร พืชสวนและไมยืนตน สวนปา ปาที่ถูกบุกรุก ชุมชนและพื้นที่เปดโลง และแหลงน้ํา มีพื้นที่เพิ่มขึ้น ในขณะที่ ปาไมผลัดใบ ปาผลัดใบ และนาขาว มีพื้นที่ลดลง และ การเปลี่ยนแปลงการใชที่ดินในชวงป พ.ศ. 2543-2548 พบวา พืชไร สวนปา และนาขาว มีพื้นที่เพิ่มขึ้น ในขณะที่ ปาผลัดใบ ปาที่ถูกบุกรุก พืชสวนและไมยืนตน ปาไมผลัดใบ ชุมชนและพื้นที่เปดโลง และแหลงน้ํา มีพื้นที่ลดลง การคาดการณการใชที่ดินในลุมน้ําแมแตง จ. เชียงใหม ป พ.ศ. 2553 ใชขอมูลการใชประโยชนที่ดินป พ.ศ. 2533, 2543 และพ.ศ. 2543, 2548 เปนฐานในการคํานวณ และตรวจสอบความถูกตองของแบบจําลองการใชประโยชนที่ดินป พ.ศ. 2548 โดยนําผลจากการคาดการณการเปลี่ยนแปลงการใชประโยชนที่ดินตรวจสอบกับผลของการแปลภาพถายดาวเทียม พบวาคาความถูกตองรวม เทากับ 71.09% และคา Kappa Index เทากับ 0.52 และ ตรวจสอบความถูกตองของแบบจําลองการใชประโยชนที่ดินป พ.ศ. 2553 โดยนําผลการคาดการณการเปลี่ยนแปลงการใชประโยชนที่ดินป พ.ศ. 2553 ตรวจสอบความถูกตองของแบบจําลองจากการเปรียบเทียบฐานขอมูลการใชประโยชนที่ดินป พ.ศ. 2533, 2543 และพ.ศ. 2543, 2548 พบวาคาความถูกตองรวมเทากับ 68.41% และคา Kappa Index เทากับ 0.54 72 หนา ISBN 974-04-7950-2
CONTENTS
Page
ACKNOWLEDGEMENT iii
ABSTRACT (ENGLISH) iv
ABSTRACT (THAI) v
LIST OF TABLES viii
LIST OF FIGURES x
CHAPTER
I INTRODUCTION 1
1.1 Background 1
1.2 Objective of the study 2
1.3 Expected results 2
1.4 Scope of study 2
1.5 Conceptual Framework 3
II LITERATURE REVIEW 5
2.1 Mae Taeng Watershed, Chiang Mai Province 5
2.2 Land Use Changes 8
2.3 Geographic Information System and Remote Sensing 9
2.4 Accuracy Assessment 10
2.5 Markov Chain 12
2.6 Cellular Automata (CA) 12
2.7 Related researches 16
III MATERIALS AND METHODS 18
3.1 Materials 18
vii
CONTENTS (Cont.)
Page
3.2 Study design 18
3.2.1 Land Use Classification 20
3.2.2 Land Use Changes Detection 26
3.2.3 Prediction on Land Use Changes 26
3.2.4 Prediction Accuracy Assessment 27
3.2.5 Trend of Land Use Changes base on Socio-
Economic and Policy Aspect 27
IV RESULTS 28
4.1 Land use classification of Mae Taeng Watershed 28
4.2 Land Use Change Detection 34
4.3 Prediction of Land Use Change 42
4.4. Accuracy Assessment of Model 54
4.5 Trend of Land Use Changes base on Socio- Economic and
Policy Aspect 57
V CONCLUSION AND RECOMMENDATION 60
5.1 Conclusion 60
5.2 Recommendation 61
REFERENCE 63
APPENDIX 66
BIOGRAPHY 72
LIST OF TABLES
TABLE Page
2-1 Thematic Map Spectral Band 10
2-2 Error Matrix 11
3-1 Data sources for the study 20
3-2 Nomenclature of land use pattern of Mae Taeng Watershed 24
4-1 Land use pattern of Mae Taeng Watershed 29
4-2 Accuracy analysis of land use classification of Mae Taeng
Watershed 30
4-3 Land use changes of Mae Taeng Watershed between 1990 and
2000 based on cross-tabulation analysis 35
4-4 Land use changes of Mae Taeng Watershed between 2000 and
2005 based on cross-tabulation analysis 39
4-5 Probability of changing between 1990 and 2000 based on Markov
Chain Analysis 42
4-6 Transition area between 1990 and 2000 based on Markov Chain
Analysis 43
4-7 Probability of changing between 2000 and 2005 based on Markov
Chain Analysis 44
4-8 Transition area between 2000 and 2005 based on Markov Chain
Analysis 45
4-9 Prediction land use pattern of Mae Taeng Watershed in 2005 based
on land use data in 1990 and 2000 46
4-10 Comparison between land use map (ground truth) and prediction
land use map (CA_Markov) in 2005 48
4-11 Prediction land use pattern of Mae Taeng Watershed in 2010 based
on land use data in 1990 and 2000 49
ix
LIST OF TABLES (Cont.)
TABLE Page
4-12 Prediction land use pattern of Mae Taeng Watershed in 2010 based
on land use data in 2000 and 2005 51
4-13 Comparison between the predicted land use map in 2010 based
on land use data in 1990, 2000 (interval 10 years) and the predicted
land use map in (interval 5 years) 2010 based on land use data
in 2000, 2005 53
LIST OF FIGURES
FIGURE Page
1-1 Conceptual framework in this research 3
1-2 Study site located on Mae Taeng Watershed, Chiang Mai
province 4
2-1 Mae Taeng Watershed’s boundary 7
2-2 Von Neumann Neighborhoods and Moore Neighborhood 14
2-3 Comparison between the basic Cellular Automata and Cellular
Automata adopted in GIS 15
3-1 The study design diagram 19
3-2 False color composite image of Landsat band 4-5-3 (R-G-B)
showing Mae Taeng Watershed in 1990 21
3-3 False color composite image of Landsat band 4-5-3 (R-G-B)
showing Mae Taeng Watershed in 2000 22
3-4 False color composite image of Landsat band 4-5-3 (R-G-B)
showing Mae Taeng Watershed in 2005 23
4-1 Land use pattern of Mae Taeng Watershed in 1990 31
4-2 Land use pattern of Mae Taeng Watershed in 2000 32
4-3 Land use pattern of Mae Taeng Watershed in 2005 33
4-4 Land use changes of Mae Taeng Watershed between 1990 and
2000 36
4-5 Land use changes of Mae Taeng Watershed between 2000 and
2005 40
4-6 Prediction land use pattern of Mae Taeng Watershed in 2005
based on land use data in 1990 and 2000 47
4-7 Prediction land use pattern of Mae Taeng Watershed in 2010
based on land use data in 1990 and 2000 50
xi
LIST OF FIGURES (Cont.)
FIGURE Page
4-8 Prediction land use pattern of Mae Taeng Watershed in 2010
based on land use data in 2000 and 2005 52
4-9 Composite between land use map in 2005 which interpreted
from Landsat image (A) and prediction land use in 2005 (B) 55
4-10 Composite between prediction land use map in 2010 based on
land use data in 1990 and 2000 (A) and prediction land use
map in 2010 based on land use data in 2000 and 2005 (B) 56
Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Technology of Environmental Management) / 1
CHAPTER I
INTRODUCTION
1.1 Background
Land use is a pattern of human activities undertaken within a socio-economic
context, increasing of population, technology development and policy. While the
necessary use of the land is increasing, it has limitation and continuous declining. The
land use change is driven by the interaction in time between biophysical and human
dimensions that implied to past and present human activities. The watershed is one of
the sensitive areas affected by the land use changes. The land use in Mae Taeng
Watershed is used for a variety of activities. Land use patterns are including paddy
field, field crop, perennial and orchard, urban and built-up land, forest plantation.
Natural land area is covered by dry evergreen forest, hill evergreen forest, mixed
deciduous, dry dipterocarp forests. The forest in Mae Taeng Watershed tends to be
rapidly increasing in uses. From the LANDSAT-5(TM) in 1990 and 2005, the area of
forest was estimated to be 1,633.54 sq.km. and 1,304.90 sq.km, respectively. Every
year extensive areas of agricultural and natural forest in Mae Taeng Watershed are
degraded and turned into wastelands over time due to human interventions. Depletion
of forest has an important impact on socio-economic development and ecological
balance. High population growth rate in Mae Taeng Watershed is one of the main
causes for rapid deterioration of the physical environment and natural resource base.
We can understand the tendency of land use change in the future by the prediction on
land use change and forecast which based on models in the future for data supporting
land use planning and interactive environment to simulate “what-if” scenarios.
Therefore scenario analysis with land use models can support land use planning and
policy (1).
Various models have been used to predict the land use changes. They are
normally based on statistic approach. One of the well known models is Markov Chain,
Surang Rattanapan Introduction / 2 which is selected to use, in this study. However, Markov Chain is available only to
identify the whole area changes for each pattern. Therefore, the change of specific area
could not be classified. Thus, Cellular Automata Model which shown a potential
analysis spatial aspect is introduced to use in this study.
1.2 Objectives of the study
1.2.1 To identify land use pattern and changes of Mae Taeng Watershed in
1990, 2000 and 2005.
1.2.2 To predict the land use change in 2010. Use Markov Chain and Cellular
Automata Model.
1.3 Expected result
Land use map of Mae Taeng Watershed, Chiang Mai Province in 2010 to
support for land use planning and management.
1.4 Scope of the study
1.4.1 Study area
The study area covers Mae Taeng Watershed in Chiang Mai Province,
approximately 1,952.62 square kilometers as shown in Figure 1-2.
1.4.2 Scope of procedure
1. The land use pattern in Mae Taeng Watershed was classified using
satellite images with computer assisted interpretation and visual interpretation method.
For temporal study, three time periods of 1990, 2000 and 2005 have been selected to
assess the change of land use pattern.
2. Land use pattern in Mae Taeng Watershed can be classified into nine
land use categories including evergreen forest, deciduous forest, forest plantation,
paddy field, field crop, perennial and orchard, urban and built up land, water body and
disturbed forest.
Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Technology of Environmental Management) / 3
3. To apply Markov Chain and Cellular Automata Model combine with
remote sensing technique to predict land use change. The results may provide some
useful information for planer.
1.5 Conceptual Framework
Figure1-1 Conceptual Framework in this research
Surang Rattanapan Introduction / 4
Figure1-2 Study site located on Mae Taeng Watershed, Chiang Mai Province
Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Technology of Environmental Management) / 5
CHAPTER II
LITERATURE REVIEWS
2.1 Mae Taeng Watershed, Chiang Mai Province
Mae Taeng Watershed (2) is subcatchment of Ping Watershed is one of
twenty-five watershed in Thailand. Mae Taeng Watershed has been selected as the
study area for this study. It is the upper catchments basin Ping Watershed and
occupied a rapid change in land use. It approximately area is 1,952.62 square
kilometers, located at latitude 19˚ 05΄ to 19˚ 45΄north and longitude 95˚ 25΄to 99˚
05΄east. Mae Taeng Watershed is the north part of Chiang Mai Province. The origins
of Mae Taeng River are Dan Laos Mountain, border of Thailand nearby Myanmar,
flow through Wang Hang District and Chiang Dao and meet Mae Ping River close to
Administrative office of Mae Taeng District. Most of areas are mountains with few
patches of plain. Forests are quite abundant with the elevation between 350 – 1,200
meters above Mean Sea Level (MSL).
The area locates in 3 districts covers 15 tambon of Chiang Mai Province.
Its boundary is the followings as shown in Figure 2-1.
North bounded by The Union of Myanmar
South bounded by Mae Taeng District, Chiang Mai Province
East bounded by Pai District, Mae Hong Sorn Province
West bounded by Chiang Dao District, Chiang Mai Province
General Topography
Mae Taeng Watershed consists of mountain ranges and height slope. The
most area of watershed is mountain range approximately 90 percent. Slope more than
16 percent, the height of mountain is between 600-2,175 MSL and mean
approximately 1,000 meter. Every flat plain have the communities and agriculture.
Surang Rattanapan Literature Reviews / 6
Weather and Climate
The study area (3) is influence by tropical monsoon annually. The mean
annual minimum and mean annual maximum temperatures are 19.22° C and 30.61° C,
respectively, with a mean annual temperature of 24.92° C. According to the general
annual rainfall pattern, most areas of the country receive precipitation 1,446.16 mm a
year.
Geology
The areas are mountains including vary type of rocks. Most are granite rocks
especially in the southern. Sedimentary and metamorphic rocks can be founded
upward from the middle all over the northern of the area. Furthermore, there are
alluvial sediments along the stream.
Hydrology
As a general rule, tributaries in a stream system join at angles of less than
90°. This gives the system a branching pattern which is like that formed by the limbs
of a tree, and hence is called dendritic, which means treelike. The streams of area are
dendritic patterns because of the mountain topography. The origin of the stream is in
Wang Haeng District, close to Mynmar, southwestward to the Ping River at Mae
Taeng District and flows all year around.
Soil
The soil series in Mae Taeng Watershed include 14 difference classification
such as Lampang series, Lat Ya series, Tha Yang series, Tha Yang/ Lat Ya
association, Hang Dong series, Korat series, Hang Chat series undulating phase, Mae
Rim series undulating phase, Mae Rim series rolling phase, Mae Taeng series
undulating phase, Pak Chong series undulating phase, Alluvial complex, and Slope
Complex. However over 90% of the area is classified under soil type “Slope
Complex”.
Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Technology of Environmental Management) / 7
Position ………...…...Reference System Geographic Projection…...……... Universal Transverse Mercator UTM……………Zone 47 North Datum……...…….. Indian 1975 Spheroid…………...…... Everest Grid cell size………..…25 meter Scale…………...…….. 1: 50,000
Source: Department of Environmental Quality Promotion, (No date)
Figure 2-1 Mae Taeng Watershed’s boundary
Source: Department of Environmental Quality Promotion, (No date)
Surang Rattanapan Literature Reviews / 8 2.2 Land Use Changes
Land use brings land to treat of human need agriculture and residential. (4)
Land use is continuous transition up to human use but soil property is not change.
Duchanee (5) found that type and pattern of land use proceeded from 3
important factors, land, society and economy. These factors influence suitability of
land use which identified by physical factors. Moreover, pattern of residential,
technologies, science of land use and social complex, attitude, cost of product, income,
market and labor influence the pattern of land use.
Abduliah (6) studied land cover in Mae Taeng Watershed, Chiang Mai
Province. He found that causes of human intervention in forest depletion are
population growth, cost of product, and market need. Furthermore, Pennapa (7) found
that land cover and land use change were influenced by population, cost of product,
and level of economic and social development, technology and policy.
Thongchai (8) said that causes of land use changes proceed from the depletion
of natural forest into another land use type by human. The important factor as
following;
• Socio-Economic such as increasing population, human
migration, support of economic plants for export, technological development for
increasing product, infrastructure development, forest industrial development,
problem of capitalist, depletion of forest, forest fire and insect disease.
• Laws and policy.
• Physical factor such as climate and water body.
The land covers change as an alteration in the surface components of a
landscape (9). The rate of the change occurring to land cover can be viewed as either
abrupt or gradual. The clearing of forest for cultivation or the fire burn left as a result
of a brushfire represent abrupt changes in land cover characterized by distinct
boundaries. These changes are relatively easy to detect and measure on satellite
imagery.
There are, however, far more subtle changes that take place in the landscape
that occurring without distinct boundaries such as the gradual deterioration in
Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Technology of Environmental Management) / 9
vegetation cover associated either drought or overgrazing. This type of change is
usually more difficult to detect on satellite imagery because of a slight variation in the
spectral reflectance of large area.
2.3 Geographic Information System and Remote Sensing
2.3.1 Geographic Information Systems (GIS)
Geographic Information Systems (GIS) have been defined in various
ways such as its disciplinary, like;
Paul J. Curran (10) define that geographic information systems are
information system which is based on data referenced by geographic coordinates.
TYDAC Technologies Inc. (11) define that “Geographic Information
Systems are software package which can be used to create and analyze spatial
information. With such system, map, air photos and diagrams describing natural and
man-made features can be translated into an electronic code which can be recalled
modified and analyze.”
A simple definition is that a GIS is an organized collection of computer
hardware, software, and geographic data designed to efficiently capture, store, update,
manipulated, analyze, and display all form of geographically referenced information.
2.3.2 Remote Sensing (RS)
Remote sensing is the sciences and art of obtaining information about
and object, area, or phenomenon through the analysis of data acquired by a device that
is not in content with the object, area, or phenomena under investigation (12).
Remote sensing is one of the fastest growing, most exciting and
powerful techniques to scientists concerned with environmental questions form field
as diverse as geology, forestry, agriculture and land use change.
The Thematic map is usually of an environmental factor for which there
are few traditional data sources, for example land cover, estuarine sediment load, soil
moisture, vegetation biomass and rainfall (13). Thematic map data are available in
Surang Rattanapan Literature Reviews / 10 seven narrow bands. Six bands have improved spatial (ground) resolution of 30 meter
and Band 6 (thermal infrared) has a resolution of 120 meter. Each of which has
difference specific object visibility as shown in Table2-1.
Table 2-1 Thematic Map Spectral Band
Band
No
Description
Spectral Feature and Applications
1 Blue 0.45-0.52 Good water penetration, strong chlorophyll absorption.
Mapping of coastal water areas. Differentiation between soil
and vegetation.
2 Green 0.52-0.60 Matches green reflectance peak of healthy vegetation; Sensing
the health of vegetation.
3 Red 0.63-0.69 Chlorophyll absorption band, very strong vegetation
absorption. Differentiation between plant species thanks to
the chlorophyll absorption assessment.
4 Near-IR 0.76-0.90 Complete absorption by water; High land/water contrast, very
strong vegetation reflectance. Survey water body delineation.
5 Near-middle
infrared
1.55-1.75 Very moisture sensitive. Differentiation between clouds
and snow cover. Measurement of vegetation moisture and soil
moisture; Reflectance of most rock surfaces.
6 Thermal IR 10.40-
12.50
Thermal imaging and mapping. Information on plant heat stress.
Thermal data on geologic information.
7
Middle
Infrared
2.08-2.35
Good geological discrimination. Hydrothermal mapping. Rock
type discriminations (Mineral and petroleum).
Source: Lillesand et al., (12)
2.4 Accuracy Assessment
Accuracy assessment is the procedure used to quantify the reliability of a
classified image and use to make sure the model reacts as expected (14). The result
from the prediction was compared to the ground truth and the maximum likelihood
classification of 2005 and assume that the maximum likelihood produce a completely
correct result.
Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Technology of Environmental Management) / 11
An error matrix is way to effectively compare two maps quantitatively. Its
consists of a square array of numbers set out in row and columns that express the
number of sample units assigned to each land use type as compared to what is on the
actual ground. The comparison was done by using the error matrix and Kappa Index to
identify overall accuracy of model as shown in Table 3.2.
Table 2-2 Error matrix
Ground truth data 1 2 3 r Row Total
1 n11 n12 n13 n1k n1+
2 n21 n22 n23 n2k n2+
3
n31 n32 n33 n3k
n3+
k nk1 nk2 nk3 nkn nk+ Pred
ictio
n da
ta
Column Total n+1 n +2 n+3 n+k n
Sources: Congalton and Green, 1999
Overall Accuracy =
Procedure’s Accuracy =
User’s Accuracy =
Overall Kappa =
When N = Total number of observations in error matrix,
k = Total of rows, columns in error matrix,
nii = The number of observations in row i column i
ni+ = Total of observations in row i (right of matrix),
n+i = Total of observations in column i (bottom of the matrix)
i
ii
nn
∑
∑ ∑
=++
= =++
⋅−
⋅−
k
iii
k
i
k
iiiii
nnN
nnnN
1
2
1 1
)(
)(
j
jj
nn
+
n
nk
iii∑
=1
Surang Rattanapan Literature Reviews / 12 2.5 Markov Chain
Markov Chain (15) is mathematics model described each of change process
by use i.e., land use data in the past and present for prediction trend of land use change
in the future.
The Markov Chain was use to analyze the probability of each land use
patterns. The probability of moving from one state j to another state k is called a
transition probability, Pjk, and it is given for every ordered set of states. These
probabilities can be represented in the form of a transition matrix P.
When (Vj) × (Pjk) = Proportion of Land use of Second date.
Pjk = F (Land use human activities).
= Matrix of probability of land use change (Matrix).
Vj = Proportion of land use of first date (Vector).
J = Type of land use in first date.
K = Type of land use in Second date.
2.6 Cellular Automata (CA)
CA was originally conceived by Ulam and Von Neumann in the 1940s to
provide a formal framework for investigating the behaviors of complex, extended
systems.
A CA (16) is an array of identically programmed automata, or cells which
interact with one another in a neighborhood and have definite state.
P11, P12, P13… P1m P21, P22, P23… P2m
:
V1, V2, V3 …Vn Vj × Pjk =
Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Technology of Environmental Management) / 13
Michael (17) said that CA operationalzed to model life itself as part of the
“Game of life”. Data models are also based on the uniform grid cell tessellation of
geographic space. The CA incorporate an explicit set of transition rules, defined by the
modeler and designed to allow for dynamic modeling. CA have been the focus of great
attention over the years because of their ability to generate a rich spectrum of very
complex patterns of behavior out of sets of relatively simple underlying rules.
Moreover, they appear to capture many essential features of complex self-organizing
cooperative behavior observed in real systems.
2.6.1 Rules of the Game of Life
CA (18) has been used as models in many areas of Physical Sciences,
Biology and Mathematics. As well as social sciences, one of the simplest examples of
CA is Conway’s Game of Life, for example can be implemented in such a way that the
automata live or die according to the following criteria.
1. A dead cell with exactly three live neighbors becomes a live cell.
2. A live cell with two or three live neighbors stays alive.
3. In all other cases, a cell dies or remains dead.
2.6.2 Component of Cellular Automata
Lattice (Cell space)
The cell space is composed of individual cell. Theoretically, these cells
may be in any geometric shape. Yet, most CA adopts regular grids to represent such
space, which make CA very similar to a raster GIS.
Surang Rattanapan Literature Reviews / 14
Cell States
The states of each cell may represent any spatial variable, the various
types of land use. The states that change with respect to time are considered as
functional for example population and land use. The cells have just two states: alive
and dead.
Time
A CA will evolve at a sequence of discrete time steps. At each step, the
cells will be updated simultaneously based on transition rules.
Transition rules
In CA transition rules are deterministic and unchanged during
evolution. Enforcing the rule in coordinating with neighborhood affects the state in
new generation direc
Neighborhoods
There are two types of neighborhoods in conventional CA. Each cell
has two neighbors in one-dimensional CA. Where as in two dimensional CA model
there are two ways to define it. Von Neumann has considered four neighboring cells as
neighbors. Moore considered eight neighboring cells as neighbors as shown in Figure
2-2.
Von Neumann Neighborhood Moore Neighborhood
Figure 2-2 Von Neumann Neighborhoods and Moore Neighborhood
CA models are also based on the uniform grid cell of geographic space.
And like the simple raster GIS model (19)
The following Figure 2.3 shows the comparison between the basic CA
and CA adopted in GIS. The left side is characteristics of basic CA and right side is
modification in these characteristics of CA adopted in GIS.
Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Technology of Environmental Management) / 15
Figure 2-3 Comparison between the basic Cellular Automata and Cellular Automata
adopted in GIS
Note: the figure is taken from Rinaldi (19)
Surang Rattanapan Literature Reviews / 16 2.7 Related Researches
Jinn-Guey Lay (20) adapted the spatial evolution concept embedded in CA
and applied it to land use change study in Tansui Watershed. Digital land use data of
two separate years (1971 and 1977) were complied and analyzed using GIS software.
The CA can help to reveal the complex process of land use change, as shown in the
various changes result from a same pattern of neighborhood. Such finding indicates
that a deterministic approach of CA may not fit with real world situation. The purpose
of this analysis is to identify the relationship between land use change and surrounding
environment. Finding from this analysis may reveal the dynamic process of land use
change and thus enhance our understanding on transition rules, the heart of a CA.
Joseph (21) studied about modeling land use and land cover dynamics in the
Ecuadorian Amazon were determined using a time-series of remotely sensed data
using an experimental classification scheme resulting in a time-series data set
including land use and land cover images for 1973, 1986, 1989, 1996, and 1999. The
model works by simulating the present by extrapolating from the past using the image
time-series, validating the simulations the remotely sensed time-series of past
conditions and through field observations of current conditions, allowing the model to
iterate to the year 2010.
Sura (22) applied Markov Chain Model and Cellular Automata by choosing
satellite imageries in 1989 and 2003 to classify coastal land use patterns of Krabi
province and predict land use change for the year 2013, based on the data of 2003. The
result shows that, from 1989 to 2003, the area of Para rubber plantation, mangrove
forest, and tropical rain forest are obviously decreased. Meanwhile, others area, oil
palm plantation, and opened area are obviously increased.
Noppon (23) was integrated a cellular automata model with remote sensing to
keep track of land use change of Ban Laem District, Phetchaburi Province between
1994 and 2004. The model focuses on three categories of the land use i.e., existing
mangrove, human community and activities, degraded or regenerated mangrove area.
A principle rule of cellular automata is that all the states can be switched to another
state by considering their surrounding environments, transition rules of Moor’s
neighborhood are applied to each cell (pixel) in each year. The results of the prediction
Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Technology of Environmental Management) / 17
are compared to a maximum likelihood classification to test the model. Results of the
study showed that the CA model produces an overall accuracy of 91.07%. However,
the category mangrove area only showed 42.98 % prediction accuracy.
Usawadee (24) applied Geo-Informatics integrated with Markov Chain and
Cellular Automata (CA-Markov) to classify and predict land use of Krabi Province in
2004 by using land use in 1990 and 2000 as base for calculating. The accuracy of
prediction model was operated using the prediction land use map to compare with land
use and was classified using the hybrid classification process. Overall accuracy of the
prediction model was 74.83% and Kappa Index was 0.629.
Surang Rattanapan Materials and Methods / 18
CHAPTER III
MATERIALS AND METHODS 3.1 Materials
The hardware and software utilized in this study are as the following.
3.1.1. Hardware
1. Notebook computer
- CPU Intel Pentium M 1.6 GHz
- 512 Mb SDRAM.
- Hard disk 60 GHz.
2. Printer
3. Camera
3.1.2. Software
1. Operation System: Microsoft Windows XP
2. GIS software: Arc View GIS 3.3
3. ERDAS IMAGIN 8.7
4. ARCGIS 9.1
5. IDRISI 3.2
3.2 Study design
The study combines five main procedures including: land use classification,
land use change detection, prediction on land use change, accuracy assessment and
trend of land use change based on socio-economic and policy aspect as shown in
Figure 3-1.
Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Technology of Environmental Management) / 19
Figure3.1 The study design diagram
Surang Rattanapan Materials and Methods / 20
3.2.1 Land Use Classification
In this study, image processing was conducted in five steps as image
import, preprocessing, image enhancement and nomenclature, image classification,
and image post analysis.
3.2.1.1 Image import
Landsat Thematic Mapper data of path/row131/047 and
131/046 of 1990, 2000 and 2005 was used as data based for the land use classification
scheme. A category of the secondary data including spatial data and non spatial data as
shown in Table 3-1, Figure 3-2, Figure 3-3, and Figure 3-4.
Table 3-1 Data sources for the study
RASTER IMAGE
Data Path/Row Bands Resolution Date Source
Landsat -5 (TM)
131/047 and 131/046 1-5,7 25 m 1990 GISTDA*
Landsat- 5 (TM)
131/047 and 131/046 1-5,7 25 m 2000 GISTDA*
Landsat- 5 (TM)
131/047 and 131/046
1-5,7
25 m 2005
GISTDA*
VECTER DATA
Data Type Scale Date Source
Political boundary Polygon
1 : 50,000 No reference
DEQP**
Remark *GISTDA (Geo-Informatics and Space Technology Development Agency (Public Organization)),
**DEQP (Department of Environment Quality Promotion)
Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Technology of Environmental Management) / 21
Figure 3-2 False color composite image of Landsat band 4-5-3 (R-G-B) showing
Mae Taeng Watershed in 1990
Source: LANDSAT imageries analysis
Surang Rattanapan Materials and Methods / 22
Figure 3-3 False color composite image of Landsat band 4-5-3 (R-G-B) showing
Mae Taeng Watershed in 2000
Source: LANDSAT imageries analysis
Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Technology of Environmental Management) / 23
Figure 3-4 False color composite image of Landsat band 4-5-3 (R-G-B) showing
Mae Taeng Watershed in 2005
Source: LANDSAT imageries analysis
Surang Rattanapan Materials and Methods / 24
3.2.1.2 Pre-processing
The preprocessing state removes systematic errors from the
data. The operations are the correction of radiometric and geometric errors, namely
calibration of the detected signal and registration of the image data to true surface
position. In geometric correction of this study, the co-register by image to image
method was utilized. The image was rectified to common Universal Transverse
Mercator coordinate system (UTM) zone 47, Everest spheroid and Indian 1975 datum.
3.2.1.3 Image Enhancement and Nomenclature
The aim of image enhancement to improvement to the
image, can be divided a variety of land cover objects such as vegetation water that
operate on individual pixels without reference to their spatial context, and that also
make use of spatial information. Normally, each of which is repeatable by the
wavelength reflectance. The first type can generally be referred to as contrast
modification, and the second as spatial filtering and nomenclature was determination
of image classification frame. It was classified into nine categories as shown in Table
3-2.
Table 3-2 Nomenclature of land use pattern of Mae Taeng Watershed
Type Code Land use pattern
1 1 Evergreen forest
2 2 Deciduous forest
3 3 Forest plantation
4 4 Paddy field
5 5 Field crop
6 6 Perennial and orchard
7 7 Urban and built up land
8 8 Water body
9
9
Disturbed forest
Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Technology of Environmental Management) / 25
3.2.1.4 Image Classification
Image classification is the process of making quantitative
decision from image data, grouping pixels of the image into classes to represent
different physical object. The procedures of the classification consist of unsupervised
classification and supervised classification.
Unsupervised classification
Unsupervised classification is performed using algorithm
called the Iterative Self-Organizing Data Analysis Technique (ISODATA). I
performed an unsupervised classification with 30 clusters.
Supervised classification
The supervised classification performed by the method of
Maximum likelihood is to delineate a given pixel to the class that generated from the
spectral signature analysis. For avoiding bias, each training area was not least than 30
pixels and distributed around study area. In this study, it was classified nine land use
categories. The random recheck by field observation convincing the correct
classification.
3.2.1.5 Image Post Classification
Image post classification was required to correct the
classification manually. A mistake of interpretation by supervised classification was
eliminated in this step. Previous classifications were used only digital number (DN)
with statistic analysis for classification group of data. It used to regroup a cluster to
our interested categories. In this study, according to the characteristic of land cover in
Mae Taeng Watershed, it can be classified land use pattern into nine categories.
3.2.1.6 Classification Accuracy Classification Accuracy was calculated by confusion matrix
accuracy method. That was comparing classification result with ground truth.
Numbers of check points were calculated by binomial probability theory. (Equation 3-
1)(Clark University, 2003). Then correcting accuracy was not less than 80%.
Surang Rattanapan Materials and Methods / 26
2~))((2
E
qpZN = (Equation 3-1)
When N = Number of samples
Z = the standard score required for the desired level of
confidence in the assessment (Z= 1.96 for 95%
confidence, Z= 1.86 for 80% confidence)
P = Expected or calculated accuracy (in percentage)
q = 100-p
E = Allowable error
3.2.2 Land Use Changes Detection
The land use changes detection of Mae Taeng Watershed, from 1990 to
2000 and 2000 to 2005, were analyzed using cross-tabulation analysis. The land use
changes area was also identified.
3.2.3 Prediction on Land Use Changes
The land use data in 1990 and 2000 were basely used to identify the
prediction of land use changes in 2005, 2010. And use the land use data in 2000 and
2005 were basely used to identify the prediction of land use changes in 2010 for
compared the prediction of land use change in 2010 interval 10 and 5 years, as
following;
3.2.3.1 Prediction using Markov Chain Model
The land use data in 1990 and 2000 were manipulated by
Markov Chain Model in order to identify the probability and transition values of
changing, which might be occurred in 2005 and 2010.
And the land use data in 2000 and 2005 were manipulated by
Markov Chain Model in order to identify the probability and transition values of
changing, which might be occurred in 2010.
3.2.3.2. Prediction using Cellular Automata Model
The probability and transition values of change from Markov
Chain manipulation were then utilized by 5×5 cellular matrix analysis. According to
Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Technology of Environmental Management) / 27
this matter, each pixel could be identified for their own class. Thus, the prediction land
use map in 2005 and 2010 (based on land use data in1990 and 2000) and 2010 (based
on land use data in 2000 and 2005) was then be classified.
3.2.4 Prediction Accuracy Assessment
An error matrix is a way to effectively compared two maps
quantitatively. The comparison was done by using the error matrix and Kappa Index to
identify overall accuracy of model. Land use map (by model) in 2005 was used to
make sure the model reacts as expected. The result from the prediction was compared
to the maximum likelihood classification of 2005 by using pairwise comparison. It
was assumed that the maximum likelihood classification produced a completely
correct result. And the accuracy of the prediction in 2010 was compared by the
prediction land use map 2010 based on land use data in1990, 2000 and 2000, 2005.
The comparison was done by using the accuracy assessment. The error
matrix and Kappa Index were used to identify overall accuracy of model in this study.
3.2.5 Trend of Land Use Change based on Socio-Economic and Policy
Aspect
The predicting model and map of land use in 2010 is sometime not
adequate for suitable future land use planning although the result model had been
verified. Thus, trend of land use change based on socio-economic and policy
aspect,was also analysis using in-depth interviewing method.
The sample was drawn from local key informant that are;
1. Village leader (deputy of the group of people utilizing water from
Mae Taeng Watershed in agricultural part).
2. Other stakeholder such as NGOs (member of committee of the
federation of northern agriculturalist (network of the northern people organization) and
chairman of the deputy of people in natural resources and environmental part of
Chiang Mai Province.
Surang Rattanapan Results / 28
CHAPTER IV
RESULTS
4.1 Land use classification of Mae Taeng Watershed
The result of land use pattern classification from Landsat imageries in 1990,
2000, 2005 can be briefly identified as following;
It was found that land use pattern in 1990 were mainly classified as evergreen
forest with the area of 1,483.19 square kilometers or 75.96 %. Meanwhile the other
were included deciduous forest, disturbed forest, field crop, paddy field, perennial and
orchard, urban and built up land, forest plantation and water body with the area of
150.35, 141.47, 103.82, 50.48, 10.14, 9.04, 3.63 and 0.50 square kilometers,
respectively as shown in Table 4-1and Figure 4-1.
The land use pattern in 2000 were mainly classified as evergreen forest with
the area of 1,259.16 square kilometers or 64.49 %. Meanwhile the other were included
field crop, disturbed forest, deciduous forest, perennial and orchard, forest plantation,
paddy field, urban and built up land and water body with the area of 228.20, 165.69,
128.47, 59.64, 46.21, 38.34, 25.50 and 1.41 square kilometers, respectively as shown
in Table 4-1 and Figure 4-2.
The land use pattern in 2005 were mainly classified as evergreen forest with
the area of 1,182.33 square kilometers or 60.55 %. Meanwhile the other were included
field crop, disturbed forest, deciduous forest, forest plantation, paddy field, perennial
and orchard, urban and built up land and water body with the area of 310.94, 138.77,
122.57, 72.34, 56.25, 45.40, 22.90 and 1.12 square kilometers, respectively as shown
in Table 4-1 and Figure 4-3.
Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Technology of Environmental Management) / 29
Table 4-1 Land use pattern of Mae Taeng Watershed
Year 1990 Year 2000 Year 2005 Land use pattern
km² % km² % km² %
Evergreen forest 1,483.19 75.96 1,259.16 64.49 1,182.33 60.55
Deciduous forest 150.35 7.70 128.47 6.58 122.57 6.28
Forest plantation 3.63 0.19 46.21 2.37 72.34 3.70
Paddy field 50.48 2.59 38.34 1.96 56.25 2.89
Field crop 103.82 5.32 228.20 11.69 310.94 15.92
Perennial and orchard 10.14 0.52 59.64 3.05 45.40 2.32
Urban and built up 9.04 0.46 25.50 1.31 22.90 1.17
Water body 0.50 0.03 1.41 0.07 1.12 0.06
Disturbed forest 141.47 7.25 165.69 8.49 138.77 7.11
Total area (km²)
1,952.62 100.00 1,952.62 100.00
1,952.62 100
Source: LANDSAT imageries analysis and ground survey
The accuracy of the interpretation was clarified using number of 62 ground
check point in 2005. Thus, the accuracy of land use classification identified in 2005 is
80.64 % as shown in Table 4-2.
The overall accuracy of interpretation in 2005 it was found that the overall
accuracy was 80.64 % and the Kappa index was 0.74. The missing accuracy was from
interpretation, land use changes influenced by economic such as the higher price of
agriculture product. The expended of continuous agriculture area that it’s depend on
the increasing type of product and Mae Taeng Watershed has been affected from
natural disaster such as flood disaster and landslide. The disaster affect and economic
growth are a factor of the land use change.
Surang Rattanapan Results / 30 Table 4-2 Accuracy analysis of land use classification of Mae Taeng Watershed
Reference Data
Cla
ss1
Cla
ss2
Cla
ss3
Cla
ss4
Cla
ss5
Cla
ss6
Cla
ss7
Cla
ss8
Cla
ss9
Total area
Class1 25 2 - 1 - - - - 3 31 Class2 - 5 - - - - - - - 5 Class3 - - 3 - - - - - 1 4 Class4 - - - 2 - - - - - 2 Class5 - - - 2 8 - - - - 10 Class6 - - - - 1 2 - - - 3 Class7 - - - - - - 2 - - 2 Class8 - - - - - - - 1 - 1 C
lass
ifica
tion
Dat
a in
200
5
Class9
- - - - 2 - - - 2
4 Total area 25 7 3 5 11 2 2 1 6 62
Source: Ground check point in 2005
Remark: Class 1 Evergreen forest
Class 2 Deciduous forest
Class 3 Forest plantation
Class 4 Paddy field
Class 5 Field crop
Class 6 Perennial and orchard
Class 7 Urban and built up land
Class 8 Water body
Class 9 Disturbed forest
Overall accuracy = 80.64 % Overall Kappa = 0.74
Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Technology of Environmental Management) / 31
Figure 4-1 Land use pattern of Mae Taeng Watershed in 1990
Source: LANDSAT imageries analysis
Surang Rattanapan Results / 32
Figure 4-2 Land use pattern of Mae Taeng Watershed in 2000
Source: LANDSAT imageries analysis
Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Technology of Environmental Management) / 33
Figure 4-3 Land use pattern of Mae Taeng Watershed in 2005
Source: LANDSAT imageries analysis
Surang Rattanapan Results / 34 4.2 Land Use Change Detection
The land use changes differentiations were manipulated using cross-
tabulation analysis. The result can be identified as following.
4.2.1 Land use pattern change between 1990 and 2000
The comparison of land use change between 1990 and 2000 was
analyzed using cross-tabulation analysis. It was found that land use patterns which
most gradually increased was field crop with the area of 124.39 square kilometers was
maintained into field crop and changed into perennial and orchard, evergreen forest,
disturbed forest, urban and built up land, forest plantation, paddy field, deciduous
forest and water body with the area of 39.95, 23.46, 21.29, 6.93, 5.08, 3.08, 2.69, 1.18
and 0.19 square kilometers, respectively. Meanwhile, land use pattern which most
gradually decreased was evergreen forest with the area of 224.09 square kilometers
was maintained into evergreen forest and changed into field crop, disturbed forest,
forest plantation, perennial and orchard, deciduous forest, paddy field, urban and built
up land and water body with the area of 1,168.26, 136.23, 111.99, 33.98, 12.66, 8.52,
6.55, 4.23 and 0.76 square kilometers, respectively. The differentiations of each class
tended to be the other as shown in Table 4-3 and Figure 4-4.
Land use change between 1990 and 2000. It was found that forest
became disturbed forest and then the disturbed forest continuously became into
agricultural. The cultivations are only in wet season and the area was ignored in dry
season. There is burning of weed without fire control before the cultivated season, so
the fire invaded the forest area. This makes continuously increasing of invaded area. A
lot of small invaded areas has been linked together then become a larger area. Most of
people in the area earn a living in agriculture especially in field crop such as rice
farming, corn, bean, red bean and garlic. The expanding of cultivation area was
because of the higher price of agriculture product.
Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Technology of Environmental Management) / 35
Table 4-3 Land use changes of Mae Taeng Watershed between 1990 and 2000 based on
cross-tabulation analysis
LAND USE 2000
Cla
ss1
Cla
ss2
Cla
ss3
Cla
ss4
Cla
ss5
Cla
ss6
Cla
ss7
Cla
ss8
Cla
ss9
Tot
al
area
Class1 1,168.26 8.52 33.98 6.55 136.23 12.66 4.23 0.76 111.99 1,483.18 Class2 10.67 115.34 0.00 0.66 5.68 3.64 0.07 0.11 14.12 150.29 Class3 0.10 0.00 3.01 0.00 0.30 0.12 0.00 0.09 0.00 3.62 Class4 7.20 0.82 0.00 23.91 6.94 5.91 5.38 0.00 0.29 50.45 Class5 21.29 1.18 3.08 2.69 39.95 23.46 5.08 0.19 6.93 103.85 Class6 0.20 0.63 0.00 0.63 1.43 5.72 1.39 0.00 0.15 10.15 Class7 0.03 0.01 0.19 1.10 0.11 0.76 6.88 0.00 0.00 9.08 Class8 0.12 0.04 0.00 0.00 0.10 0.00 0.01 0.23 0.00 0.50
LA
ND
USE
199
0
Class9
51.22 1.96 5.95 2.78 37.50 7.37 2.47 0.02 32.23 141.50 Total area 1,259.09 128.50 46.21 38.32 228.24 59.64 25.51 1.40 165.71 1,952.62 Total area
change -224.09 -21.79 42.59 -12.13 124.39 49.49 16.43 0.90 24.21 512.02
Source: Data analysis
Remark: 1. Area unit is square kilometer
2. Positive change = increasing aspect
Negative change = decreasing aspect
3. Row are classes from 1990 image
Column are classes from 2000 image
4. Class 1 Evergreen forest
Class 2 Deciduous forest
Class 3 Forest plantation
Class 4 Paddy field
Class 5 Field crop
Class 6 Perennial and orchard
Class 7 Urban and built up land
Class 8 Water body
Class 9 Disturbed forest
Surang Rattanapan Results / 36
Figure 4-4 Land use changes of Mae Taeng Watershed between 1990 and 2000
Source: Analysis
Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Technology of Environmental Management) / 37
Legend
When
Class 1 Evergreen forest
Class 2 Deciduous forest
Class 3 Forest plantation
Class 4 Paddy field
Class 5 Field crop
Class 6 Perennial and orchard
Class 7 Urban and built up area
Class 8 Water body
Class 9 Disturbed forest
Figure 4-4 (Cont.) Legend of Land use changes of Mae Taeng Watershed between
1990 and 2000
Surang Rattanapan Results / 38
4.2.2 Land use pattern change between 2000 and 2005
The comparison of land use change between 2000 and 2005 was
analyzed using cross-tabulation analysis. It was found that land use pattern which most
gradually increased was field crop with the area of 82.78 square kilometers was
maintained into field crop and changed into evergreen forest, disturbed forest, paddy
field, forest plantation, perennial and orchard, urban and built up land and deciduous
forest with the area of 191.17, 12.92, 7.37, 7.10, 6.19, 1.71, 1.66 and 0.10 square
kilometers, respectively. Meanwhile, land use patterns which most gradually
decreased was evergreen forest with the area of 76.76 square kilometers was
maintained into evergreen forest and changed into field crop, disturbed forest, forest
plantation, paddy field, perennial and orchard and urban and built up land with the
area of 1,119.74, 66.47, 51.70, 13.35, 5.53, 1.24 and 1.06 square kilometers,
respectively. The differentiations of each class tended to be the other as shown in
Table 4-4 and Figure 4-5
Trend of land use change between 2000 and 2005. It was found that
forest became disturbed forest and then the disturbed forest continuously became into
agricultural and turned into wastelands agree with land use change between 1990 and
2000 but its have different trend . It was found that disturbed forest was trend to
decrease since the policy of the Department of Forestry. However, the Department of
Forestry has been set up a policy of pinery forest plantation to compensate the
disturbed forest. This caused more forest plantation area in 2005.
The predicted land use map in 2010 based on land use data in 1990 and
2000 using CA_Markov Model. But land use change between 2000 and 2005 has
another factor influence to trend of land use change of 5 years. Thus, limitation of
changed period of the model there would be any exterior factor influenced to land use
change in the future. The prediction of model base on difference data by comparison
of 10-year database (land use data in 1990 and 2000) and 5-year database (land use
data in 2000-2005) for prediction land use change in 2010 of the CA_Markov Model.
Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Technology of Environmental Management) / 39
Table 4-4 Land use changes of Mae Taeng Watershed between 2000 and 2005 based on
cross-tabulation analysis
LAND USE 2005
Cla
ss1
Cla
ss2
Cla
ss3
Cla
ss4
Cla
ss5
Cla
ss6
Cla
ss7
Cla
ss8
Cla
ss9
Tot
al
area
Class1 1,119.74 0.00 13.35 5.53 66.47 1.24 1.06 0.00 51.70 1,259.09 Class2 0.93 114.38 0.00 0.43 6.33 1.29 0.22 0.00 4.92 128.50 Class3 0.21 0.00 37.51 0.00 4.34 0.02 0.17 0.00 3.96 46.21 Class4 0.07 0.00 0.00 32.41 3.10 0.45 1.90 0.00 0.42 38.35 Class5 12.92 0.10 6.19 7.10 191.17 1.71 1.66 0.00 7.37 228.22 Class6 0.40 0.00 2.42 6.00 9.34 38.17 1.31 0.27 1.73 59.64 Class7 0.59 0.00 0.00 4.27 2.95 1.12 16.47 0.00 0.11 25.51 Class8 0.00 0.00 0.04 0.00 0.42 0.11 0.00 0.84 0.00 1.41
LA
ND
USE
200
0
Class9
47.47 8.06 12.81 0.51 26.90 1.30 0.11 0.00 68.53 165.69 Total area 1,182.33 122.54 72.32 56.25 311.02 45.41 22.90 1.11 138.74 1,952.62 Total area
change -76.76 -5.96 26.11 17.90 82.80 -14.23 -2.61 -0.30 -26.95 253.62
Source: Data analysis
Remark: 1. Area unit is square kilometer
2. Positive change = increasing aspect
Negative change = decreasing aspect
3. Row are classes from 2000 image
Column are classes from 2005 image
4. Class 1 Evergreen forest
Class 2 Deciduous forest
Class 3 Forest plantation
Class 4 Paddy field
Class 5 Field crop
Class 6 Perennial and orchard
Class 7 Urban and built up land
Class 8 Water body
Class 9 Disturbed forest
Surang Rattanapan Results / 40
Figure 4-5 Land use changes of Mae Taeng Watershed between 2000 and 2005
Source: Analysis
Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Technology of Environmental Management) / 41
Legend
When
Class 1 Evergreen forest
Class 2 Deciduous forest
Class 3 Forest plantation
Class 4 Paddy field
Class 5 Field crop
Class 6 Perennial and orchard
Class 7 Urban and built up area
Class 8 Water body
Class 9 Disturbed forest
Figure 4-5 (Cont.) Legend of land use changes of Mae Taeng Watershed between
2000 and 2005
Surang Rattanapan Results / 42 4.3 Prediction of Land Use Change
4.3.1 Prediction using Markov Chain Model
4.3.1.2 The predicted using Markov Chain Model based on
land use data in 1990 and 2000
The land use data in 1990 and 2000 were manipulated by
Markov Chain Model in order to identify the probability of changing and transition
area as shown in Table 4-5 and Table 4-6.
Table 4-5 Probability of changing between 1990 and 2000 based on Markov Chain
Analysis
LAND USE 2005
Cla
ss1
Cla
ss2
Cla
ss3
Cla
ss4
Cla
ss5
Cla
ss6
Cla
ss7
Cla
ss8
Cla
ss 9
Class 1 0.7326 0.0055 0.0206 0.0030 0.1143 0.0000 0.0000 0.0001 0.1238
Class 2 0.0456 0.7403 0.0000 0.0030 0.0204 0.0236 0.0000 0.0012 0.1658
Class 3 0.0158 0.0000 0.7726 0.0000 0.1391 0.0294 0.0000 0.0431 0.0000
Class 4 0.1147 0.0100 0.0000 0.5392 0.1507 0.0975 0.0878 0.0000 0.0000
Class 5 0.1768 0.0001 0.0234 0.0155 0.4303 0.2465 0.0250 0.0017 0.0806
Class 6 0.0000 0.0571 0.0000 0.0578 0.1653 0.5917 0.1216 0.0000 0.0065
Class 7 0.0000 0.0000 0.0222 0.1577 0.0000 0.0922 0.7279 0.0000 0.0000
Class 8 0.1653 0.0685 0.0000 0.0000 0.2144 0.0000 0.0133 0.5385 0.0000
LA
ND
USE
200
0
Class 9
0.3255 0.0102 0.0316 0.0162 0.3209 0.0089 0.0058 0.0000 0.2809
Source: Markov Chain Analysis
Remark: 1. Row are classes from 2000 image
Column are classes from 2005 image
2. Class 1 Evergreen forest Class 6 Perennial and orchard
Class 2 Deciduous forest Class 7 Urban and built up land
Class 3 Forest plantation Class 8 Water body
Class 4 Paddy field Class 9 Disturbed forest
Class 5 Field crop
Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Technology of Environmental Management) / 43
Table 4-6 Transition area between 1990 and 2000 based on Markov Chain Analysis
LAND USE 2005
Cla
ss1
Cla
ss2
Cla
ss3
Cla
ss4
Cla
ss5
Cla
ss6
Cla
ss7
Cla
ss8
Cla
ss 9
Class 1 1475785 11039 41530 6087 230306 0 0 302 249480
Class 2 9375 152207 0 622 4199 4861 0 243 34091
Class 3 1168 0 57118 0 10281 2175 0 3187 0
Class 4 7038 614 0 33080 9245 5981 5387 0 0
Class 5 64566 42 8555 5664 157135 90019 9147 618 29430
Class 6 0 5447 0 5515 15772 56462 11607 0 616
Class 7 0 0 905 6436 0 3764 29701 0 0
Class 8 371 154 0 0 482 0 30 1210 0
LA
ND
USE
200
0
Class 9
86297 2693 8380 4304 85064 2362 1531 0 74476
Source: Markov Chain Analysis
Remark: 1. Row are classes from 2000 image
Column are classes from 2005 image
2. Data analysis based on raster format
3. Class 1 Evergreen forest
Class 2 Deciduous forest
Class 3 Forest plantation
Class 4 Paddy field
Class 5 Field crop
Class 6 Perennial and orchard
Class 7 Urban and built up land
Class 8 Water body
Class 9 Disturbed forest
Surang Rattanapan Results / 44 4.3.1.2 The predicted using Markov Chain Model based on land use data in 2000 and 2005
The land use data in 2000 and 2005 were manipulated by
Markov Chain Model in order to identify the probability of changing and transition
area as shown in Table 4-7 and Table 4-8.
Table 4-7 Probability of changing between 2000 and 2005 based on Markov Chain
Analysis
LAND USE 2010
Cla
ss1
Cla
ss2
Cla
ss3
Cla
ss4
Cla
ss5
Cla
ss6
Cla
ss7
Cla
ss8
Cla
ss 9
Class 1 0.7559 0.0000 0.0234 0.0097 0.1164 0.0022 0.0018 0.0000 0.0906
Class 2 0.0162 0.7566 0.0000 0.0074 0.1091 0.0222 0.0037 0.0000 0.0848
Class 3 0.0074 0.0000 0.6900 0.0000 0.1546 0.0007 0.0060 0.0000 0.1413
Class 4 0.0034 0.0000 0.0000 0.7185 0.1469 0.0213 0.0903 0.0000 0.0197
Class 5 0.1004 0.0010 0.0481 0.0551 0.7120 0.0133 0.0129 0.0000 0.0573
Class 6 0.0085 0.0000 0.0513 0.1275 0.1983 0.5440 0.0279 0.0058 0.0367
Class 7 0.0294 0.0000 0.0000 0.2130 0.1472 0.0559 0.5489 0.0000 0.0055
Class 8 0.0000 0.0000 0.0316 0.0000 0.3667 0.0941 0.0000 0.5077 0.0000
LA
ND
USE
200
5
Class 9
0.3168 0.0538 0.0855 0.0034 0.1795 0.0087 0.0007 0.0000 0.3516
Source: Markov Chain Analysis
Remark: 1. Row are classes from 2005 image
Column are classes from 2010 image
2. Class 1 Evergreen forest
Class 2 Deciduous forest
Class 3 Forest plantation
Class 4 Paddy field
Class 5 Field crop
Class 6 Perennial and orchard
Class 7 Urban and built up land
Class 8 Water body
Class 9 Disturbed forest
Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Technology of Environmental Management) / 45
Table 4-8 Transition area between 2000 and 2005 based on Markov Chain
Analysis
LAND USE 2010
C
lass
1
Cla
ss2
Cla
ss3
Cla
ss4
Cla
ss5
Cla
ss6
Cla
ss7
Cla
ss8
Cla
ss 9
Class 1 1430002 12 44230 18336 220241 4100 3498 0 171297
Class 2 3172 148386 0 1450 21389 4364 731 0 16628
Class 3 853 0 79832 0 17883 85 691 0 16347
Class 4 302 0 0 64655 13216 1919 8126 3 1772
Class 5 49960 493 23921 27438 354289 6599 6410 0 28504
Class 6 616 0 3729 9261 14405 39515 2024 423 2664
Class 7 1078 0 0 7801 5393 2049 20107 0 201
Class 8 0 0 56 0 653 168 0 905 0
LA
ND
USE
200
5
Class 9
70316 11943 18975 759 39855 1922 164 0 78040
Source: Markov Chain Analysis
Remark: 1. Row are classes from 2005 image
Column are classes from 2010 image
2. Data analysis based on raster format
3. Class 1 Evergreen forest
Class 2 Deciduous forest
Class 3 Forest plantation
Class 4 Paddy field
Class 5 Field crop
Class 6 Perennial and orchard
Class 7 Urban and built up land
Class 8 Water body
Class 9 Disturbed forest
Surang Rattanapan Results / 46
4.3.2 Prediction using Cellular Automata Model
The probability and transition values of change from 4.3.1 by Markov
manipulation were then utilized by 5×5 cellular matrix analysis. According to this
matter, each pixel could be identified for their own class. Thus, the prediction land use
map in 2005 and 2010 was then be classified.
4.3.2.1 The predicted land use map in 2005 based on land
use data in 1990 and 2000
It was found that the land use pattern in 2005 based on land
use data in 1990 and 2000 were mainly classified as evergreen forest with the area of
1,047.73 square kilometers or 53.66 %. Meanwhile the other were included field crop,
disturbed forest, deciduous forest, perennial and orchard, forest plantation, paddy
field, urban and built up land, and water body with the area of 321.22, 243.73, 106.67,
102.75, 54.91, 37.41, 37.41, 35.08 and 3.12 square kilometers, respectively as shown
in Table 4-9, Figure 4-6.
Table 4-9 Prediction land use pattern of Mae Taeng Watershed in 2005 based on land
use data in 1990 and 2000
Land use pattern Area Square Kilometers % of total area
Evergreen forest 1,047.73 53.66 Deciduous forest 106.67 5.46 Forest plantation 54.91 2.81 Paddy field 37.41 1.92 Field crop 321.22 16.45 Perennial and orchard 102.75 5.26 Urban and built up land 35.08 1.80 Water body 3.12 0.16 Disturbed forest 243.73 12.48 Total area 1,952.62 100.00 Source: Calculated
Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Technology of Environmental Management) / 47
Figure 4-6 Prediction land use pattern of Mae Taeng Watershed in 2005 based on land
use data in 1990 and 2000
Source: CA-Markov model
Surang Rattanapan Results / 48
When compared the predicted land use map and ground
truthing map, it was found that the predicted area lower than ground truthing area were
included evergreen forest, paddy field, forest plantation and deciduous forest with the
area of 134.6, 18.84, 17.43 and 15.90 square kilometers, respectively. Meanwhile, the
predicted area higher than ground truthing area were included disturbed forest,
perennial and orchard, urban and built up land, field crop and water body with the
area of 104.96, 57.35, 12.18, 10.28 and 2.00 square kilometers, respectively as shown
in Table 4-10.
Table 4-10 Comparison between land use map (ground truth) and prediction land use
map (CA_Markov) in 2005
Area Square Kilometers Land use pattern 2005
(ground truthing) 2005
(CA_Markov) Different area
Evergreen forest 1,182.33 1,047.73 -134.60 Deciduous forest 122.57 106.67 -15.90 Forest plantation 72.34 54.91 -17.43 Paddy field 56.25 37.41 -18.84 Field crop 310.94 321.22 10.28 Perennial and orchard 45.4 102.75 57.35 Urban and built up land 22.9 35.08 12.18 Water body 1.12 3.12 2.00 Disturbed forest 138.77 243.73 104.96 Total area
1,952.62 1,952.62
373.54 Source: Calculated
Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Technology of Environmental Management) / 49
4.3.2.2 The predicted land use map in 2010 based on land use data
in 1990 and 2000
It was found that the land use pattern in 2010 based on land
use data in 1990 and 2000 were mainly classified as evergreen forest with the area of
988.99 square kilometers or 50.65%. Meanwhile the other were included field crop,
disturbed forest, perennial and orchard, deciduous forest, forest plantation, urban and
built up land, paddy field and water body with the area of 331.44, 216.89, 125.83,
105.72, 89.79, 46.74, 43.88 and 3.34 square kilometers, respectively as shown in
Table 4-11, Figure 4-7.
Table 4-11 Prediction land use pattern of Mae Taeng Watershed in 2010 based on
land use data in 1990 and 2000
Land use pattern Area Square Kilometers % of total area Evergreen forest 988.99 50.65 Deciduous forest 105.72 5.41 Forest plantation 89.79 4.60 Paddy field 43.88 2.25 Field crop 331.44 16.97 Perennial and orchard 125.83 6.44 Urban and built up land 46.74 2.39 Water body 3.34 0.17 Disturbed forest 216.89 11.11 Total area
1,952.62 100.00 Source: Calculated
Surang Rattanapan Results / 50
Figure 4-7 Prediction land use pattern of Mae Taeng Watershed in 2010 based on land
use data in 1990 and 2000
Source: CA-Markov model
Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Technology of Environmental Management) / 51
4.3.2.3 The predicted land use map in 2010 based on land use data
in 2000 and 2005
To check the efficiency and limitation of changed period of the
model there would be any exterior factor influenced to land use change in 2010 of the
CA_Markov Model. The comparison of 10-year database (land use data in 1990 and
2000) and 5-year database (land use data in 2000 and 2005).
It was found that the land use pattern in 2010 base on land use
data in 2000 and 2005 were mainly classified as evergreen forest with the area of
990.86 square kilometers or 50.75%. Meanwhile the other were included field crop,
disturbed forest, deciduous forest, forest plantation , paddy field , perennial and
orchard, urban and built up land and water body with the area of 429.75, 195.90,
101.20, 96.02, 79.03, 36.17, 23.04 and 0.65 square kilometers, respectively as shown
in Table 4-12, Figure 4-8.
Table 4-12 Prediction land use pattern of Mae Taeng Watershed in 2010 based on
land use data in 2000 and 2005
Land use pattern Area Square Kilometers % of total area Evergreen forest 990.86 50.75 Deciduous forest 101.20 5.18 Forest plantation 96.02 4.92 Paddy field 79.03 4.05 Field crop 429.75 22.01 Perennial and orchard 36.17 1.85 Urban and built up land 23.04 1.18 Water body 0.65 0.03 Disturbed forest 195.90 10.03 Total area
1,952.62 100.00 Source: Calculated
Surang Rattanapan Results / 52
Figure 4-8 Prediction land use pattern of Mae Taeng Watershed in 2010 based on land
use data in 2000 and 2005
Source: CA-Markov model
Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Technology of Environmental Management) / 53
When compared the predicted land use map in 2010 based on
land use data in 1990 and 2000 (interval 10 years) and the predicted land use map in
2010 based on land use data in 2000 and 2005 (interval 5 years), it was found that the
predicted area interval 5 years lower than the predicted area interval 10 years were
perennial and orchard, urban and built up land, disturbed forest, deciduous forest and
water body with the area of 89.66, 23.7, 20.99, 4.52, 2.69 square kilometers,
respectively. Meanwhile, the predicted area interval 5 years higher than the predicted
area interval 10 years were field crop, paddy field, forest plantation and evergreen
forest with the area of 98.31, 35.15, 6.23, 1.87 square kilometers, respectively as
shown in Table 4-13.
Table 4-13 Comparison between the predicted land use map in 2010 based on land use data
in 1990 ,2000 (interval 10 years) and the predicted land use map in 2010 based
on land use data in 2000 ,2005 (interval 5 years)
Area Square Kilometers Predicted land use map in 2010
Land use pattern Based on land use data in 1990, 2000
(interval 10 years)
Based on land use data in 2000, 2005
(interval 5years)
Different area
Evergreen forest 988.99 990.86 1.87 Deciduous forest 105.72 101.20 -4.52 Forest plantation 89.79 96.02 6.23 Paddy field 43.88 79.03 35.15 Field crop 331.44 429.75 98.31 Perennial and orchard 125.83 36.17 -89.66 Urban and built up land 46.74 23.04 -23.7 Water body 3.34 0.65 -2.69 Disturbed forest 216.89 195.90 -20.99 Total area
1,952.62 1,952.62
283.12 Source: Calculated
Surang Rattanapan Results / 54 4.4 Accuracy Assessment of Model
The accuracy of prediction in 2005 was analyzed by comparing with the land
use map in 2005 classified by satellite interpretation and ground truthing. It was found
that the prediction land use in 2005 of Mae Taeng Watershed using CA_Markov
Model was shown the overall accuracy of 71.09 % and Kappa Index of 0.52 as shown
in Figure 4-9.
The accuracy of prediction land use map in 2010 based on land use data in
1990 and 2000 (interval 10 years) was analyzed by comparing with prediction land use
map in 2010 prediction land use map in 2010 based on land use data in 2000 and 2005
(interval 5 years). It was found that the prediction land use in 2010 of Mae Taeng
Watershed using CA_Markov Model was shown the overall accuracy of 68.41 % and
Kappa Index of 0.54 as shown in Figure 4-10.
To check the efficiency and limitation of changed period of the model there
would be any exterior factor influenced to land use change in 2010 of the CA_Markov
Model. The comparison of 10-year database (land use data in 1990 and 2000) and 5-
year database (land use data in 2000-2005), it was found that the land use pattern in
2010 based on difference database of 5-year and 10-year were 71.09 and 68.41 of
overall accuracy. The Kappa index values were 0.52 and 0.54 respectively. These can
be agreed even using different database. It can be concluded that the CA_Markov
Model can be applied in Mae Taeng Watershed for land use planning. It can be also
applied with economical model, natural disaster model, socio-economic and
government policy.
Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Technology of Environmental Management) / 55
(B)
(A)
Figu
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ompo
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bet
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nd u
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ap in
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hich
inte
rpre
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from
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dsat
imag
e(A
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pre
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ion
land
use
in 2
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(B)
Surang Rattanapan Results / 56
(B)
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Figu
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Com
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pred
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Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Technology of Environmental Management) / 57
4.5 Trend of Land Use Changes based on Socio-Economic and Policy Aspect
Using the in-depth interview with the specific sampling method for
qualitative study. The answerers were included Suchin Ngarmniyom (member of
committee of the federation of northern agriculturalist (network of the northern people
organization)), Boonyeun Wongfhan (deputy of the group of people utilizing water
from Mae Taeng Watershed in agricultural part) and Singhachai Thamphing (member
of committee of the federation of northern agriculturalist (network of the northern
people organization)).
The interviews of the key informant shown the land use pattern of Mae Taeng
Watershed, problem in the area, factors influence to land use change and trend of land
use in the future that can be concluded as shown below.
1. Land Use Pattern in Mae Taeng Watershed
In the past, most of land use in Mae Taeng Watershed was natural forest and
continuously decrease. As the area was quite abundance, there was invaded for
agriculture especially crop field. Because of the crop field, the soil of the area became
acid condition and low of phosphorus. Since the decreasing of the product, it had to
use more fertilizers and chemicals. The higher of production cost made the farmer had
more agricultural debt. There was still drift cultivation in some steep slope of the area
two times a year.
The land use pattern in Mae Taeng Watershed was related to slope of the area
and the folkway of each tribe. The cultivation in plain area was permanent with dike
and canal around the area. Most of the people on the plain were Thai, Thai-Yai and
Karen. The vegetations of the area were rice, corn, soy, green bean, garlic and chilli.
For the steep slope area, there was drift cultivation rely on only rain water. The
vegetations of the area were wheat, corn and cabbage. Perennial plantations were less
because of water shortage. Most of perennials were on the plain area of the lower of
Mae Taeng Watershed. The vegetations of the area were plum, tea tree, Chinese pear,
coffee, lychee and mango.
Surang Rattanapan Results / 58 2. Problem in the area
There was expanding of communities in every area of Mae Taeng Watershed.
The expanding of community went on the original. For the new settlement, there were
5-10 of households settled in the new invaded area. This was the few because of the
control of forestry officer. The officer will press the invader to go back to the old
community. The invaded area was damaged and fragile, so it needed time for
recovery. The area had chance to be invaded again. Some of invaders claimed that the
area were their own land before. The problem will be prolonged so the invasion
obviously covered. The invasion was close to road and infrastructure then people in
the area needed more income to support their life with facilities. The increasing of
invasion area had trend to link together by roads.
The increasing of expanding around the old cultivated area into highland had
occurred because the villager received information that the government will assign
office of the land to the owner of land before the cadastral surveying. So the
agriculturist continuously invaded to mark the land. There was also opium poppy
plantation mixed with field crop on highland. Even there were strict investigation and
suppression but with the high income.
3. The effective factor to trend change in the future.
There are several of races in Mae Taeng Watershed including Thai people
and Thai people of upper land which are Karen, Lee Sor, Mou Ser, Mong and Jean
How. The residents of the tribes are settled in the upper area of Mae Taeng Watershed.
The area is highland and located in conservative forest area. There are trends of
residential expanding. Most of people in the area earn a living in agriculture especially
in field crop such as rice farming, corn, bean, red bean and garlic. There are also
orchards such as mango, tea, coffee and plum in steep slope area. Most of the invasion
is because of expanding in the area to be cultivation area. There is no adjusting in the
area. The cultivations are only in wet season and the area was ignored in dry season.
There is burning of weed without fire control before the cultivated season, so the fire
invaded the forest area. This makes continuously increasing of invaded area. A lot of
small invaded areas has been linked together then become a larger area. This shows the
expanding of the communities in the future. In the plain area, the location of Thai
Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Technology of Environmental Management) / 59
people, there is expanding of rice farming area. Most of the area is closed to road. The
large-size community with infrastructure development made a convenience in
invasion. The forest area had trend to be surrounded by agriculture area and may
completely cut off from the larger area.
Surang Rattanapan Conclusion and Recommendation / 60
CHAPTER V
CONCLUSION AND RECOMMENDATION
5.1 Conclusion
The study involves using remote sensing technique integrated with Markov
Chain and Cellular Automata Model to identify land use pattern and prediction model
for land use change of Mae Taeng Watershed, Chiang Mai Province.
Satellite image, path 131 row 047 and path 131 row 046, was use to represent
the area studied. The study was started by image processing that the satellite image
was image import, preprocessing, image enhancement, image classification, and image
post analysis to classify image. The result of the study was summarized as follows.
1. Mae Taeng Watershed, Chiang Mai Province covering an area of 1,952.62
square kilometers, can be classified into nine land use categories including evergreen
forest, deciduous forest, forest plantation, paddy field, field crop, perennial and
orchard, urban and built up land, water body and disturbed forest.
2. Land use change of Mae Taeng Watershed using cross-tabulation analysis
to compared pattern of land use in 1990 to 2000. It was found that, the area of field
crop, perennial and orchard, disturbed forest, urban and built up land and water body
are increased. Meanwhile, evergreen forest, forest plantation, deciduous forest and
paddy field are decreased.
3. Land use change of Mae Taeng Watershed using cross-tabulation analysis
to compared pattern of land use in 2000 to 2005. It was found that, the area of field
crop, forest plantation and paddy field are increased. Meanwhile, forest, disturbed
forest, perennial and orchard, deciduous forest, urban and built up land and water body
are decreased.
Fac. of Grad. Studies. Mahidol Univ. M.Sc. (Technology of Environmental Management) / 61
4. The predicted land use map in 2010 base on land use data in 1990 and
2000. It was found that the pattern of land use in 2010 were mainly classified as
evergreen forest with the area of 988.99 square kilometers or 50.65% meanwhile the
other were included field crop, disturbed forest, perennial and orchard, deciduous
forest, forest plantation, urban and built up land, paddy field and water body with the
area of 216.89, 125.83, 105.72, 89.79, 46.74, 43.88 and 3.34 square kilometers,
respectively.
5. The predicted land use map in 2010 base on land use data in 2000 and
2005. It was found that the pattern of land use in 2010 were mainly classified as
evergreen forest with the area of 990.86 square kilometers or 50.75% meanwhile the
other were included field crop, disturbed forest, deciduous forest, forest plantation,
paddy field, perennial and orchard, urban and built up land and water body with the
area of 429.75, 195.90, 101.20, 96.02, 79.03, 36.17, 23.04 and 0.65 square kilometers,
respectively.
6. The result from the prediction was compare to the classified by satellite
interpretation of 2005 by using pairwise comparison. The Overall accuracy of 71.09 %
and Overall Kappa of 0.52. Meanwhile the result from the land use map in 2010 based
on land use data in 1990 and 2000 (interval 10 years) and prediction land use map in
2010 based on land use data in 2000 and 2005 (interval 5 years). by using pairwise
comparison. The Overall accuracy of 68.41% and Overall Kappa of 0.54.
5.2 Recommendation
The land use patterns in Mae Taeng Watershed consisted of various land use
types. The training area should be represented most of type which occurred in the area.
Thus, the interpretation would be accepted of better results.
Satellite image of Landsat-5(TM) more than 25 meter for instances,
IKONOSE, Quick Bird or aerial photograph should be used to increase accuracy and
better classification
Surang Rattanapan Conclusion and Recommendation / 62
Beside physical factor has influence to land use change. Another factor such
as policy of government, natural disasters, socio-economic, etc. There would be any
exterior factor influenced to land use change. Thus, its have limitation of changed
period of the model in the future. So the land use has been continuously of exchange
all time. Thus, there was a limit of the prediction of the trend of land use change in
2010 based on the data in 1990 and 2000 using CA_Markov Model. As the model
calculated data in 1990 and 2000. They are normally based on statistic approach.
There may be any change of land use during 2000 and 2005 that the model cannot
recognize. Thus, the overall accuracy of model in 2010 by comparison of 10-year
database (land use data in 1990 and 2000) and 5-year database (land use data in 2000-
2005). So can be used correct database to support land use planning.
The prediction by Markov Chain and Cellular Automata model will be more
accurate. If increased other model in the analysis such as model of socio-economic,
disaster and government policy, etc.
Fac. of Grad. Studies, Mahidol Univ. M.Sc. (Technology of Environmental Management) / 63
REFERENCES
1. Veldkamp A., P.H. Verburg. Modeling land use change and environmental impact. Journal of environmental Management 72(2004) 1-3; 2004.
Available from:http://www.cptec.inpe.br/~summersc/ Apresentacao TV
eldkamp/ Veldkamp LAND USE CHANGE1.pdf [Accessed 2005 Jun 23].
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Surang Rattanapan Appendix / 66
APPENDIX
Fac. of Grad. Studies, Mahidol Univ M.Sc.(Technology of Environmental Management) /
67
APPENDIX A
THE ACCURACY OF PREDICTION IN 2005
Table A-1 Error matrix of prediction model in 2005
Land use pattern in 2005 (Landsat image)
Cla
ss 1
Cla
ss 2
Cla
ss 3
Cla
ss 4
Cla
ss 5
Cla
ss 6
Cla
ss 7
Cla
ss 8
Cla
ss 9
Row
tota
l User’s Accuracy
(%)
Class1 1511806 358 14013 8073 64554 0.10 1454 1504 97 1601859.10 94.38
Class2 1303 151680 0 626 7454 0.11 2105 309 38 163515.11 92.76
Class3 8401 0 60602 0 8729 0.31 77 996 0 78805.31 76.90
Class4 26 709 0 49008 3670 0.18 817 3399 1 57630.18 85.04
Class5 154751 6076 15389 12369 284590 0.44 2072 931 13 476191.44 59.76
Class6 5008 686 7351 10425 76205 0.65 58656 1442 439 160212.65 0.00
Class7 1106 0 12 8946 12252 0.51 5511 27821 0 55648.51 9.90
Class8 2 0 2657 0 1028 0.77 173 2 1194 5056.77 0.04
Pred
ictio
n La
nd u
se in
200
5
Class9 209314 36610 15667 545 39133 0.77 1772 225 0 303266.77 0.00
Column total 1891717 196119 115691 89992 497615 3.84 72637 36629 1782 2902185.84
Column total Producer’s
Accuracy %) 79.92 77.34 52.38 54.46 57.19 16.93 7.59 0.01 0.00
Source : Calculated
Remark: 1. Data analysis based on raster format
3. Class 1 Evergreen forest Class 6 Perennial and orchard
Class 2 Deciduous forest Class 7 Urban and built up land
Class 3 Forest plantation Class 8 Water body
Class 4 Paddy field Class 9 Disturbed forest
Class 5 Field crop
Surang Rattanapan Appendix / 68
Overall Accuracy =
= [1511806+151680+60602+49008+284590 +0.65+5511+2] 2902185.84 = 71.09%
Overall Kappa =
= N X - Y
N²-Y
= [(2902185.84×2063200)- 3318364236476.08]
[(2902185.84)²- 3318364236476.08]
= 0.52
When
N = 2902185.84
X = 1511806+151680+60602+49008+284590+0.65+5511+2
= 2063200
Y = (1601859.10×1891717)+(163515.11×196119)+
(78805.31×115691)+(57630.18×89992)+
(476191.44×497615)+(160212.65×3.84)+
(55648.51×72637)+(5056.77×36629) +(303266.77×1782)
= 3318364236476.08
n
nk
iii∑
=1
∑
∑ ∑
=++
= =++
⋅−
⋅−
k
iii
k
i
k
iiiii
nnN
nnnN
1
2
1 1
)(
)(
Fac. of Grad. Studies, Mahidol Univ M.Sc.(Technology of Environmental Management) /
69
APPENDIX B
THE ACCURACY OF PREDICTION IN 2010
Table B-1 Error matrix of prediction model in 2010
Prediction land use base on land use 1990 and 2000
Cla
ss 1
Cla
ss 2
Cla
ss 3
Cla
ss 4
Cla
ss 5
Cla
ss 6
Cla
ss 7
Cla
ss 8
Cla
ss 9
Row
tota
l User’s Accuracy
(%)
Class1 1311183 1612 34330 93 71364 14772 3522 8 145793 1582677 82.85 Class2 545 133698 0 925 2091 195 0 0 24338 161792 82.64 Class3 22098 301 76499 25 17708 15451 586 2989 18707 154364 49.56 Class4 13818 1307 68 57959 18695 20417 14054 31 288 126637 45.77 Class5 102174 17204 15555 4048 383973 92309 21251 1507 49378 687399 55.86 Class6 819 5429 40 215 636 46171 4502 192 191 58195 79.34 Class7 1150 353 1146 3174 351 1399 29602 58 14 37247 79.47 Class8 52 8 4 0 0 303 12 692 0 1071 64.61
Pred
ictio
n la
nd u
se b
ase
on la
nd u
se
1990
and
200
0
Class9 130805 9131 16702 3696 35294 10943 1880 226 106962 315639 33.89 Column total 1582663 169043 148675 70135 530112 201960 82769 6736 345676 3137769
Column total Producer’s
Accuracy %) 82.85 79.09 51.45 82.64 72.43 22.86 35.76 10.27 30.94
Source : Calculated
Remark: 1. Data analysis based on raster format
3. Class 1 Evergreen forest Class 6 Perennial and orchard
Class 2 Deciduous forest Class 7 Urban and built up land
Class 3 Forest plantation Class 8 Water body
Class 4 Paddy field Class 9 Disturbed forest
Class 5 Field crop
Surang Rattanapan Appendix / 70
Overall Accuracy =
= [1311183+133698+76499+57959+383973+46171+ 29602+ 692 + 106962] 3137769 = 68.41%
Overall Kappa =
= N X - Y
N²-Y
= [(3137769×2146739)- 3052376346653.00]
[(3137769)²- 3052376346653.00]
= 0.54
When
N = 3137769
X = [1311183+133698+76499+57959+383973+46171+ 29602+692 + 106962]
= 2146739
Y = (1582677×1582663)+( 161792×169043)+
(154364×148675)+( 126637×70135)+
(687399×530112)+( 58195×201960)+
(37247×82769)+( 1071×6736) +(315639×345676)
= 3052376346653.00
n
nk
iii∑
=1
∑
∑ ∑
=++
= =++
⋅−
⋅−
k
iii
k
i
k
iiiii
nnN
nnnN
1
2
1 1
)(
)(
Fac. of Grad. Studies, Mahidol Univ M.Sc.(Technology of Environmental Management) /
71 Overall Accuracy =
Procedure’s Accuracy =
User’s Accuracy =
Overall Kappa =
When N = Total number of observations in error matrix,
k = Total of rows, columns in error matrix,
nii = The number of observations in row i column i
ni+ = Total of observations in row i (right of matrix),
n+i = Total of observations in column i (bottom of the matrix)
n
nk
iii∑
=1
j
jj
nn
+
i
ii
nn
∑
∑ ∑
=++
= =++
⋅−
⋅−
k
iii
k
i
k
iiiii
nnN
nnnN
1
2
1 1
)(
)(
Surang Rattanapan Biography / 72
BIOGRAPHY
NAME Miss Surang Rattanapan
DATE OF BIRTH 9th December 1981
PLACE OF BIRTH Nakornsritammarat, Thailand
INSTITUTIONS ATTENDED Kasetsart University, 2001-2004
Bachelor of Science
(Forestry)
Mahidol University, 2004-2006
Master of Science
(Technology of Environmental
Management)
HOME ADDRESS 126 Moo 10, Tamyai Sub-district,
Thongsong District,
Nakornsritammarat Thailand
80110
Tel. +66 86703 6435
Tel. +66 29681 157
E-mail: [email protected]