State Key Laboratory of Desert and Oasis Ecology Institute of Ecology and Geography Academy of Sciences 830011;
University of Chinese Academy of Sciences 100049;
Research Center for Ecology and Environment of Central Asia Academy of Sciences 830011;
China-Pakistan Joint Research Center on Earth Sciences Academy of Sciences and Higher Education Commission 45320;
School of Geography and Tourism Normal University 276800;
College of Geographical Science Mongolia Normal University 010022;
Xuchang University 461000;
Key Laboratory of Wetland Ecology and Environment Institute of Geography and Agroecology Academy of Sciences 130102;
School of Surveying and Land Information Engineering Polytechnic University 454000;
glacier area change; normalized snow cover index(NDSI); climate change; remote sensing; Altay Mountains; Tianshan Mountains; Karakorum Mountains;