上海黄浦江水源涵养林群落学特征研究

对上海黄浦江水源涵养林群落特征进行了调查,分析了这些林分群落的植物组成、结构、性质,并计算了各主要种群的相对密度、相对频度、相对显著度及重要值。结果表明,该群落种类组成有45科84属96种,以草本植物占数量优势。乔木层中常绿植物占一定优势,杜英和香樟为优势树种;生活型组成则以高位芽植物和一年生植物占显著优势(均为37.50%)。群落各层的植物多样性指数次序为草本层>乔木层>灌木层。

Community Characteristics of Forests in Water Conservation Area of the Huangpu River in Shanghai

Community characteristics including compositions and structures of forests in water conservation area of the Huangpu River in Shanghai were investigated based on the analysis of the typical sample plots.In addition,relative density,frequency,dominance and important values were calculated.The results demonstrated that the community consisted of 96 species,84 genera and 54 families,among which herbs were the dominant species in the community.The evergreen tree species dominated in the tree layer,with Elaeocarpus sylvestris and Cinnamomum camphora being the predominant species.Phanerophytes and therophytes were significantly dominant life form with the value of 37.50%,respectively.Plant diversity indices were as following order:tree layer > shrub layer > herb layer.