中文摘要：

利用1956年航测、1970／1973年1：50000地形图以及野牛沟流域2003年ASTER影像获取的3期冰川资料，对黑河源头西支野牛沟流域的冰川时空变化进行了分析．通过分析流域气温变化和冰川变化的关系，探讨了流域冰川变化对河川径流的影响．结果表明：野牛沟流域1956--1970／1973年冰川总面积减少9．29％，年平均消退0．54％；1970／1973--2003年冰川总面积减少了18．23％，年平均消退0．60％．流域内冰川条数由1956年的165条减少为2003年的144条，1956—1970／1973年间流域冰川储量减少了2．29×10^8m^2，年均损失约0．13×10^8m^3；从1970／1973年到2003年，冰川储量减少了4．19×10^8m^3，年均损失约0．14×10^8m^2．从1956年到2003年，冰川变化率随着冰川面积的增加而降低，冰川萎缩速度有加快的迹象，而流域年平均温度也有加快升高的趋势．冰川的消退对于流域径流量的影响不大。

英文摘要：

Based on the glacier data in three periods -Glacier Inventory of China （Qilian Mountains） in 1956, topographic maps of 1：50000 in 1970/ 1973 and the ASTER remote sensing images in 2003, variations of the glaciers in Yeniugou River watershed, source of the Heihe River, from 1956 to 1970/1973, and from 1970/1973 to 2003 ＇are analyzed. The results indicate that the glacier area had decreased by about 9.29% from 1956 to 1970/ 1973 and 18. 23% from 1970/1973 to 2003. The averaged declining rate was about 0. 54% per year from 1956 to 1970/1973 and 0. 60% per year from 1970/1973 to 2003. The number of glaciers in theYeniugou River basin had decreased from 165 in 1956 to 144 in 2003. Glacier volume had decreased about 229 million cubic meters from 1956 to 1970/ 1973 and 419 million cubic meters from 1970/1973 to 2003. The averaged loss rate was about 13 million cubic metersper year from 1956 to 1970/1973 and 14 million cubic metersper year from 1970/ 1973 to 2003. The glacier variation rate from 1956 to 2003 was inversely proportional to the glacier area. Annual mean temperature increased in the Yeniugou River basin from 1956 to 2003, and the increasing rate was faster in 1970/1973--2003 than that from 1956 to 1970/1973, which agreed with the retreating features of the glaciers. Because glacier area in this watershed is fewer, the effect of glacier decreasing on runoff in Yeniugou River watershed is relatively small.