长江科学院院报2011，Vol.28Issue(6)：1-4,9,5.
长江源区近32年径流变化及影响因素分析
Runoff Variation and Its Impacting Factors in the Headwaters of the Yangtze River in Recent 32 Years
摘要
Abstract
The runoff data measured from 1978 to 2009 at Zhimenda hydrological station in the headwaters of Yangtze River are analyzed by Mann-Kendall test and slide T test to study the trend of runoff variation. Impacting factors including precipitation, temperature, and underlying surface condition are also elaborated in this paper. The results show that the overall annual runoff increased slightly during 1978-2009; while there was an abrupt change around 2004 according to slide T test. With regard to the impacting factors, the annual precipitation witnessed slight changes in general and a sudden change around 2002, and the annual air temperature series within the basin increased remarkably. It is concluded that the runoff increase during 1978-2009 is mainly caused by the increase of precipitation and ice melting.关键词
长江源区/径流变化/气候变化/Mann-Kendall趋势分析法/滑动T检验法Key words
headwaters of the Yangtze River/ runoff variation/ climate change分类
农业科技引用本文复制引用
朱延龙,陈进,陈广才..长江源区近32年径流变化及影响因素分析[J].长江科学院院报,2011,28(6):1-4,9,5.基金项目
水利部公益性行业科研专项长江流域用水总量控制管理与示范研究(201001005) （201001005）
