长株潭地区森林群落植物多样性研究

The plant diversity research on forest communities in Changzhutan area

对长沙岳麓山、湘潭昭山、株洲大京山等地部分天然林,选择有代表性地段设置样方75块进行实地调查,分析长株潭地区森林群落植物多样性,结果表明,①长株潭地区森林主要有15个天然群落,其中乔木46种,27科31属;灌木67种,29科35属;草本27种,13科19属.②群落类型与物种多样性的关系是:常绿、落叶阔叶混交林>针、阔混交林>常绿阔叶林.③15个群落植物种数量,灌木层最多,乔木层居中,草本层最少,植物分层分布格局基本符合较古老次生植被种的分布规律.④长株潭地区森林群落植物多样性指数值不高,反映城市化进程对城市周边自然环境尤其是森林植被的日益破碎化的影响.

There remain parts of natural forests in Yuelu Mountain in Changsha,Zhaoshan in Xiangtan,large Jingshan in Zhuzhou and other places,The author selects representative area in which 75 field investigations was setted up and according the ecology analysis the diversity of forest colony about the area of Changzhutan.The results showed that: ① There are 15 natural forest communities,including 46 species of trees,27 families and 31 genera,67 species of shrubs,29 families,35 genera,27 species of herbs,13 families and 19 genera in the areas of Changzhutan.②The relationship between community types and species diversity is: evergreen and deciduous broadleaved mixed forest> coniferous and broadleaved mixed forests> evergreen broadleaf forest.③The statistics of plant species in 15 plots shows that : shrub layer> tree layer> herb layer.The plant distribution pattern of stratification of vegetation is in accord with the ancient species distribution.④On the whole,the plant diversity index of the forest community in the area is not high,which reflects the impact of the process of urbanization on the natural environment around the city,especially on the increasing fragmentation of forest vegetation.Therefore,we must take effective and scientific measures to strengthen the conservation of plant diversity.⑤The research provide a scientific basis for the protection of hill area,the restoration of natural vegetation in the area,the conservation of biological diversity,and the promotion in the construction of ecological eco-friendly city groups.