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Study on the Influence of Climate Change to the Runoff from mountain areas in the Hexi Region

LAN Yong-chao\+1, KANG Er-si\+1, WU Yan-qing\+1, ZHANG Ji-shi\+\{1, 2\}, HU Xing-ling\+2, ZHANG Xiao-jun\+1 (1. Cold and Arid Regions Environmental and Engineering Research Institute CAS, Lanzhou Gansu 730000, Chian; 2. Hydrology and Water Resourc  
Generally change on water resources is affected by human activities and climate change, but in the runoff forming areas in the high and intermediate mountains of Northwest China, it is governed mainly by climate change. The characteristics of climate change in the Hexi Region, an arid inland region, and their relation to global change are analyzed. So do the response of surface runoff to climate change and its future trend. The analyses are based on the observation of precipitation, air temperature and surface runoff in the Qilian Mountains and the Hexi Corridor. It is found that there are some obvious regional difference in the influences of global change on the weather and surface runoff in the Hexi Region, and surface runoff is of a greatly consanguineous relation with precipitation in the Qilian Mountains. However, in the western Hexi Region, air temperature change have some influences on the surface runoff.
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