Man, Wang
Wang, Shaobin
Yang, Hao
Article History
Received: 21 January 2021
Accepted: 10 May 2021
First Online: 22 May 2021
Declarations
:
: There is no submission that has data collected from individual participates or samples of human subjects. The ethics committee of the Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences ruled that no formal ethics approval was required to carry out research from the data sources.
: Not applicable.
: The authors declare that they have no competing interests.