珍稀濒危植物金花猕猴桃优势群落特征

Analysis on the characteristics of the dominant community of rare and endangered plant Actinidia chrysantha

在样方调查的基础上,对金花猕猴桃Actinidia chrysantha优势群落的物种组成、垂直结构、生活型、乔木层重要值和年龄结构等进行了分析。结果表明:在600 m2的样地内,共有维管束植物77种,隶属于34科56属;群落垂直结构复杂,可分为乔木层、灌木层、草本层和藤本植物,乔木层又可划分为3个亚层;群落生活型以高位芽为主,占总数的76.7%;重要值分析的结果显示,金花猕猴桃在群落中的优势度最高;金花猕猴桃种群年龄结构目前为稳定型,有衰退的趋势,应对其进行合理保护。

Actinidia chrysantha is a rare germ plasm resource of genetic breeding,which is the one and only species having golden yellow flowers in Actinidia genus.On the basis of the community investigation,the species component,vertical structure,life-form,important value and age structure of the Actinidia chrysantha community are analyzed in this article.The results indicated that there are 77 vascular plant species,belonging to 56 genera and 34 families in 600 m2 plots;the vertical structure of the community is composed of tree layer,shrub layer,herb layer and vines,and the tree layer can be divided into three sublayers,the life-form is consisted mainly of phanerophytes,which account for 76.7% of total species.Analysis on the important value of the tree layer showed that the dominance degree of Actinidia chrysantha is the highest.Age structure of the population appears with stable type,but the population will tend to decline,which means it should be reasonable protected.