贵州习水自然保护区福建柏群落组成及结构研究

Community Composition and Structure of Fokienia hodginsi Community in Xishui Nature Reserve in Guizhou

以习水国家级自然保护区天然福建柏群落为调查研究对象,分析了群落的物种组成、外貌特征和结构特征,定量计测了乔木层主要树种的群落特征指标。结果表明:习水保护区福建柏群落植物共有30科43属47种;群落垂直结构明显,分为乔木层、灌木层、草本层;福建柏在群落中处于优势种地位,但因缺乏更新层,在自然种群中,属于一个衰退种,整个群落将逐渐演替为常绿阔叶林。

Investigation was carried out in the Fokienia hodginsii community in Xishui Nature Reserve from the aspects of species composition,physiognomic and structural features, as well as the quantitative meas- urement of the flora characteristic indices of the main species in the tree layer. It was found that there exis- ted 47 plant species belonging to 43 genus and 30 families within F. hodginsii community in the reserve. Distinct vertical structures were observed： tree layer,shrub layer,and herbal layer. F. hodginsii was the dominant specie in the community. However,it was in its recession stage in natural population because of the lack of renewal layer. Therefore, the whole community will gradually evolve to evergreen broad-leaved forest.