Funding for this research was provided by:
the Strategic Priority Research Program of Chinese Academy of Sciences (XDA20060101)
National Natural Science Foundation of China (41661144043)
Key Research Program of Frontier Sciences of Chinese Academy of Sciences (QYZDJ-SSW-DQC019)
Second Tibetan Plateau Scientific Expedition and Research (STEP) program (2019QZKK0103)
Article History
Received: 9 September 2019
Accepted: 12 June 2020
First Online: 22 June 2020