Funding for this research was provided by:
National Natural Science Foundation of China (41521004, 41705047)
Strategic Priority Research Program of Chinese Academy of Sciences (No. XDA2006010301)
Foundation of Key Laboratory for Semi-Arid Climate Change of the Ministry of Education in Lanzhou University from the Fundamental Research Funds for the Central Universities (lzujbky-2017-bt04)
China 111 project (No. B13045)
Article History
Received: 23 January 2019
Accepted: 21 November 2019
First Online: 14 December 2019