福建万木林保护区观光木群落物种相对多度模型的拟合研究

APPLICATION OF VARIOUS PATTERNS TO THE STUDY ON SPECIES RELATIVE ABUNDANCE IN TSOONGIO DENDRON ODORUM COMMUNITY

摘要:

应用群落物种相对多度分布的几何级数分布模型、对数级数分布模型、对数正态分布模型、分割线段模型和Weibull模型,对观光木群落物种相对多度分布进行了对比研究。结果表明,对于乔木层物种,其相对多度分布可用对数级数分布、对数正态分布、Weibull分布、几何级数分布和分割线段模型来拟合;而对于灌木层物种相对多度分布则可用对数级数分布、对数正态分布和Weibull分布加以拟合。研究结果为观光木群落物种多样性保护提供了理论基础。

Abstract:

Species relative abundanee distribution in Tsoongiodendro odorum community in Wanmulin Nature Reserve，Fujian Province, was studied by using patterns of geometric series distribution，log series distribution, log normal distribution，broken stick modeI and W eibul1 distribution to evaluate the simulation of such methods．Twenty-two species in tree layer were randomly investigated，and 33 species in shrub layer were surveyed in a quadrat of 5 m × 10 m．The simulation results show that the species relative abundance of tree layer in the community can be well described by all the models mentioned above，while that of shrub layer can be well described by log series distribution, log normal distribution and Weibull distribution．It is suggested that these methods might be useful for the protection of biodiversity of the community dominated by endangered Tsoongiodendron oderum．