Funding for this research was provided by:
Special Fund for Forest Scientific Research in the Public Welfar (201404420)
National Natural Science Foundation of China (31672313, 31372220)
Article History
Received: 20 April 2019
Accepted: 23 September 2019
First Online: 21 October 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.