id	keyword
brj-24628	trees
brj-24628	heritage
brj-24628	heritage trees
brj-24628	et al
brj-24628	lingshui
brj-24628	doi
brj-24628	species
brj-24628	urban
brj-24628	distribution
brj-24628	conservation
brj-24628	diversity
brj-24628	china
brj-24628	article
brj-24628	xie
brj-24628	patterns