Wild Pteroceltis tatarinowii community of Daguisi national forest park in Huibei province as research material, the life form spectrum, species composition, floristic composition and species diversity were studied in order to provide guidance for the sustainable use and protection of Pteroceltis tatarinowii. The results showed that the ratio of phanerophytes in this community was 53. 8% , that of hemicryptophytes, cryptophytes, therophyte, chamaephytes was 23. 1%, 9. 6%, 9. 0% and 4. 5% respectively. The dominant species in tree layer and in shrub layer both were Pteroceltis tatarinowii, and that in herb layer was Cyrtomium fortunei. Main seed plants of the community were in northern temperate distribution zone. The species diversity indices of tree layer were 2. 364 (Shannon-wiener index), 1,081 (Simpson index) and 0. 504 (Pielou evenness index), that of shrub layer were 3. 595 (Shannon-wiener index), 1. 412 (Simpson index) and 0. 767 (Pielou evenness index), and that of herb layer were 3. 129 (Shannon-wiener index), 1. 401 (Simpson index), and 0. 668 (Pielou evenness index), respectively. Among them, there was the smallest species diversity in the tree layer and was the highest one in the shrub layer.%以湖北省大贵寺国家森林公园野生青檀群落为研究对象,研究其生活型谱、物种组成、区系成分、物种多样性等,为青檀的持续利用及保护提供参考.研究表明:该青檀群落中高位芽植物所占比例为53.8％,其次为地面芽植物,占23.1％,地下芽植物占9.6％,一年生植物占9.0％,地上芽植物占4.5％；乔木层和灌木层均以青檀为优势种,草本层以贯众为优势种；种子植物属区系成分以温带分布类型为主；乔木层的Shnnon-wiener指数、Simpson指数和均匀度指数分别为2.364、1.081、0.504,灌木层的分别是3.595、1.412、0.767,草本层的分别为3.129、1.401、0.668,三个层次中乔木层物种多样性水平最低,灌木层物种多样性水平最高.
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