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Impacts of Climate Change on Ecological Environment in Maqu Grassland,Gansu

WANG Su-ping~1, SONG Lian-chun~2,3, HAN Yong-xiang~2, FENG Jian-ying~2(1.College of Atmospheric Science,Lanzhou University,Lanzhou Gansu 730000,China;2.Lanzhou Arid MeteorologicalInstitute of China Meteorological Administration,Lanzhou Gansu 730020,China;3.China Meteorological Adminstration,Beijing 100081,China)  
Based the analysis on the climate,ecology and other economic factors in Maqu grassland,the causes of ecology deterioration are discussed.It is found that: 1) The climate has a trend of warming and drying;2) the rapid decrease of runoff of the Yellow River in Maqu has something to do with evaporation and meat yields of flocks and herds,which is an index reflecting anthropic activities,besides, permafrost thawing,temperature rising and precipitation decreasing also play important roles;3) the rapid decrease of grazing yield is associated closely with the dramatically increasing meat yields of flocks and herds,and also results from climate change,such as evaporation increasing and temperature rising.The conclusion is that climate change and the inconsequential anthropic activities result in the ecology deterioration in Maqu grassland.
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