About the Authors

Wenming He

Affiliations School of Chemistry and Environment, Jiaying University, Meizhou, Guangdong, China, State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Northwest Agriculture & Forestry University, and Institute of Soil and Water Conservation; Chinese Academy of Sciences & Ministry of Water Resources, Yangling, Shaanxi, China

Hongming He

hongming.he@yahoo.com

Affiliation State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Northwest Agriculture & Forestry University, and Institute of Soil and Water Conservation; Chinese Academy of Sciences & Ministry of Water Resources, Yangling, Shaanxi, China

Mingyong Zhu

Affiliations State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Northwest Agriculture & Forestry University, and Institute of Soil and Water Conservation; Chinese Academy of Sciences & Ministry of Water Resources, Yangling, Shaanxi, China, Department of History and Sociology, Minnan Normal University, Zhangzhou, Fujian, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: WH HH. Performed the experiments: WH. Analyzed the data: WH HH MZ. Contributed reagents/materials/analysis tools: WH HH. Wrote the paper: HH. WH HH MZ.