Key Laboratory of Non-point Source Pollution Control, Ministry of Agriculture, Beijing 100081, P.R.China;
Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China;
Earth Systems Research Center, Institute for the Study of Earth, Oceans and Space, University of New Hampshire, New Hampshire 03824, USA;
School of Environment and Sustainability, Global Institute for Water Security, University of Saskatchewan, SK S7N 0X4, Canada;
Key Laboratory of Non-point Source Pollution Control, Ministry of Agriculture, Beijing 100081, P.R.China;
Key Laboratory of Non-point Source Pollution Control, Ministry of Agriculture, Beijing 100081, P.R.China;
Key Laboratory of Non-point Source Pollution Control, Ministry of Agriculture, Beijing 100081, P.R.China;
Key Laboratory of Non-point Source Pollution Control, Ministry of Agriculture, Beijing 100081, P.R.China;
Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, P.R.China;
Key Laboratory of Non-point Source Pollution Control, Ministry of Agriculture, Beijing 100081, P.R.China;