蒙山国家森林公园龟蒙顶植物群落物种多样性及群落特征

采用样方调查法对临沂蒙山国家森林公园龟蒙顶植物群落物种多样性及群落特征进行研究。结果表明，4个样方（共1 600 m2）中，记录到维管植物43种，隶属18科31属。4个群落垂直结构明显，可划分为乔木层、灌木层和草本层，主要物种分别为栓皮栎、荆条和鸭跖草。从物种多样性指数的平均值来看，物种丰富度（S）、多样性（H′）、均匀度（E）和优势度（D）基本表现由大到小的顺序为草本层、灌木层、乔木层。但4个样方相同层次的物种多样性有一定差异。建议重点保护植物优势物种，同时加强群落物种多样性的发展，促进蒙山国家森林公园龟蒙顶植物群落发挥生态功能。

Diversity and characteristics of plants community in Guimengding of Mengshan National Forest Park

This paper elaborated species diversity and characteristics of plants community in Guimengding of Mengshan National Forest Park by taking quadrat survey method. The results showed that 43 kinds of vascular plants were recorded in four plots (total 1 600 m²), which belonging to 18 families and 31 genera. Community vertical structures of the four plots were obvious, which could be divided into tree layer, shrub layer and herbaceous layer, with different major species including Quercus variabilis, Vitex negundo var. heterophylla and Commelina communis respectively. From the average value of species diversity index, species richness (S), diversity (H'), evenness (E), dominance (D) showed that the order from big to small is herb layer,shrub layer and tree layer. However, there were certain differences in species diversity at the same level of the 4 plots. It is suggested that the dominant plant species should be protected, and the development of diversity of plants community should be strengthened at the same time so as to promote the ecology function of the plants community in Guimengding of Mengshan National Forest Park.