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 594www.gi.sanu.ac.rss.babovic@gi.sanu.ac.rsd.strbac@gi.sanu.ac.rs

http://www.gi.sanu.ac.rs/mailto:s.babovic@gi.sanu.ac.rsmailto:d.strbac@gi.sanu.ac.rs

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