1. Key Laboratory of Agricultural Water Resources, Hebei Key Laboratory of Soil Ecology, Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, 286 Huaizhong Road, Shijiazhuang 050021, China
2. Water Systems and Global Change Group, Wageningen University & Research, Droevendaalsesteeg 4, Wageningen 6708 PB, The Netherlands
3. Laboratory of Geo-information Science and Remote Sensing, Wageningen University and Research, Droevendaalsesteeg 3, Wageningen 6708 PB, The Netherlands