上海城市园林植物群落生态结构的研究

本文从探索城市绿化的基本单位－园林植物群落的构型规律出发，分析了上海城市园林植物群落的组成结构及土壤光照等生态因子对植物群落结构与功能的影响。认为城市园林各落虽受人为因素影响较大，但在结构组成与体相上仍表现出地性植被的特征；群落下层植物的分布受上层植物所营造的小生境的影响，种类较丰富，且表现出一定的关联性。因子分析表明群落结构各因子存在着相关性，其信息量的８２．５％集中在四个主因子上，即：冠盖因子

Study on Ecological Structure of the Ornamenfal Plants Community in Shanghai

This paper based on analyzing the effect of the component of the plant community and ecological factor, such as: soil, illumination and etc., upon the structure and function of urban plant community, probing into the configuration regularity of urban plant community. Result shows: the component and forest phase of the urban plant community still has a feature of zonal vegetation although it is influence by people activity; The habitat made by upper stratum effect on under plants distribution in plant community, under plant species is diversity. The result of factor analysis shows: the relatedness exists between structure factors of plant community, four factors contain 85%of information content: canopy, average high of arborous layer, density of arborous layer and underbrush character. The soil factor correlate with the height growth and density of the community; The species component, density and index of crown cover in the tree layer effect on distribution of illumination and under plants in the plant community. Analyzing shows: the landscape of the community is most correlative to the structure, the broad-leaf mixed forest has a most landscape effect in Shanghai.