武夷山国家级自然保护区植物物种多样性研究

以植物群落调查样地资料为基础，从不同类型、不同层次的物种丰富度、多样性指数及均匀度指数对武夷山国家级自然保护区植物群落多样性进行了分析。本区植物群落多样性的变化规律为：物种丰富度、多样性指数及均匀度随该区植被演替趋势从针叶林、针阔叶混交林到常 阔叶林而增加，群落间变幅较大；植物生长型在物种丰富度、多样性指数及均匀度等多样性指数上均表现出灌木层＞乔木层的规律。毛竹林作为一种重要的植被类型，其灌木层物种多样性高于其它3种森林类型，但由于毛竹是无性繁殖，其在林分中占绝对优势，故乔木层物种多样性明显低于其它3种森林类型。

PLANT SPECIES DIVERSITY IN WUYISHAN NATIONAL NATURE RESERVE

Based on the sampling data, species richness, species diversity index and evenness index of plant communities in Wuyishan national nature reserve were discussed. The change law of community diversity in Wuyishan national nature reserve were as follows: species richness, species diversity index and evenness of plant communities increased along with the vegetation succession trend from needle leaved forest, needle broad leaves mixed forest to evergreen broad leaves forest with large variation among communities; the species richness, species diversity index and evenness of plant communities in different growth form all were in the following order: shrub layer>tree stratum. \%Phyllostachy heterocycla\% cv. \%pubescens\% community as an important vegetation, its species diversity in shrub layer was higher than that in other three communities; species diversity in tree stratum was obviously lower than that in other three communities, because of \%Phyllostachy heterocycla\% cv. pubescens asexual propagation and its dominance in community.