Desertification

Case Study The Sahel- A narrow belt of semi arid land which lies south og the Sahara desert and extends across Africa 

Causes of desertification

1.Deforestation

2.War

3.Change in the rainfall patterns leading to drought

4.Overgrazing

5.Soil errosion

6.Overpopulation

7.Overfarming

Impacts of desertification

soil loses its vegetation cover,

contains less humus and holds less moisture s

oil errosion

damaged nutrient cycle

  death

famine

little vegetation

more evaporation

Managing desertification

Crop rotation 

Harvesting Branches

rather than cutting down the whole tree

Animal husbandry

Coppicing

  Terracing

Green belt

appropriate technology

notes

Heavy rainfall such as flash floods increases the amount of surface run off as…