1. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau Institute of Soil and Water Conservation CAS and MWR Yangling China
2. University of Chinese Academy of Sciences Beijing China
3. Sino‐French Institute for Earth System Science, College of Urban and Environmental Sciences Peking University Beijing China
4. Department of Environmental Sciences University of Toledo Toledo Ohio USA
5. Agriculture Production and Research Division Department of Fisheries and Land Resources Government of Newfoundland and Labrador Corner Brook Newfoundland and Labrador Canada
6. State Key Laboratory of Loess and Quaternary Geology Institute of Earth Environment CAS Xi’an China
7. CAS Center for Excellence in Quaternary Science and Global Change Xi’an China