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. 2026 Jan 20;14:1693960. doi: 10.3389/fpubh.2026.1693960

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Copyright © 2026 Hou, Yang, Zhang, Zhang, Yang, Zhang, Huang, Dai, Wang, Yuan, Cui, Li, Leng, Zhao and Wen.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Map collage showing Gansu Province in China, highlighting the Gannan Tibetan Autonomous Prefecture. The top left image depicts China's map with Gansu Province in purple. The bottom left shows a detailed map of Gansu Province. The right image presents a close-up of Gannan with regions like Xiahe, Hezuo, Lintan, Luqu, Diebu, Zhouqu, and Maqu labeled. — This study examines the geographical locations of the eight counties involved.