**Author details**

Zicheng Zheng1,2\* and Shuqin He1,2

\*Address all correspondence to: zichengzheng@yahoo.com.cn

1 College of Resource and Environment, Sichuan Agriculture University

2 State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau Institute of Water and Soil Conservation Chinese Academy of Sciences and Ministry of Water Re‐ sources, China

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