山东栒子群落组成与结构特征分析

[目的]了解济南佛峪、红叶谷山东栒子群落的组成及结构。[方法]运用植物群落学方法对山东栒子群落组成与结构特征进行研究。[结果]山东栒子群落共有植物30科55属64种;种-多度格局及Raunkiaer频度定律分析均表明,该群落常见种的多度优势明显,稀有种属植物种类较少,群落物种分布较均匀。乔木层中黄栌、侧柏、鹅耳枥等为优势种,其重要值分别为9.46%、3.47%、2.79%;灌木层中山东栒子、连翘、陕西荚蒾、雀儿舌头、扁担杆子占有很大优势,重要值分别为15.31%、5.57%、3.70%、2.53%、2.32%;草本层物种丰富,荩草占优势,层间植物种类较少。[结论]群落常见种优势明显,物种分布较均匀,垂直结构简单,层次清晰。

Study on Composition and Structure Characteristics of Cotoneaster schantungensis Klotz.Community

[Objective] The aim was to have an understand of Cotoneaster schantungensis community in the southern mountains of Jinan.[Method] Taking a field investigation on the typical sample plots of Cotoneaster schantungensis community,the composition,structure,relatively density,relatively frequency and important values were analyzed.[Result] There were 64 species,belong to 30 families and 55 genera in the community.The distribution nature of the dominant species and nondominant species was characterized by species abundance and raunkiaer frequency law.Community structure could be divided into four layers.The dominant species in the tree layer were Cotinus coggygria,Platydadus orientalis,Carpinus turczaninowii,with the important value(IV) about 9.64%,3.47%,2.79%,9.35% respectively;The dominant species in the shrub layer were Cotoneaster schantungensis,Forsythia suspensa,Viburnum schensianum,Leptopus chinensis,Grewia biloba with the IV about 15.31%,5.57%,3.07%,2.53% and 2.32% respectively.The species of herbaceous layer were rich and Hispid arthraxon was dominate specie in this layer.[Conclusion] In the community common species had obvious advantages,species were distributed more evenly,the inter stratum plants were simple,and the hierarchical structure was simple with clear hierarchy.