CAJ | 학술논문

群落谱系结构研究有助于我们深入了解群落构建的生态过程。我们在兴安落叶松样地中随机选取1000个点，分别以5，25，50，75，100米为半径建立小样方，选定NRI指数进行谱系结构的分析。结果显示：在所有的研究尺度上（样方半径＞5 m）群落谱系结构都显现为谱系聚集。在半径为5 m的抽样样方中，相当一部分表现出谱系发散的结果，因为在小空间尺度上的密度制约效应导致了物种分布的相对分散，谱系结构表现为发散；而随着空间尺度的增加，密度制约效应的强度逐渐减弱甚至消失，使得谱系结构又重新表现为聚集。
군락보계결구연구유조우아문심입료해군락구건적생태과정。아문재흥안락협송양지중수궤선취1000개점，분별이5，25，50，75，100미위반경건립소양방，선정NRI지수진행보계결구적분석。결과현시：재소유적연구척도상（양방반경＞5 m）군락보계결구도현현위보계취집。재반경위5 m적추양양방중，상당일부분표현출보계발산적결과，인위재소공간척도상적밀도제약효응도치료물충분포적상대분산，보계결구표현위발산；이수착공간척도적증가，밀도제약효응적강도축점감약심지소실，사득보계결구우중신표현위취집。
Understanding of the phyIogenetic structure of a community wiII provide insights into the reIative importance of different processes structuring the community. We randomIy chose 1000 subpIots at five spatiaI scaIes of radii 5,25,50,75 and 100 m in the forest of Larix gmeIinii pIot and anaIyzed phyIogenetic structure of subpIots at these scaIes with net reIatedness index ( NRI). Communities were phyIogeneticaIIy cIustered at aII spatiaI scaIes. There are pIenty of random pIots( radii 5 ) shows phyIogeneticaIIy overdispersed. This couId be the cause of the density restriction. With increasing scaIe,the strength of cIustering increased. This couId be the cause of the effect of the density restriction are week.