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| 1959-2008年新疆阿尔泰山友谊峰地区冰川变化特征 | |
| 引用本文： | 白金中,李忠勤,张明军,高闻宇,李开明.1959-2008年新疆阿尔泰山友谊峰地区冰川变化特征[J].干旱区地理,2012,35(1):116-124. |
| 作者姓名： | 白金中 李忠勤 张明军 高闻宇 李开明 |
| 作者单位： | 1. 西北师范大学地理与环境科学学院,甘肃兰州,730070 2. 西北师范大学地理与环境科学学院,甘肃兰州730070;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,甘肃兰州730000 3. 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,甘肃兰州,730000 |
| 基金项目： | 全球变化研究国家重大科学计划项目，中科院知识创新重要院方向项目，国家基金项目 |
| 摘 要： | 利用1959年地形图、2008年ASTER数字遥感影像及数字高程模型，在地理信息系统技术支持下分析了新疆阿尔泰山友谊峰地区冰川的变化特征。研究表明：1959-2008年该区冰川整体呈萎缩趋势，且变化幅度相对较大。相对于1959年，2008年冰川面积和数量分别变化-32.5%和-27.9%。其中，小于1 km2的冰川面积平均变化率为-66.7%，面积小于0.5 km2的冰川面积变化率大于-70%，面积大于1 km2以上的冰川面积变化率为-35.0%，1~5 km2的冰川面积变化率为-27.9%。冰川末端平均后退253 m，末端退缩比例为-18.3%，且南坡冰川末端变化率大于北坡。分析发现，研究区冰川面积亏损较大主要缘于该区小冰川分布数量较多（面积小于1 km2的冰川数量达75%)，对气候变化的响应较为敏感。 |
| 关 键 词： | 友谊峰 遥感 GIS 冰川变化 |
| 收稿时间： | 2011-03-21; |
Glacier changes in Youyi Area in the Altay Mountains of Xinjiang during 1959 -2008 |
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| BAI Jin-zhong , LI Zhong-qin , ZHANG Ming-jun , GAO Wen-yu , LI Kai-ming.Glacier changes in Youyi Area in the Altay Mountains of Xinjiang during 1959 -2008[J].Arid Land Geography,2012,35(1):116-124. | |
| Authors: | BAI Jin-zhong LI Zhong-qin ZHANG Ming-jun GAO Wen-yu LI Kai-ming |
| Institution: | 1 College of Geography and Environment Science,Northwest Normal University,Lanzhou 730070,Gansu,China; 2 The State Key Laboratory of Cryospheric Sciences/Tianshan Glaciological station,Cold and Arid Regions Environment and Engineering Research Institute,Chinese Academy of Sciences,Lanzhou 730000,Gansu,China) |
| Abstract: | Research on glacier change has been limited in Chinese Altay Mountains among the border of China,Russia and Mongolia,despite the fact that the number of glaciers in the Altay Mountains is less among all mountain ranges in China,and the glaciers in this region provide very important water resources for local economic development and drinking water for man use.Most of the research on glaciers in China is in Tianshan Mountains,Qinghai-Tibet Plateau and Qilian Mountains,but not in Altay Mountains.During the past several decades,most glaciers are in a state of rapid retreating due to climate warming.The glaciers of Youyi in the Altay Mountains were selected as the study area.Based on 1∶50 000 topographic maps in 1959,ASTER remote sensing data in 2008 and digital elevation model(DEM),the study area for glaciers was extracted by using the remote sensing image processing and analyzing method,and the changes of glaciers in the study area were analyzed under the support of the geographic information systems technology.The results indicate that the amplitude of the whole change of glaciers in the Youyi Area is large and glaciers in this area have retreated rapidly during the study period from 1959 to 2008.In the study period,the total area and number of the investigated glaciers(226) have reduced by 32.5%and 27.9%.At the same time,the results showed that glaciers average rate of change with area less than 1 km2 is-66.7% and glaciers average rate of change with area less than 0.5 km2 is-70%.Moreover,those glaciers with area from 1 to 5 km2 have reduced by 27.9%.The paper analyzed the reasons of the large change rate of glaciers,and the results indicate that the large change rate of glaciers is caused by the large proportion of small glaciers,whose glaciers smaller than 1 km2 account for nearly 75% in the investigated glaciers.Moreover,the results show that the larger the glaciers are,the higher the amplitude of the ablation is,but the reduced rate is lower.And those glaciers have the highest degree of response to climate change.The glaciers retreated by 253 m at a rate of 18.3%.The glacier changes exhibited obvious spatial differences,indicating that the reduction rate of glaciers to the south slope of the Youyi Area was larger than that of the north. |
| Keywords: | Youyi area remote sensing geographic information system glacier change |
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