贵州丹寨县龙泉山自然保护区典型植物群落结构及多样性研究

Study on the Structure and Diversity of Typical Plant Communities in Longquanshan Nature Reserve

为了解龙泉山保护区植物群落结构与物种组成特征,在保护区典型群落地段进行了样地调查,分析群落的物种组成、重要值以及物种多样性特征。结果表明:(1)该群落物种组成丰富,共有维管束植物51科79属120种。(2)群落中乔木层重要值最大的有贵州桤叶树Clethra kaipoensis、杉木Cunninghamia lanceolata、华山松Pinus armandii,灌木层重要值最大的有杜鹃Rhododendron simsii、紫金牛Ardisia japonica、油茶Camellia oleifera、秦氏箭竹Sinarundinaria chingii,草本层重要值最大的有蕨Pteridium aquilinum var.latiusculum、茜草Rubia cordifolia、丝叶薹草Carex capilliformis。(3)物种多样性上,灌木层、草本层物种丰富度最为丰富,均匀度较高,多样性亦较为丰富,乔木层各指数相对较低。

In order to know the characteristics of plant community structure and species composition in Longquanshan Nature Reserve,a typical sample plot survey was conducted in the typical community areas of the reserve,and the species composition,important values and species diversity characteristics of the community were analyzed.The results showed that:(1)There were 120 species of vascular plants belonging to 79 genera and 51 families in the community.(2)The biggest important value species of tree layer were Clethra kaipoensis,Cunninghamia lanceolata and Pinus armandii.The biggest important value speices of shrub layer were Rhododendron simsii,Ardisia japonica,Camellia oleifera and Sinarundinaria chingii.The biggest important value species of herb layer were Pteridium aquilinum var.latiusculum,Rubia cordifolia and Carex capilliformis.(3)As the species diversity,shrub and herb layers had the highest richness and higher enenness and abundance.These indexes of tree layer was relatively low.