1. College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China
2. College of Geography and Remote Sensing Sciences, Xinjiang University, Urumqi 830017, China
3. College of Hydrology and Water Resources, Hohai University, Nanjing 210024, China
4. Department of Social Sciences, Education University of Hong Kong, Lo Ping Road, Tai Po, Hong Kong 999077, China
5. Department of Physical and Environmental Sciences, Colorado Mesa University, Grand Junction, CO 81501, USA
6. Xinjiang Institute of Technology, Aksu 843000, China
7. GeoInformatic Unit, Geography Section, School of Humanities, Universiti Sains Malaysia, Penang 11800, Malaysia
8. Departments of Earth Sciences, The University of Memphis, Memphis, TN 38152, USA