Funding for this research was provided by:
the Second Tibetan Plateau Scientific Expedition and Research Project (2019QZKK0103)
National Natural Science Foundation of China (41775106, 41975007, 41905008)
the Scientific Research Foundation of Chengdu University of Information Technology (KYTZ201822)
Received: 12 January 2021
Accepted: 17 May 2021
First Online: 5 June 2021
: Authors agree to publish this paper.
: The authors declare no competing interests.