近50年来中国阿尔泰山友谊峰地区冰川储量变化  

Glacier volume change in Youyi area of Altay Mountains,China from 1959 to 2008

作　　者：骆书飞[1] 李忠勤[1,2] 王璞玉[2] 白金中[1] 康剑 孙吉舟 

机构地区：[1]西北师范大学地理与环境科学学院地理信息系统系,兰州730070 [2]中国科学院寒区旱区环境与工程研究所冰冻圈科学国家重点实验室/天山冰川站,兰州730000 [3]喀纳斯景区管理委员会,布尔津836600

出　　处：《干旱区资源与环境》2014年第5期180-185,共6页Journal of Arid Land Resources and Environment

基　　金：全球变化研究国家重大科学研究计划项目(2010CB951404);中科院知识创新重要方向项目(KZCX2-EW-311);国家基金项目(1141001040;41101066;J0930003/J0109);国家自然科学基金(41301069)资助

摘　　要：以中国阿尔泰山友谊峰地区为研究区,结合RS和GIS技术对该区冰川厚度、储量及面积进行了定量综合评价分析。结果表明:所研究的58条冰川,在过去的50年间,总面积减小了19.2%(平均每条冰川缩小0.363km2);共有10条消失了。冰川平均厚度减薄了24.12m;储量减少了2.649km3,冰川冰融水年径流量为4.88×106m3。分析显示:该区小于1km2的冰川数量占67%,但面积和储量主要集中于大于1km2的冰川,几条较大冰川厚度和储量的变化决定了该区域的变化趋势;小冰川绝对变化量小,相对变化率大,对气候变化的敏感性强。Combined with remote sensing and GIS,the spatial variability of glacier elevation changes in Youyi area of the Altay Mountain in China were obtained from two digital elevation models（ one is from 1： 50 000 topographic map in 1959 and the other is from ASTER remote sensing data in 2008）. Elevation changes were converted to volume changes by multiplication with the respective glacier area. This research presents elevation and area changes from 1985 to 1999 for about 58 glaciers in the Youyi area. The area of the glaciers had reduced 19.2%. The average area of individual glaciers had reduced 0. 363km2. 10 glaciers had melted away and the mean elevation change was-24. 12 m. The volume had reduced 2. 66km3,and the annual glacier runoff was 4. 88 ×106m3. The analysis shows that the amounts of the glaciers with a size smaller than 1km2are 67%,but the area and volume mainly concentrated in those larger than 1km2. So the elevation and volume changes of several larger glaciers determined the change trend in this region; the absolute variation of the smaller glaciers was small,but the relative change rate was much bigger,and the sensitivity to climate change was much stronger.

关 键 词：阿尔泰山 冰川储量变化 数字高程模型 ASTER 

分 类 号：P343.6[天文地球—水文科学]