Abstract: Based on the data collected from sample plots with an area of 11 000m², the species composition, the types of distribution and species diversity of the evergreen broad-leaved forest community in Nature Reserve of Castanopsis kawakamii in Sanming City, Fujian province were investigated. The results showed that the community is composed of 223 species belonging to 159 genera of 80 families of vascular plants, accounting for 80.5 percent of the genera containing only single species. The geographical composition of the flora is complex, which comprises 12 of 15 distribution types of Chinese seed-plants, the tropical and sub-tropical components are dominating over the whole vascular plants, the pantropical distribution genus is in the majority of genera, followed by the tropical Asia one. There also exists some temperate-originated species. The descending order of the magnitude of species diversity was shrub layer, tree layer, herb layer. The evaluation on distribution types and species diversity of the community showed that this forest is a transitional type from south-subtropical forest to mid-subtropical evergreen broad-leaved forest.

Key words: Nature Reserve of Castanopsis kawakamii, evergreen broadleaved forest, distribution type, species diversity, Sanming City, Fujian Province

摘要： 本文在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植物种类组成、分布区类型和物种多样性特点。结果显示,群落共计有维管植物223种,隶属于80个科159属,其中单种属占总属数的80.5%;地理成分复杂,具有中国15个种子植物属分布区类型中的12个,且以热带亚热带成分为主,其中泛热带分布属的比例最高,其次为热带亚洲分布属,温带成分占有一定比例;群落不同层次多样性指数由大到小的变化规律为:灌木层 >乔木层 >草本层;植物分布区类型与物种多样性指数的分析表明,该群落是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的过渡类型。

关键词: 格氏栲自然保护区, 常绿阔叶林, 分布区类型, 物种多样性, 福建三明