怀化秤锤树群落结构特征分析

Structural characteristics analysis of Sinojackia oblongicarpa community

以怀化秤锤树野生群落为研究对象,采用样方调查的方法,调查和分析该群落中乔木层、灌木层、草本层的物种组成,以及群落结构和植物分布区类型。结果表明:该群落中共有植物37科51属56种,其中乔木层有植物6科6属6种,灌木层有植物18科24属27种,草本层有植物19科21属23种。从重要值上看,该群落乔木层中刨花润楠、怀化秤锤树、枫香树和灌木层中中南鱼藤、威灵仙、臭牡丹以及草本层中夏天无、石蒜、野菊等的重要值较大。从植物分布区类型上看,该群落中的种子植物以世界广布和泛热带(热带广布)的属为主。怀化秤锤树种群规模小、分布范围狭窄,自然更新较为困难,建议加强对怀化秤锤树的保护力度。

Taking the wild community of Sinojackia oblongicarpa as the research object,and using the method of sample survey to investigate and analyze the species composition,community structure,and plant distribution area types of the tree layer,shrub layer,and herbaceous layer in the community.The results indicate that there were 56 species of plants belonging to 51 genera and 37 families in thecommunity.There were 6 families,6 genera,and 6 species of trees,27 species of 24 genera of shrub,and 19 families,21 genera,and 23 species of herbaceous plant in the community.Based on the perspective of importance values,the important values of Machilus pauhoi,Sinojackia oblongicarpa,Liquidambar formosana in the tree layer,Derris fordii,Clematis chinensis,Clerodendrum bungei in the shrub layer,and Corydalis decambers,Lycoris radiata,Chrysanthemum indicum in the herbaceous layer were higher valume in the community,respectively.Based on the perspective of plant distribution types,the seed plants in the community were mainly distributed in the world wide and subtropical(tropical wide)genera.The population size and distribution range of S.oblongicarpa were small,making natural regeneration difficult.It was recommended to strengthen the protection efforts of S.oblongicarpa.