Funding for this research was provided by:
Beijing Common Construction Project Research and Demonstration on the Regression Technique of the Minimum Population of Wild Plants (2016YFC0503106)
Article History
Received: 20 May 2018
Revised: 14 August 2018
Accepted: 24 August 2018
First Online: 5 September 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.