Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The map was prepared with ArcGIS10.1 (https://resources.arcgis.com/en/help/). The administrative boundary was republished from[34] under a CC BY license, with permission from Resource and Environment Science and Data Center (https://www.resdc.cn/), original copyright 2023.
