Funding for this research was provided by:
Science and technology project of Beijing Municipal Administration Center of Parks (ZX2018014)
Science and technology project of Beijing Municipal Administration Center of Parks (ZX2020023)
the open project of Beijing key Laboratory of Greening Plants Breeding in China (Beijing Institute of Landscape Architecture) in 2019 (YZ201904)
National Natural Science Foundation of China (31870573)
Article History
Accepted: 20 November 2019
First Online: 5 December 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interests.