1. Institute of RS and GIS, School of Earth and Space Sciences, Peking University, Beijing, China
2. State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing, China
3. School of Geography and Planning, Sun Yat-Sen University, Guangzhou, China
4. School of Tropical Agriculture and Forestry, Hainan University, Haikou, China
5. Beijing GreenValley Technology Company, Ltd., Beijing, China