格氏栲自然保护区常绿阔叶林群落特征

在11000m²样地调查材料的基础上,分析了福建三明格氏栲自然保护区常绿阔叶林群落的种类组成、乔木种群的重要值、群落外貌、物种多样性、水平结构和垂直结构特征。该群落计有维管植物223种,隶属于80个科159属,其中单种属占总属数的80.5%,包括藤本在内的高位芽植物占总种数的85.2%。重要值高的乔木种群是格氏栲、木荷、米槠、马尾松、刮槠和山黄皮。主要乔木种群均服从聚集分布。群落垂直结构复杂,可分为乔木层、灌木层和草本层。生活型谱和物种多样性指数介于南亚热带季风常绿阔叶林和中亚热带常绿阔叶林之间。

Features of evergreen broad leaved forest community in Castanopsis kawakamii Nature Reserve

Based on the data collected from sample plots with an area of 11000 m^2, the species composition, importance values of tree population, physiognomy, species diversity and spatial structure of evergreen broad-leaved forest community in Castanopsis kawakamii Nature Reserve of Sanming, Fujian, were analyzed. The community is composed of 223 vascular plant species belonging to 80 families and 159 genera, 80.5 percent of genera contain only single species. The phanerophytes including the vines take 85.2 percent of the total. The tree populations such as Castanopsis kawakamii, Schima superba, Castanopsis carlesii, Pinus massoniana, Castanopsis eyrei and Randia cochinchinensis are in great important values. The spatial patterns of dominant tree populations conform to aggregated distribution. The vertical structure of community is relatively complicated which can be divided into tree layer, shrub layer and herb layer. The comparative analyzes on life form spectrum and species diversity of the community showed that this forest is a transitional type from south-subtropical rain forest to mid-subtropical evergreen broad-leaved forest.