CORNELL
CSS 260 -
Land Degradation and Soil Erosion
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Land Degradation and Soil ErosionDegraded Land – resulting in reduced productivity~ 5 billion ha (@ 43% of Earth’s vegetated surface)~ @ 1/3 due to overgrazing~ 3.6 billion ha associated with desertification~ a major cause is overgrazing~ 0.5 billion ha due to tree felling in humid tropicsSoil degradation is greatly responsible for @ 2 billion ha of the 5 billion ha@ 85% of this is due to wind & water erosionSoil ErosionProcess 1. Rain drop detachment2. Transport (overland flow or runoff)3.
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