Funding for this research was provided by:
the Second Tibetan Plateau Scientific Expedition and Research (STEP) program (2019QZKK0903)
International Science & Technology Cooperation Program of China (2018YFE0100100)
National Natural Science Foundation of China (41771539)
nternational Partnership Program of Chinese Academy of Sciences (131551KYSB20160002)
the China Postdoctoral Science Foundation (2019M663792)
Scientific Research Foundation of Northwest University (360051900075)
Article History
Received: 21 January 2020
Accepted: 20 July 2020
First Online: 27 July 2020