Figure 1

Location of the research site (China Baidumap, Version number: 18.8.0. link:https://map.baidu.com/zt/client/copyrightPc/index.html; Annotated by the author).
Location of the research site (China Baidumap, Version number: 18.8.0. link:https://map.baidu.com/zt/client/copyrightPc/index.html; Annotated by the author).