State Key Laboratory of Resources and Environmental Information System;
Institute of Geographic Sciences and Natural Resources Research;
Chinese Academy of Sciences;
University of Chinese Academy of Sciences;
Department of Surveying and Mapping;
College of Mining Engineering;
Taiyuan University of Technology;
Xinjiang Institute of Ecology and Geography;
Chinese Academy of Sciences;
Sayram; Lake; inland; lake; areal; variation; water; level; change; glacial; retreat;