Funding for this research was provided by:
China Scholarship Council (201908535030)
Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China, Ministry of Education, Southwest Forestry University (KLESWFU-201904)
Article History
Received: 9 October 2020
Accepted: 11 January 2021
First Online: 21 January 2021
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: The authors declare that they have no competing interests.