1. The Key Laboratory of Natural Resources Monitoring in Tropical and Subtropical Area of South China, Ministry of Natural Resources, Guangzhou 510670, China
2. Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 610032, China
3. Surveying and Mapping Institute Lands and Resource Department of Guangdong Province, Guangzhou 529001, China
4. The Key Laboratory of Urban Land Resources Monitoring and Simulation, Ministry of Natural Resources, Shenzhen 518034, China