福建武夷山野生早樱群落物种多样性

Study of the species diversity of Cerasus subhirtella var.ascendens community in Wuyi Mountain,Fujian province

为了更好地了解野生早樱(Cerasus subhirtellavar.ascendens)群落特征,通过对其典型群落的样方调查,利用物种多样性指数和物种多度分布进行了群落学分析。结果表明:与其他各层次比较,武夷山野生早樱群落中灌木层的多样性指数要优于乔木层和层间植物;Shannon-Wiener指数和Margalef丰富度指数在反映该群落物种多样性方面要优于Simpson指数;群落多度分布说明此群落富集种少、稀疏种多,符合对数级数分布。随着群落的进一步发展,武夷山野生早樱有可能消逝于林中;出于对其种群的扩大与保护,适当的人为干扰及开辟林窗,有利于其繁衍。

In order to understand the characteristic of Cerasus subhirtella var. ascendens community well, species diversity indices were utilized to analyze the community based on the field investigation of its typical sample plots. The results showed that compared with other layers, the species diversity index of shrub layer was higher than tree layer and liana layer. Shannon-Wiener index and Margalef richness index were better than Simpson index to explain the community species diversity. The distribution of species-abundant showed that the community included fewer dense species but more sparse species which accorded with log series distribution. When the community closed, Cerasus subhirtella var. ascendens should die away in the forest. For protecting and enlarging its population, it was suggested that moderate disturbance and artificial forest gaps were beneficial to the reproduction of Cerasus subhirtella var： ascendens.