1. Key Laboratory of Urban Land Resources Monitoring and Simulation, Ministry of Natural Resources, Shenzhen University, Shenzhen 518060, China
2. Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring (Ministry of Education), School of Geosciences and Info-Physics, Central South University, Changsha 410083, China
3. Institute of Environment and Development, Guangdong Academy of Social Sciences, Guangzhou 510635, China
4. SFMAP Technology (Shenzhen) Ltd., Shenzhen 518000, China