1 Key Laboratory of Agricultural Water Resources, Hebei Key Laboratory of Soil Ecology, Center for Agricultural Resources Research, Institute of Genetic and Developmental Biology , The Chinese Academy of Sciences , 286 Huaizhong Road , Shijiazhuang 050021 , Hebei , China.
2 International Institute for Applied Systems Analysis (IIASA) , Laxenburg A-2361 , Austria.
3 The Institute of Environmental Engineering , University of Zielona Góra , Zielona Góra 65-417 , Poland.
4 Wageningen Environmental Research , Wageningen University and Research , P.O. Box 47, 6700 AA , Wageningen , The Netherlands.
5 Sustainable Agricultural Sciences , Rothamsted Research , North Wyke , Okehampton EX20 2SB , U.K.
6 School of Land Resources and Urban&Rural Planning , Hebei GEO University , Shijiazhuang 050031 , China.