Response of understory plant diversity to nitrogen deposition in Quercus wutaishanica forests of Mt. Dongling, Beijing
Zou Anlong, Ma Suhui, Ni Xiaofeng, Cai Qiong, Li Xiuping, Ji Chengjun
Biodiv Sci . 2019, (6): 607 -618 .  DOI: 10.17520/biods.2018346