淳安县生态公益林植物群落基本特征分析

采用标准样地调查与路线调查相结合的方法,对淳安县域内的主要生态公益林类型进行了群落特征的野外调研,对植物群落的种类组成、区系特征、群落结构和物种多样性进行了分析。结果表明,淳安县生态公益林植物群落物种丰富,共记录到维管束植物242种,隶属于74科162属。群落内区系地理成分复杂,与热带植物区系关系较密切,但温带区系成分也占有相当大的比重。根据Raunkiaer的分类系统对群落生活型分析,高位芽植物占绝对优势。群落总体水平的多样性指数表现为:阔叶林>针阔混交林>针叶林;群落不同层次的多样性指数表现为:灌木层>草本层>乔木层。

Study on Plant Communities Characteristics of Ecological Public Welfare Forest in Chun'an,Zhejiang

Based on the field investigation to communities characteristics of main ecological public welfare forest types in Chun'an,the species composition of plant communities,floristic characteristics,community structure and plant diversity were analyzed in this paper.The results revealed that there were 242 vascular plant species,belonging to 162 genera of 74 families in the ecological public welfare forest of Chun'an.Meanwhile there were complex floristic geography ingredients and the flora of the forest was of tropical in nature with a certain proportion of strong temperate elements.According to Raunkiaer's statistics of life-form,phaenerophytes ranked the absolute superiority.Community diversity index was in the order of broad-leaved forest>coniferous and broad-leaved mixed forest>coniferous forest,while the species diversity in- dex in different layer of communities was in the order of shrub layer>herb layer>tree layer.