1. Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
2. College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
3. Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
4. Macau Environmental Research Institute, Macau University of Science and Technology, Macau 999078, China