摘要
根据野外样方调查数据采用对数级数分布、对数正态分布模型研究了广州从化陈和洞自然保护区常绿阔叶林的物种多度分布格局,试图寻找某种适合的理论分布来预测物种多度分布形式,以拓宽常绿阔叶林物种多样性研究的数量分析方法.结果表明,陈和洞自然保护区3个样地中胸径≥3 cm的乔木个体共有1 855株,林分平均密度为3 091株/hm2,其中,上库、上库南坡、上库山顶西坡的物种多度分别为648、366和841.以上3个样地的物种多度分布差异极显著(P<0.01),上库、上库山顶西坡处的乔木林树种多度分布格局均遵从对数级数分布和对数正态分布,上库南坡处的乔木树种遵从对数正态分布,但不遵从对数级数分布.总的来说,用对数分布模型描述常绿阔叶林的物种多度分布格局是基本可行的,同时采用"多度/频度"图解方式来探讨物种多度分布的对数分布,效果较好.
Based on the data collected from sampled surveys in the field work,the log series model and the truncated log normal model were used to calculate and simulate the abundance distribution of tree species in the broadleaved evergreen forest stands in Chenhedong Nature Reserve.The results show that there are 1 855 tress in Chenhedong Nature Reserve（DBH≥ 3 cm）,with an average tree density of 3 091 stems/hm2 the number of trees in Shangku stand,the southern slope of Shangku stand and the western slope on the mountaintop of Shangku is 648,366 and 841 stems,respectively.The abundance distribution of tree species in Shangku stand,the southern slope of Shangku stand and the western slope on the mountaintop of Shangku were significantly different from each other（P0.01）.Tree species of Shangku stand and the western slope on the mountaintop of Shangku stand obeyed the log series model and the truncated log normal model,however,the those of the southern slope of Shangku stand obeyed the log series model but not the truncated log normal model.Totally,log distribution model is basically suitable to fit the abundance distribution of the broadleaved evergreen forest.
出处
《华南农业大学学报》
CAS
CSCD
北大核心
2010年第4期63-67,共5页
Journal of South China Agricultural University
基金
广东省2009年"森林生态科技研究和推广"项目
广东省林业科技计划项目(2008-10)
关键词
物种多度分布
常绿阔叶林
陈和洞自然保护区
species abundance distribution
broadleaved evergreen forest
Chenhedong Nature Reserve
