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)
National Natural Science Foundation of China (41871185)
National Basic Research Program of China (2014CB954303)
Article History
Received: 7 November 2019
Accepted: 3 February 2020
First Online: 15 February 2020