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. 2021 Jun 1;5(6):e2021GH000427. doi: 10.1029/2021GH000427

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© 2021. The Authors. GeoHealth published by Wiley Periodicals LLC on behalf of American Geophysical Union.

This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.

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Study Area. Guangzhou is selected as a case study. It is the capital of Guangdong province, and near to Hong Kong, Macau and Shenzhen. The study area is located in the southwest of Guangzhou, a highly urbanized area.