Spatiotemporal changes of typical glaciers and their responses to climate change in Xinjiang,Northwest China  

作　　者：HUANG Xiaoran BAO Anming GUO Hao MENG Fanhao ZHANG Pengfei ZHENG Guoxiong YU Tao QI Peng Vincent NZABARINDA DU Weibing 

机构地区：[1]State Key Laboratory of Desert and Oasis Ecology,Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences,Urumqi 830011,China [2]University of Chinese Academy of Sciences,Beijing 100049,China [3]Research Center for Ecology and Environment of Central Asia,Chinese Academy of Sciences,Urumqi 830011,China [4]China-Pakistan Joint Research Center on Earth Sciences,Chinese Academy of Sciences and Higher Education Commission,Islamabad 45320,Pakistan [5]School of Geography and Tourism,Qufu Normal University,Rizhao 276800,China [6]College of Geographical Science,Inner Mongolia Normal University,Hohhot 010022,China [7]Xuchang University,Xuchang 461000,China [8]Key Laboratory of Wetland Ecology and Environment,Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences,Changchun 130102,China [9]School of Surveying and Land Information Engineering,Henan Polytechnic University,Jiaozuo 454000,China

出　　处：《Journal of Arid Land》2022年第5期502-520,共19页干旱区科学（英文版）

基　　金：sponsored by the National Key Research&Development Program of China(2017YFB0504204);the K.C.Wong Education Foundation(GJTD-2020-14);the International Collaboration Project of the Chinese Academy of Sciences(131965KYSB20200029);the New Water Resources Strategic Research Project in Southern Xinjiang Uygur Autonomous Region,China(403-1005-YBN-FT6I-8)。

摘　　要：Glaciers are highly sensitive to climate change and are undergoing significant changes in mid-latitudes.In this study,we analyzed the spatiotemporal changes of typical glaciers and their responses to climate change in the period of 1990-2015 in 4 different mountainous sub-regions in Xinjiang Uygur Autonomous Region of Northwest China:the Bogda Peak and Karlik Mountain sub-regions in the Tianshan Mountains;the Yinsugaiti Glacier sub-region in the Karakorum Mountains;and the Youyi Peak sub-region in the Altay Mountains.The standardized snow cover index(NDSI)and correlation analysis were used to reveal the glacier area changes in the 4 sub-regions from 1990 to 2015.Glacial areas in the Bogda Peak,Karlik Mountain,Yinsugaiti Glacier,and Youyi Peak sub-regions in the period of 1990-2015 decreased by 57.7,369.1,369.1,and 170.4 km^(2),respectively.Analysis of glacier area center of gravity showed that quadrant changes of glacier areas in the 4 sub-regions moved towards the origin.Glacier area on the south aspect of the Karlik Mountain sub-region was larger than that on the north aspect,while glacier areas on the north aspect of the other 3 sub-regions were larger than those on the south aspect.Increased precipitation in the Karlik Mountain sub-region inhibited the retreat of glaciers to a certain extent.However,glacier area changes in the Bogda Peak and Youyi Peak sub-regions were not sensitive to the increased precipitation.On a seasonal time scale,glacier area changes in the Bogda Peak,Karlik Mountain,Yinsugaiti Glacier,and Youyi Peak sub-regions were mainly caused by accumulated temperature in the wet season;on an annual time scale,the correlation coefficient between glacier area and annual average temperature was-0.72 and passed the significance test at P<0.05 level in the Karlik Mountain sub-region.The findings of this study can provide a scientific basis for water resources management in the arid and semi-arid regions of Northwest China in the context of global warming.

关 键 词：glacier area change normalized snow cover index(NDSI) climate change remote sensing Altay Mountains Tianshan Mountains Karakorum Mountains 

分 类 号：P343.6[天文地球—水文科学] P467[天文地球—地球物理学]