缙云山自然保护区常绿阔叶林定位站固定样方植物群落特征研究

本文研究了缙云山常绿阔叶林固定样方的环境条件,植物种类组成,群落结构特征和种群分布格局。固定样方在1ha 绝对保护的样地内,面积500m~2。海拔820m,砂岩,黄壤,典型的中亚热带气候。500m~2样方内有维管植物57种46属24科。木本37种,草本14种,藤本6种。植物属的分布区类型主要是热带性质,占总分布型的61.36%,种的分布型主要集中在热带亚洲和中国特有类型,分别均为38.60%。群落层次清楚,银叶木荷为建群种,小叶栲和白毛新木姜子为第二亚层优势种。

A Study on Properties of Plant Community of Fixed Plot of the Evergreen Broad-leaved Forest in Sanctuary of Jinyun Mountain

In this paper,the authors briefly introduce the environment condi- tion,the composition of plant categories,the structure characteristics of plant community and the population distribution pattern in the fixed quadrat of evergreen broad-leaved forest in Jinyun Mountain.The fixed quadrat is 500m~2 within the sample plot with the area of 1 ha proteced absolutedly.It is 820m above the sea level with sandstone and yellow earth,and with typical climate of intermediate subtropical monsoon.In the quadrat of 500m~2 there are 57 species,40 genera and 24 families of vaseula plants;37 species of woody plant;14 species of herb and 6 spe- cies of vine.It is shown that 27 genera(61.36%)are tropicdistribution; 10 genera(22.73%)are temperate distribution.For the species,it is proved that 22species(38.6%)are tropic-Asia distribution and China endemic distribution,11 species(19.3%)are East-Asia distribution.The plant community are divided obviously into three layers of tree,shrub and herb.The constructive species is Schima argentea,and the dominate species of the second layer are Castanopsis carlesil var.spinulosa and Neolitsea aurata var.glauca.