1. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau Northwest A&F University Yangling China
2. Research Center of Soil and Water Conservation and Ecological Environment Ministry of Education, Chinese Academy of Sciences Yangling China
3. University of Chinese Academy of Sciences Beijing China
4. CAS Center for Excellence in Quaternary Science and Global Change Xi'an China
5. State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil Science, Chinese Academy of Sciences Nanjing China
6. BioTechnology Institute, University of Minnesota St. Paul Minnesota USA
7. Department of Soil, Water, and Climate University of Minnesota St. Paul Minnesota USA
8. Department of Forest Resources University of Minnesota St. Paul Minnesota USA
9. Institute for Global Change Biology University of Michigan Ann Arbor Michigan USA