金沙江上游气温变化及其水文响应分析

Using Mann-Kendall and Spearman test, the temperature trends, the temperature abrupt change and the hydrology responds to the temperature change on different time scales in the Upstream of the Jinsha River are analyzed .The results indicate that annual average temperature of the 7 gauging stations has an obvious warming trend at the speed of 0.31 C /decade in past fifty years , the biggest increase is in the early 21th century, the abrupt change mostly begin in 1980s; The water temperature of basin outlet tends to increase; the rainfall has no obvious trend; the downtrend of evaporation is obvious and vary hugely with seasons and years; annual runoff has a slight increase trend, and the temperature maybe cause some effects on the runoff, especially in spring.