南水北调与水利科技2011，Vol.9Issue(1)：53-59,7.DOI:10.3724/SP.J.1201.2011.01053
长江源高寒区域降水和径流时空变化规律分析
Spatial and temporal Variations of Precipitation and Runoff in the Source Region of the Yangtze River
摘要
Abstract
The source region of the Yangtze River lies to northeast of the Northwestern Plateau in Sichuan,which is one of the most important areas of the Three-River headwaters region in China. In the recent 40 years, the frozen earth-ecological environment system in this area has changed greatly with climate warming. Particularly, the annual runoff decreased continuously, and the variation of the runoff had affected the function of conservation on water supply in the source region of the Yangtze River at the same time. Therefore,it is urgent to study the spatialtemporal variation of the runoff in the source region of the Yangtze River. Based on the data from the hydrologic and meteorological stationsincluding Tuotuo River,Wudaoliang,Zhiduo, Qumalai and Yushu, a multiplk time scales analysis has done to show the annual, inter-annual and decadal variations of the precipitation and runoff. Furthermore,the calculating results showed that annual runoff of the source region of the Yangtze River changed with precipitation,the runoff seasonal distribution focused from May to October and had a reducing trend,and decadal changes of runoff did not show obvious trend. These results have a very important scientific value and a practical meaning to the further study on the water resources security and the ecological environment in this area, the sustainable utilization of water resources in the middle and lower reaches of the river, and the security of the regional ecosystem in the Three Gorges reservoir area especially.关键词
长江源高寒区/降水量/径流量/时空变化Key words
the source regiori of the Yangtze River/ precipitation/ runoff/ spatial and temporal variations分类
天文与地球科学引用本文复制引用
梁川,侯小波,潘妮..长江源高寒区域降水和径流时空变化规律分析[J].南水北调与水利科技,2011,9(1):53-59,7.基金项目
国家自然科学基金重点项目(40730634-4) （40730634-4）
教育部博士点基金(JS20081231506819) （JS20081231506819）
