A- Level Impacts of Desertification

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Submitted By MonaCSC
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Discuss the impact of desertification on land, ecosystems and people.
Desertification is ‘the diminution or destruction of the biological potential of the land which can lead ultimately to desert-like conditions’. Mainly as a result of climatic changes, changes in farming and population growth, desertification has had huge impacts on land, ecosystems and people.
Maps of NE of Africa to compare its dry, vegetated and saturated area between May 2007 and May 2011.
It shows a significant decrease in area covered by vegetation and expansion in arid area in Sudan and Ethiopia.
Climatic change (decrease in rainfall and increase in evapotranspiration rate) has led to the death of vegetation; change in farming and overgrazing has made it very difficult for vegetation to re-establish itself while other human activities e.g. overcultivation and deforestation has removed vegetation cover in the area. As a result, here is a reduction in the amount of vegetation in deserted area.

Because of population growth (as a result of high birth rate and/or immigration – refugee), there is a higher demand for woods for cooking, which leads to deforestation and an increase in the area of treeless zones. The decrease in forest cover in Haiti from 1990 through 2005 was about 10% and it is now estimated that the radius of the treeless zone around Khartorm, Sudan is 90km.
The reduction in vegetated and forest area leads to the reduction in biodiversity since it contributes to the destruction of the habitats of animal and vegetable species and micro-organism. Although it is extremely difficult to put an indicator on this loss, reducing the biodiversity, primarily, it affects the food and health of the local people who rely on a large number of different animal and vegetable species, secondly, it is also a loss to the whole of mankind as many genetic strains of cultivated plants which…...

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