-
The optimal strategy of the local government in controlling
soil erosion
*Stefana Babović, PhD, research assistant *Dragoljub Štrbac, researcher/GIS designer
*Geografical Institute „Jovan Cvijić“ Serbian Academy of Sciences and Arts
-
Contents
• Starting assumptions• Soil erosion risk• How to resistnace to the soil erosion• Тhe structure of the agricultural population• General diagram of making decision • Measures of soil erosion control• Activities• Stationary or dynamic model
-
Starting assumptions
• Natural factors create more or less predisposition for different intensity of soil erosion
• Infrastructure and cultural objects – their vulnerability must necessarily be reduced (they must be defended)
• It remains, reducing the impact of erosion on the population and agriculture, to be optimaly managed
Natural factorsInfrastructure,Cultural and historical objects, etc.
Population andagriculture
-
Soil erosion risk
𝑅𝑅 =H × V𝑅𝑅𝑒𝑒
• R - Risk• H - Hazard• V – Vulnerability• Re - Resistance
-
How to resistnace to the soil erosion• Possible actions to reduce anthropogenic influence on soil
erosion:
– Reduce the intensities of the existing erosion (refers to the 1,2 and 3 category)
– Prevent an increase in the intensity of erosion (refers to the 4 and 5 category)
1 = excessive 2 = strong 3 = mean 4 = weak
5 = very weak
-
Тhe structure of the agricultural population
• Agriculture - the primary source of income
• Agriculture - secondary source of income
• Agriculture – hobby (no source of income)
-
General diagram of making decision
SoilTotalpopulation
Population byage
The way ofearning
income byfarmers
Natural potential for soil erosion
Agriculturalpopulation
Analysis of soilerosion
intensity
Categories of erosion
Soil renewal
Agriculture income
Cost analysis ofagriculture income
Soil erosion protection
Necessary soil erosion control works
Cost analysisof
implementation of measures
Costs of necessary measures for soil erosion
protection
Is the income oflocal community ofagriculture higher
than costs ofprotectionmeasures?
Yes
No
Subsidies of the wider social community
Resourceallocation
from the localcommunity
Measures costs
Statebudget
Planningactivities onrenewal of
endangeredareas
Renewal activities plan
Analysis ofareas
threatened byerosion
-
Measures of soil erosion control
• Education (to raise general awareness on erosion and population vulnerability)– natural factors, – anthropogenic factors, – physical and chemical soil characteristics
-
Measures of soil erosion control
• Anti-erosion works– Anti-erosion agro-technics– Land use changing (subsidies might be necessary)– Applying technical measures (in the river bed and in the basin)
(subsidies are necessary)
• Organized resettlement of the population(subsidies and organization by governmentare necessary)
-
Activities
Agriculture as incomeTypes of Activities
Education Measures of soil erosion control
Migration
Agriculture is primary Yes YesComplex processAgriculture is secondary Yes Yes
Agriculture is hobby Yes
Prioritized activities
-
From stationary to dynamic model
• The model can be considered in the present, as a stationary• It also could be dynamic if we do population projections. If
villages disappear then they are not primary for investment.
The movement of the total population of the Republic of Serbia (1961-2041) (census and variants of projections)
-
Geographical Institute „Jovan Cvijic“Serbian Academy of Sciences and Arts
Djure Jaksica 9, 11000 Belgrade, SerbiaPhone: +(381) 11 2636 [email protected]@gi.sanu.ac.rs
http://www.gi.sanu.ac.rs/mailto:[email protected]:[email protected]
The optimal strategy of the local government in controlling� soil erosion�ContentsStarting assumptionsSoil erosion riskHow to resistnace to the soil erosion Тhe structure of the agricultural populationGeneral diagram of making decision Measures of soil erosion controlMeasures of soil erosion controlActivitiesFrom stationary to dynamic modelSlide Number 12