Abstract: To provide a scientific basis for reforestation,the important value,Shannon-wiener index,Simpson index,richness index,Pielou evenness index and Sorensen similarity coefficient were applied to study the plant diversity in planning afforestation of Yuntai Mountain in Lianyungang.The results were as follows:Phyllostachys varioauriculata was the most in shrub layer,and the important value of Carex pallens was the highest in herb layer.Most plant diversity indexes of herb layer were higher than those of shrub layer basically.Sorensen similarity coefficients showed that the nearer the research areas,the more the same plant species they shared.Shrub plant diversity was related to soil thickness and exposure.The elevation and exposure had some effects on plant diversity in herb layer.

Key words: plant diversity, environment factors, Yuntai Mountain

摘要： 本文运用物种重要值、Shannon-wiener指数、Simpson指数、丰富度指数、Pielou均匀度指数以及Sorensen相似性系数,对连云港云台山规划造林区植物多样性进行研究,并对各个指数与环境因子作相关性分析。结果表明:该区域灌木层以毛壳竹最占优势,草本层中灰绿苔草重要值最高。植物多样性的各个指数基本上都是草本层>灌木层,Sorensen相似性系数表明样地相邻越近植物共有种数就越多。灌木多样性与土层厚度和坡向有关,而海拔和坡向对草本多样性有一定的影响。

关键词: 植物多样性, 环境因子, 云台山