| 1. | Undergraduate department of geography and resource management 地理与资源管理学一年级生 |
| 2. | Department of geography and resource management 地理与资源管理学系 |
| 3. | Department of geography , peking university , beijing 100871 北京大学城市与环境学系,北京, 100871 |
| 4. | Department of geography , peking university , beijing , 100871 北京大学地理科学研究中心,北京, 100871 |
| 5. | Xu xuegong lin huiping fu zaiyi department of geography , peking university , beijing , 100871 许学工,林辉平,付在毅 |
| 6. | Prof . maggi leung assistant professor , department of geography and resource management (地理与资源管理学系助理教授) |
| 7. | Moe laboratory for earth surface processes and department of geography , peking university , beijing , 100871 北京大学城市与环境学系,地表过程分析与模拟教育部重点实验室,北京, 100871 |