EAS205 Chapter Notes - Chapter 9: Overdraft, Overgrazing, Desert Pavement

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A region with so litle vegetaion that only a limited populaion (human or animal) can be supported on that land: development of deserts: Typically located in one of two regions: laitudinal deserts: Heated air rises from the equator, and as it does so it cools and also experiences a drop in pressure, which leads to a drop in moisture capacity, and we see precipitaion (tropical rain forest) Air masses encounter mountain ranges, and are driven to higher alitudes, resuling in pressure and temperature drop, and moisture is released , and dry air masses results. These descend on the downwind or lee side of the mountain, and regain their moisture carrying capacity, and cause increased evaporaion: deseriicaion: The rapid conversion of producive land to desert, primarily due to land use pracices: overgrazing: leads to loss of vegetaion. Overdrat of water: less plant growth can be sustained, and the soil is more prone to erosion if dry.

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