About the Authors

Zhizhong Kang

zzkang@cugb.edu.cn

Affiliation School of Land Science and Technology, China University of Geosciences, Beijing, China

Jinlei Chen

Affiliation School of Land Science and Technology, China University of Geosciences, Beijing, China

Baoqian Wang

Affiliation Beijing Siwei Spatial Data Technology Co., Ltd., Beijing, China

Competing Interests

One of the authors is employed by a commercial company (Beijing Siwei, Spatial Data Technology Co., Ltd). This does not alter the authors' adherence to PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: ZK. Performed the experiments: JC BW. Analyzed the data: ZK JC. Wrote the paper: ZK JC.