1. Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing, China
2. Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
3. Faculty of Land and Food Systems, University of British Columbia, Vancouver, BC, Canada
4. Key Laboratory of Digital Earth Science, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, China