Funding for this research was provided by:
National Natural Science Foundation of China (31600512)
Natural Science Foundation of Jiangsu Province (BK20160923)
Students Practice Innovation and Training Program of Nanjing Forestry University (201710298045Z, 201710298064Z)
Priority Academic Program Development of Jiangsu Higher Education Institutions
Article History
Received: 17 October 2018
Accepted: 18 April 2019
First Online: 7 May 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.