中文摘要：

常绿阔叶林是亚热带地区典型的地带性植被,对保护环境、维持全球性碳循环平衡和人类的持续发展都具有极其重要意义.本文采用群落生态学的方法对闽西九溪庐的常绿阔叶林植被的7个样方面积1 000 m2的样地进行调查和分析.结果表明：（1）九溪庐常绿阔叶林有37科57属共75种,其中蕨类植物5科6属7种种子植物32科51属68种;（2）群落的Shannon-Wiener指数（H＇）为4.25、Simpson指数（D）为0.981和群落优势度（C）0.019;（3）各层的多样性指数Shannon-Wiener指数（H＇）、Simpson指数（D）的变化趋势为灌木层〉乔木层〉草本层〉藤本;群落优势度（C）为藤本层〉草本层〉乔木层〉灌木层.

英文摘要：

Evergreen broad -leaved forest is a typical zonal vegetation in s ubtropical zone, which is very important for protecting environment, maintaining global carbon cycle balance and sustainable development of human beings. The community ecological investigation method had been adopted, and the study of community diversity had been conducted in evergreen broad - leaved forest with 7 quadrat area of 1000 m2 plots at Jiuxilu in MinXi. Results show： There are 75 species belonging to 37 families and 57 genera, in which 7 species, 6 genera 5 families are ferns, and 32 families, 51 genera and 68 species belonging to seed plants. Shannon - Wiener diversity index （ H）, Simpson index （D） and community dominance index（C） of Community was 4.25, 0.981 and 0.19 accordingly. The Shannon - Wiener diversity index （ H ） and Simpson index （D） in different layers of community presented ： shrub layer 〉 tree layer 〉 liana layer 〉 herb layer, while community dominance index presented ： herb layer 〉 tree layer 〉 liana layer 〉 shrub layer.