About the Authors

Yongyong Ma

Affiliations The State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, 710061, China, The University of the Chinese Academy of Science, Beijing, 100049, China

Yu Liu

liuyu@loess.llqg.ac.cn

Affiliations The State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, 710061, China, Joint Center for Global Change Studies (JCGCS), Beijing Normal University, Beijing, 100875, China

Huiming Song

Affiliations The State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, 710061, China, Joint Center for Global Change Studies (JCGCS), Beijing Normal University, Beijing, 100875, China

Junyan Sun

Affiliation The State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, 710061, China

Ying Lei

Affiliation The State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, 710061, China

Yanchao Wang

Affiliation Department of Geography, Xingtai University, Xingtai, 054001, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: Y. Liu YYM HMS. Performed the experiments: YYM HMS JYS Y. Lei YCW. Analyzed the data: YYM HMS. Contributed reagents/materials/analysis tools: YYM HMS JYS Y. Lei. Wrote the paper: YYM Y. Liu HMS JYS Y. Lei YCW.