1. College of Land Management, Nanjing Agricultural University, Nanjing 210095, China
2. National & Local Joint Engineering, Research Center for Rural Land Resources Use and Consolidation, Nanjing 210095, China
3. Department of Epidemiology and Environmental Health, School of Public Health and Health Professions, University at Buffalo, Buffalo, NY 14214, USA
4. School of Geography and Remote Sensing, Hohai University, Nanjing 210098, China
5. College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
6. China Resources, Environment and Development Academy, Nanjing 210095, China