About the Authors

Jin-Feng Wang

wangjf@lreis.ac.cn

Affiliation State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China

Mao-Gui Hu

Affiliation State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China

Cheng-Dong Xu

Affiliation State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China

George Christakos

Current address: Department of Environment and Natural Resources, Zhejiang University, Hangzhou, China

Affiliation Department of Geography, San Diego State University, San Diego, California, United States of America

Yu Zhao

Affiliations State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China, School of Geosciences and Info-Physics, Central South University, Changsha, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JFW GC. Performed the experiments: MGH CDX YZ. Analyzed the data: JFW MGH CDX YZ. Contributed reagents/materials/analysis tools: MGH YZ GC. Wrote the paper: CDX JFW.