作　　者： ; ; ; ; ; ; ;

机构地区： 广东第二师范学院

出　　处： 《生态科学》 2012年第4期401-405,412,共6页

摘　　要： 永瓣藤(Monimopetalum chinense)是卫矛科(Celastraceae)的一个中国特有单型属植物,被列为国家二级稀有濒危保护物种。以11个样地调查资料为基础,从物种丰富度指数、物种多样性指数和均匀度指数等方面对濒危植物永瓣藤所在群落物种多样性进行了分析。结果表明:永瓣藤所在群落物种多样性较高,植物群落结构复杂,物种丰富;从平均值来看,物种丰富度指数和物种多样性指数灌木层>草本层>乔木层,物种均匀度指数草本层>灌木层>乔木层;乔木层物种贫乏,物种多样性较低,优势树种突出;永瓣藤受人类活动干扰较大,森林的乱砍滥伐和旅游的不合理开发给该物种带来严重的威胁。 Monimopetalum chinense is a plant belonging to a monotypic and endemic genus of Celastraceae in China. It is listed as one of the Chinese national grade-2 protective rare and endangered species. Based on the information of 11 quadrats, the species diversity of communities with endangered plant Monimopetalum chinense was analyzed by means of richness index, species diversity index and evenness index. The results showed that species diversity of communities with Monimopetalum chinense was high with complex structure of plant community and abundant species. On the average, the species richness index and species diversity index were in the order of shrub layer〉herb layer〉tree layer, while the species evenness index was sequenced as herb layer〉shrub layer〉tree layer. The species diversity in the tree layer was poor, the number of plant species was low, and the dominant plant species were prominent. The survival of Monimopetalum chinense was affected seriously by human activities, such as deforestation and unreasonable development of tourism.

关 键 词： 永瓣藤 群落 物种多样性 丰富度 均匀度

领　　域： [生物学]