Brad BarberProject Manager for SCFATexas Forest Service

Brad BarberProject Manager for SCFATexas Forest Service

Forest Resource Richness

Forest Resource Threat

Critical Private Forestland

ForestlandForest patchesRiparian areasWetlandsPriority watersheds

Public water supplyProximity to public landT&E SpeciesSlope

Development levelForest health (Insects and diseases)Wildfire risk

All 13 of above input layers

Site productivity†

† Layer added for Southern Region

Compendium of maps

Analysis methodology, results, maps, and explanation of significance of private forestland in the South

Summary report

GIS Model

Highlight state-specific issues affecting critical private forestland and its management

Regional and state maps of the three output layers

National Land Cover Database 1992 2001Cover Classes 41, 42, 43, 91

Cover Classes 41, 42, 43, 52, 90

Layer values: 0, 1

Use data from Forestland layerOverlay state maintained roads

Layer values: 0, 1

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0

<100

100-200

200-300

300-400

400-500

500-600

600-700

700-800

800-900

900-1000

>1000

Layer Value

Layer Values by Patch Size

Pat

ch

Siz

e (a

cres

)

USGS National Hydrography DatasetBuffer streams by 25 meters x stream order

Layer values: 0, 1

Forested wetlandsNational Wetlands Inventory (US Fish and Wildlife)

National Land Cover Database (2001 & 1992)

Preferred source

Fill gaps in NWS data

Layer values: 0, 1

U.S. Environmental Protection Agency (EPA) data on Impaired Waters within 12-digit, Hydrologic Unit Code (HUC) watersheds

Based on Clean Water Act Section 303(d) lists that show water quality standards impairment or threats to the attainment of beneficial uses or anti-degradation provisions

Layer values: 0, 1

Protected Areas Database (Conservation Biology Institute)

Layer values: <0.5 mile = 1; 0.5-1.0 mile = 0.5; >1 mile = 0

15-30% slope included

Layer values: 0, 1

Site ProductivitySSURGO—NRCS Soil Survey Geographic data

Preferred

STATSGO—NRCS State Soil Geographic data†

Fill in gaps in SSURGO

† STATSGO being updated and renamed to Digital General Soil Map of the United States

Layer Value

Layer Values for Site Productivity

Sit

e In

dex

at

50 y

ears

0.33 0.670.0 1.0

<60 ft

60-79

80-95

>95

U.S. Census Bureau data—1990 and 2000Layer will include those areas where the number of households increased by 1 to 8 per square kilometer between 1990 and 2000

Layer values: 0, 1

Insect and Diseases

Data from the forest health risk mapping effort by USDA Forest Service

Annosus Root DiseaseFusiform RustBeech Bark DiseaseSouthern Pine BeetleGypsy MothBalsam Wooly Adelgid

< 55-1515-25>25

Percent mortality of trees expected over next 15 years

= 0= 0.33= 0.67= 1

Southern Wildfire Risk Assessment

= 0= 0.11= 0.22= 0.33= 0.44= 0.55= 0.67= 0.78= 0.89= 1.0

Threatened & Endangered Species

Public Drinking Water Supply

Layer values: 0, 1

Include watersheds (12-digit HUC) in which surface water intake is present and 1-mile buffer surrounding ground water intakes

Layer values: 0, 1

0 1 2 3 4 5 6 7 8 9 10 11

Forestland

Priority watersheds

Riparian areas

Development level

Public drinking water supply

Wildfire risk

Site productivity

Wetlands

Forest patches

T&E Species

Proximity to public lands

Slope

Forest health

10.1%

9.4%

9.4%

9.0%

8.9%

8.8%

8.2%

7.8%

6.8%

6.6%

6.5%

5.5%

2.9%

Percent Contribution of Each Layer to Overall Composite Output Layer

Percent contribution of layers to model output(values sum to 100)

PR

Weighting done by EcoregionNLCD 2001 Mapping Zones

Forestland

10.1%

PriorityWatersheds

9.4%

PublicWater Supply

8.9%

Riparian Areas

9.4%

Development Level

9.0%

Forest Health

8.8%

Wildfire Risk

8.2%

Site Productivity

7.8%

Wetlands

6.8%

Forest Patches

6.6%

T&E Species

6.5%

Proximity toPublic Land

5.5%

Slope

2.9% Percentages sum to 100

Forestland(10.1%)Slope(2.9%)