id	keyword
brj-23920	et al
brj-23920	population
brj-23920	racemosa
brj-23920	trees
brj-23920	doi
brj-23920	size
brj-23920	class
brj-23920	conservation
brj-23920	article
brj-23920	study
brj-23920	china
brj-23920	classes
brj-23920	xie
brj-23920	individuals