1. School of Geomatics and Geography, Liaoning Technical University, Fuxin, Liaoning, China
2. State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, and Research Center for Ecology and Environment of Central Asia, CAS, Urumqi, China
3. School for the Environment, University of Massachusetts, Boston, MA, USA
4. College of Resource and Environment Sciences, Xinjiang University, Xinjiang, China
5. USDA-ARS Hydrology and Remote Sensing Laboratory, Beltsville, MD, USA
6. Department of Geological and Atmospheric Sciences, Iowa State University, Ames, IA, USA
7. School of Geography and Remote Sensing Science, Beijing Normal University, Beijing, China
8. National-Local Joint Engineering Laboratory of Geo-Spatial Information Technology, Hunan University of Science and Technology, Xiangtan, Hunan, China