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Agriculture- desertification

Agricultural opportunities

Traditional agriculture based around nomadism
Oases provide irrigation e.g. Douz, Tunisia are able to produce dates,
olives, figs which also provides trade opportunities
Exogenous rivers (permanent rivers with the source outside the arid area
e.g. the Nile) fertile banks- Nile Aswan Dam provides irrigation water all…

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In Africa, 36 countries are affected by desertification and 75% of
Africa's farmland is rapidly losing basic nutrients needed to grow crops.

3 types of land degradation

Soil erosion

Causes

Destruction of vegetation which prevents topsoil being removed by runoff
or wind
Overgrazing
Clearance of woodland for fire wood or…

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