1. Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research; Chinese Academy of Sciences; 11A, Datun Road, Chaoyang District Beijing 100101 PR China
2. College of Resources and Environment; University of Chinese Academy of Sciences; 19A, Yuquan Road, Shijingshan District Beijing 10049 PR China
3. International College; University of Chinese Academy of Sciences; 19A, Yuquan Road, Shijingshan District Beijing 10049 PR China