1. State Key Laboratory of Earth Surface Processes and Resource Ecology, Key Laboratory of Environmental Change and Natural Hazards, Faculty of Geographical Science; Beijing Normal University; Beijing 100875 China
2. Institute of Remote Sensing and Earth Science; Hangzhou Normal University; Hangzhou 311121 China
3. Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographical Sciences and Natural Resources Research; Chinese Academy of Sciences; Beijing China
4. College of Resources and Environment; University of Chinese Academy of Sciences; Beijing China
5. Natural Resources Institute Finland (Luke); FI-00790 Helsinki Finland