1 Key Laboratory of Earth Surface Processes and Regional Response in the Yangtze-Huaihe River Basin, Anhui Province, School of Geography and Tourism, Anhui Normal University, Wuhu 241002, China.
2 State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China.
3 Key Laboratory of Geographic Information Science (Ministry of Education), East China Normal University, Shanghai 200241, China.
4 College of Geography and Remote Sensing, Hohai University, Nanjing 210098, China.
5 Key Laboratory of Watershed Geographic Sciences, Nanjing Institute of Geography and Limnology, The Chinese Academy of Sciences, Nanjing 210008, China.