About the Authors

Xinxin Wang

Affiliation Laboratory of Critical Zone Evolution, School of Earth Sciences, China University of Geosciences, Wuhan, China

Xianyu Huang

xianyu.huang@gmail.com

Affiliations Laboratory of Critical Zone Evolution, School of Earth Sciences, China University of Geosciences, Wuhan, China, State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, China

Dirk Sachse

Affiliations Institute of Earth and Environmental Science, University of Potsdam, Potsdam, Germany, Organic Surface Geochemistry Lab, Section 5.1 Geomorphology, GFZ German Research Centre for Geosciences, Potsdam, Germany

Weihua Ding

Affiliation Laboratory of Critical Zone Evolution, School of Earth Sciences, China University of Geosciences, Wuhan, China

Jiantao Xue

Affiliation Laboratory of Critical Zone Evolution, School of Earth Sciences, China University of Geosciences, Wuhan, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: XW XH. Performed the experiments: XW WD. Analyzed the data: XW XH DS. Wrote the paper: XW XH DS. Performed the field work: JX WD XH.