1. School of Geography and Information Engineering, China University of Geosciences, Wuhan, People’s Republic of China
2. State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, People’s Republic of China
3. College of Resources and Environment, University of Chinese Academy of Science, Beijing, People’s Republic of China
4. IMAS-Hobart, University of Tasmania, Tasmania, Australia