1. State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, CAS, Urumqi, China
2. Research Center for Ecology and Environment of Central Asia, CAS, Urumqi, China
3. College of Surveying and Geoinformatics, Tongji University, Shanghai, China
4. Department of Earth Observation Science, Faculty of Geo-Information Science and Earth Observation (ITC), University of Twente, Enschede, The Netherlands
5. Department of Geographical Information Science, Jiangsu Normal University, Xuzhou, China
6. School of Geosciences & Info-Physics, Central South University, China