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《Journal of Central South University of Forestry & Technology》 2015-03
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Analysis on factors in the formation of grassland desertification in Ruoergai plateau

WANG Xiao-fei;HE Ping;KANG Wen-xing;College of Life Science and Technology Central South University of Forestry and Technology;  
Based on previous studies and data collected during field investigation, analyze the causes of grassland desertification in Ruoergai plateau. The results showed that the geological changes, frequent river diversion, rock becoming high sediment concentration in soil, providing a great backdrop for the region's grassland desertification of Ruoergai; Dry and warm climate create the conditions for desertification of Ruoergai; Runoff caused the loss of topsoil, sand layer is exposed, wind-driven role, promoting the spread of sand flow occurs accumulated sand and dune formation and move to a series of desertification process development; Dewatering swamps, pastures expanded greatly accelerated the evolution of Ruoergai marsh wetlands → semi-swamp → meadow → grassland →desertification development;Overgrazing and irrational management,and use of ultra-limits is the cause of most of the grassland desertification; Ruoergai grassland desertification process is not a simple natural process, but a natural and economic, social association, and human-induced activities caused by factors desertification process, which is the natural and human factors work together by natural processes and anthropogenic acceleration feedback superimposed on each other and each other's results.
【Fund】: 国家科技支撑计划“西南生态安全屏障决策体系”(2011BAC09B08-07)
【CateGory Index】: S812
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