Ms LIU Wanlu and Ms LI Yuanjie successfully finish their thesis defense. MS LIU Wanlu’s study aims to understand the influence of the green space in schoolyard (GS) and the environmental educational activities conducted within school (EEA) on children’s environmental attitude (EA) and pro-environmental behavior (PEB). Ms LI Yuanjie compared the historical (1978-1984) with the present (2015-2017) mistletoe-host interaction network including the composition of species and their interaction as well as network structure, she also investigated the influence of evolutionary history on the interaction network through reconstructing phylogenetic relationship of mistletoe and host species and measuring phylogenetic signal. Prof. WANG Hong of Kunming Institute of Botany, CAS, Prof. LIU Aizhong from Southwest Forestry University, and Prof. ZHOU Zhekun, Yang Xiaodong, and XING Yaowu of XTBG act as committee members for the defense.