Funding for this research was provided by:
Basic Research Fund of RIF (CAFYBB2018SY007, CAFYBB2017ZA001-3)
Received: 10 June 2019
Accepted: 19 December 2019
First Online: 6 January 2020
Ethics approval and consent to participate
: The experimental materials used in this study have been formally identified by the State Forestry and Grassland Administration, People’s Republic of China, under the identification number 2009–56.
: Not applicable.
: The authors declare that they have no competing interests.