Species richness and composition of shrub-encroached grasslands in relation to environmental factors in northern China
Luhong Zhou, Haihua Shen, Leiyi Chen, He Li, Pujin Zhang, Xia Zhao, Taoyu Liu, Shangshi Liu, Aijun Xing, Huifeng Hu and Jingyun Fang
Journal of Plant Ecology . 2019, (1): 56 -66 .  DOI: 10.1093/jpe/rtx062