长白山落叶阔叶混交林的物种多样性、种群空间分布格局及种间关联性研究

摘要/Abstract

摘要： 根据在吉林省蛟河实验管理局1 hm²落叶阔叶混交林样地调查结果,对落叶阔叶混交林的群落结构、物种多样性、主要树种的空间分布格局以及树木种群的种间关联进行了研究.结果表明,树木种群优势程度不明显;乔木、灌木、草本的均匀度指数、生态优势度指数都较低.对5个主要乔木种群的空间格局均呈现聚集分布;15个主要树种之间有14个种对存在着显著的种间关联,一个种独立;树种之间正关联的种对少,关联强度低,而负关联多且较高,群落结构组成不稳定,处于软阔叶林向硬阔叶林直至红松阔叶林过渡的阶段.

关键词: 群落结构, 物种多样性, 空间分布格局, 种间关联

Abstract: Based on the data collected from the sampling plot with an area of 1 hm² at the Experimental and Management Bureau of Jiaohe in Jilin Province,this paper analyzed and researched the community structure,biological diversity,spatial distribution pattern and interspecific association between tree species populations in a mixed deciduous broadleaved forest.The results indicated that there was no obvious dominant order among tree species populations,and the indices of tree species diversity such as Shannon-Wiener index (H'),Pielou evenness index (E) and Simpson ecological dominant index (D) were all low.Shrub and herb species diversity indices were also not high.The spatial distribution pattern of five dominant tree species all presented aggregative.Based on 2×2 contigency table,the interspecific associations of 15 tree species in the community were examined by means of χ ²-test,together with the association coefficient (AC).The results showed that there were 14 species pairs in 15 species showing significantly negative association.The proportion of species pairs showing negative association was much more than that of showing positive association.It could be deduced that the community was instable and at the stage of autogenic succession from soft deciduous broadleaved forest to hard deciduous broadleaved forest,and then,the Korean pine broadleaved forest.

Key words: Community structure, Biodiversity, Spatial distribution pattern, Interspecific association

中图分类号:

S718

郭忠玲, 马元丹, 郑金萍, 刘万德, 金哲峰. 长白山落叶阔叶混交林的物种多样性、种群空间分布格局及种间关联性研究[J]. 应用生态学报, 2004, (11): 2013-2018.

GUO Zhongling, MA Yuandan, ZHENG Jiping, LIU Wande, JIN Zefeng. Biodiversity of tree species,their populations' spatial distribution pattern and interspecific association in mixed deciduous broadleaved forest in Changbai Mountains[J]. Chinese Journal of Applied Ecology, 2004, (11): 2013-2018.

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