1. College of Natural Resources and Environment Northwest A&F Univ. Yangling 712100 China
2. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau Northwest A&F Univ. Yangling 712100 China
3. State key Laboratory of Grassland Agro‐ecosystems Lanzhou Univ. Lanzhou 730020 China
4. Jiangxi Provincial Key Laboratory of Soil Erosion and Prevention Nanchang 330029 China
5. College of Urban and Environmental Sciences Northwest Univ. Xi'an 710127 China
6. Science and Technology College Gannan Normal Univ. Ganzhou 341000 China
7. College of Water and Architectural Engineering Shihezi Univ. Shihezi 832000 China
8. CAS Center for Excellence in Quaternary Science and Global Change Xi'an 710061 China