Funding for this research was provided by:
Second Tibetan Plateau Scientific Expedition and Research Program of China (2019QZKK0405)
National Natural Science Foundation of China (41971130, 41871185)
National Basic Research Program of China (2014CB954303)
Article History
Received: 7 November 2019
Accepted: 3 February 2020
First Online: 15 February 2020