1. State Environmental Protection Key Laboratory of Urban Ecological Environment Simulation and Protection, South China Institute of Environmental Sciences, Ministry of Ecology and Environment of China, Guangzhou 510535, China
2. Guangdong Engineering Technology Research Center of Heavy Metal Pollution Control and Restoration in Farmland Soil, Guangzhou 510535, China
3. School of Environmental Science and Engineering, Guangdong Provincial Key Lab of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510275, China
4. The Fourth Geological Brigade of Guangdong Provincial Geological Bureau, Zhanjiang 524057, China
5. Guangdong Provincial Key Laboratory of Remote Sensing and Geographical Information System, Guangzhou Institute of Geography, Guangdong Academy of Sciences, Guangzhou 510070, China