1. Engineering Technology Research Center of Resources Environment and GIS, School of Geography and Tourism, Anhui Normal University, Wuhu, China
2. Chongqing Jinfo Mountain Karst Ecosystem National Observation and Research Station, School of Geographical Sciences, Southwest University, Chongqing, China
3. USDA, Agricultural Research Service, Beltsville Agricultural Research Center, Hydrology and Remote Sensing Laboratory, Beltsville, MD, USA
4. State Key Laboratory of Remote Sensing Science, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, China
5. State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Sciences, Beijing Normal University, Beijing, China
6. College of Atmospheric Sciences, Landzhou University, Landzhou, China