Sahel Flashcards
1
Q
How large is the Sahel?
A
5400km long
Covers 3 million km2
2
Q
How much rainfall does the Sahel have annually?
A
200-600mm
3
Q
Desertification definition?
A
Transformation of farmland to desert due to a changing climate or other other human pressures
4
Q
Drought definition?
A
A period of below average rainfall in a region leading to a lack of water
5
Q
Causes from physical factors
A
Rising temperature increases evaporation
Low rainfall means lack of water
Flash floods erodes soil
6
Q
Causes from human factors
A
Population growth
Deforestation
Over cultivation exhausts the soil
7
Q
Problems
A
Dust storms
Reduced crop yields
Famine
8
Q
Solutions
A
Crop rotation annually
Shelter belts
Reforestation
Irrigation (watering dry land)
