1. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water ConservationNorthwest A&F University Yangling Shaanxi China
2. Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of Sciences Beijing China
3. School of Geographical SciencesNanjing Normal University Nanjing Jiangsu China
4. National Engineering Research Center for Water Saving Irrigation at YanglingNorthwest A&F University Yangling Shaanxi China
5. Institute of Water Saving Agriculture in Arid Regions of ChinaNorthwest A & F University Yangling Shaanxi China
6. School of Life SciencesUniversity of Technology Sydney Sydney NSW Australia
7. College of Resources and EnvironmentUniversity of Chinese Academy of Sciences Beijing China