Abstract: The community of Juglans mandshurica in the Huoshan Mountain of Shanxi Province was investigated by the methods of quatrat and plotless sampling. The importance values of 34 tree species were calculated, and the community ecological features of the community in species composition,appearance and vertical structure were analyzed.The composition of the families and genera of 187 vascular species,the lifeform composition and the types of distribution regions, as well as the species diversity and ecological dominance of 23 communities consisting of 26 tree species and 20 shrub species in23 plots were also analyzed. The interaction between the J.mandshurica community and its environment was expounded,which could provide a scientific basis for community management and resource evaluation and utilization.

Key words: Juglans mandshurica, Community feature, Flora analysis, built-up land expansion, remote sensing based ecological index (RSEI), ecology, remote sensing, Jinjiang, index-based built-up index (IBI)