Funding for this research was provided by:
National Natural Science Foundation of China (91749109, 81701394)
National Key R&D Program of China (2018YFC2000400)
The Second Tibetan Plateau Scientific Expedition and Research (2019QZKK0607)
Key Research Program of Frontiers Science of the Chinese Academy of Sciences (QYZDB-SSW-SMC020)
Article History
Received: 14 October 2019
Accepted: 3 February 2020
First Online: 24 February 2020
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: The authors declare that they have no competing interests.