Funding for this research was provided by:
National Natural Science Foundation of China (Grants No. 31070342, 31570388)
Special Fund for Forest Scientific Research in the Public Welfare (Grant No. 201404302-4)
Fundamental Research Funds for the Central Universities (2452019174)
Article History
Received: 14 March 2019
Revised: 31 August 2019
Accepted: 10 September 2019
First Online: 21 September 2019