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利用1972年绘制的地形图,1994年Landsat TM遥感影像,2000年中巴遥感影像和2007年获取的ASTER遥感影像为数据源,通过遥感图像处理技术和人工解译对祁连山东段冷龙岭冰川进行研究,分别得到1972年,1994年,2000年和2007年冷龙岭区冰川边界并绘制冰川边界图,进而分析了该区近年来的冰川变化.结果表明:1972-2007年近35a以来冷龙岭冰川全部处于退缩状态,有27条冰川消失,冰川面积减少了23.6%;有后期加速趋势的特征,南坡比北坡退缩幅度要大.
Landsat TM remote sensing images in 1994, China-Pakistan remote sensing images in 2000, and ASTER remote sensing images acquired in 2007 were used as data sources. Based on remote sensing image processing and artificial interpretation, the cold-ridge glaciers in the eastern Qilian Mountains The author obtained the boundary of glacier in Leng Long Ling district in 1972, 1994, 2000 and 2007 respectively and drawn the glacier boundary map, and then analyzed the change of glacier in recent years in this area.The results show that in the past 35 years since 1972 Longling glaciers are all in a state of retreat, with 27 glaciers disappearing and the area of glaciers reduced by 23.6%. With the characteristics of later acceleration, the south slope retreats more than the northern slope.