1. Key Laboratory for Environmental Factors Control of Agro-Product Quality Safety, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China
2. Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin 300072, China
3. Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs of the People’s Republic of China, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
4. Hangzhou Yanqu Information Technology Co., Ltd, Hangzhou 310003, China
5. Department of Soil Quality, Wageningen University, P.O. Box 47, 6700AA Wageningen, The Netherlands