台州绿心区典型森林群落的物种多样性

摘要

以台州绿心区内6个典型的森林群落（Ⅰ.枫香＋榆树＋朴树、Ⅱ.朴树＋枫杨＋马尾松、Ⅲ.无患子＋乌桕＋柏木、Ⅳ.枫香＋三角枫＋柏木、Ⅴ.朴树＋大叶女贞＋马尾松、Ⅵ.香樟＋无患子＋三角枫群落）为研究对象，采用Shannon-Wie-ner（H）、Patrick丰富度（R1）、Margalef 物种丰富度（R2）、Pielou均匀度（J）、生态优势度（D）等5个指标分析森林群落的物种多样性。结果表明：①群落内植物资源较为丰富，共计31科40属50种，其中乔木层植物19种，灌木层植物22种，草本层植物种类稀少，仅9种；②乔木层和灌木层的物种丰富度和多样性指数显著高于草本层，但不同群落的同层次间各指数差别不大，均未达到显著差异；③6个群落的物种丰富度与群落多样性总体表现为：Ⅵ群落＞Ⅰ群落＞Ⅱ群落＞Ⅳ群落＞Ⅴ群落＞Ⅲ群落。%Species diversity of 6 typical forest communities (Ⅰ.Liquidambar formosana+Ulmus pumila+Celtis sinensis,Ⅱ.Celtis sinensis+Pterocarya stenoptera+Pinus massoniana,Ⅲ.Sapindus mukorossi+Sapium sebiferum+Cupressus funebris,Ⅳ.Liquidambar formosana+Acer buergerianum +Cupressus funebris,Ⅴ.Celtis sinensis +Ligustrum compactum +Pinus massoniana,Ⅵ.Machilus ichangensis+Sapindus mukorossi+Acer buergerianum) in Taizhou green heart was analyzed by using the community ecology re-search method.The results showed that:①The vertical structure of community was relatively beautifully layered which could be di-vided into tree layer,shrub layer,herb layer.Plant resources in the community is relatively abundant ,a total of 31 to 40 genera,50 tree layer,a total of 19 species of shrub layer 22 species of plant,herb layer species rare ,only nine;②tree layer and shrub layer of species richness and diversity index was significantly higher than that of herb layer ;But different community with each index differ-ence between layers did not reach significant difference;③species richness and diversity of 6 typical communities was performed:Ⅵ>Ⅰ>Ⅱ>Ⅳ>Ⅴ>Ⅲ.