Funding for this research was provided by:
Strategic Priority Research Program of the Chinese Academy of Sciences (XDA20020401)
Second Tibetan Plateau Scientific Exploration (2019QZKK0402)
National Natural Scientific Foundation of China (41671102, 41971145)
Article History
Received: 31 July 2019
Accepted: 6 September 2019
First Online: 29 October 2019