Desertification Phenomena

Soil erosion is wide spread in upland areas of arid, semi-arid and dry sub-humid regions.

Current Issues: the clearing of land for agricultural purposes and the international demand for tropical timber are contributing to deforestation; soil erosion from overgrazing and poor cultivation methods (including slash-and-burn agriculture); desertification; loss of biodiversity; industrial pollution of water supplies used for drinking and irrigation

The transformation of arable or habitable land to desert, as by a change in climate or destructive land use.