1 Key Laboratory of Agricultural Water Resources, Center for Agricultural Resources Research , Institute of Genetic and Developmental Biology, The Chinese Academy of Sciences , 286 Huaizhong Road , Shijiazhuang 050021 , Hebei China.
2 Wageningen Environmental Research, Wageningen University & Research , P.O. Box 47, 6700 AA , Wageningen , The Netherlands.
3 School of Environment, Natural Resources and Geography , Bangor University , Bangor , LL57 2UW , U.K.
4 ADAS Boxworth , Cambridge , CB23 4NN , U.K.
5 Research Center for Rural Economy, Ministry of Agriculture and Rural Affairs , No. 56, Xisizhuanta Hutong , Beijing 100810 , China.
6 Key Laboratory of Nonpoint Source Pollution Control , Ministry of Agriculture/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences , Beijing , China.
7 Water Systems and Global Change Group , Wageningen University & Research , Droevendaalsesteeg 4 , Wageningen , 6708 PB , The Netherlands.