1. School of Geography and Planning, Sun Yat-Sen University, Guangzhou, China
2. State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Beijing, China
3. Institute of Land Surface System and Sustainability, Faculty of Geographical Science, Beijing Normal University, Beijing, China
4. Guangdong Key Laboratory for Urbanization and Geo-simulation, Sun Yat-Sen University, Guangzhou, China