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    陈贝贝, 王凯, 倪瑞强, 程艳霞. 长白山针阔混交林乔木幼苗组成与空间分布[J]. 北京林业大学学报, 2018, 40(2): 68-75. DOI: 10.13332/j.1000-1522.20170370
    引用本文: 陈贝贝, 王凯, 倪瑞强, 程艳霞. 长白山针阔混交林乔木幼苗组成与空间分布[J]. 北京林业大学学报, 2018, 40(2): 68-75. DOI: 10.13332/j.1000-1522.20170370
    Chen Bei-bei, Wang Kai, Ni Rui-qiang, Cheng Yan-xia. Composition and spatial pattern of tree seedlings in a coniferous and broadleaved mixed forest in Changbai Mountain of northeastern China[J]. Journal of Beijing Forestry University, 2018, 40(2): 68-75. DOI: 10.13332/j.1000-1522.20170370
    Citation: Chen Bei-bei, Wang Kai, Ni Rui-qiang, Cheng Yan-xia. Composition and spatial pattern of tree seedlings in a coniferous and broadleaved mixed forest in Changbai Mountain of northeastern China[J]. Journal of Beijing Forestry University, 2018, 40(2): 68-75. DOI: 10.13332/j.1000-1522.20170370

    长白山针阔混交林乔木幼苗组成与空间分布

    Composition and spatial pattern of tree seedlings in a coniferous and broadleaved mixed forest in Changbai Mountain of northeastern China

    • 摘要:
      目的了解长白山地区针阔混交林森林群落中乔木树种天然更新幼苗的组成及空间分布情况,为进一步科学经营奠定理论基础。
      方法以长白山光明林场针阔混交林固定样地为研究平台,通过对连续1 hm2面积内乔木幼苗和大树进行定位调查,分析了该森林群落中乔木幼苗的物种组成;运用点格局分析法,对样地内典型阔叶乔木(水曲柳、紫椴)和针叶乔木(红松、臭冷杉)幼苗的空间分布及幼苗与大树空间分布之间的关系进行研究。
      结果(1) 样地内乔木幼苗树种组成丰富,共调查到幼苗10 865株,隶属于17个乔木树种,且幼苗全部来自样地内大树树种,未发现样地外其他树种的幼苗;(2)从幼苗的空间分布格局来看,在较小的研究尺度上,水曲柳、紫椴、红松和臭冷杉的幼苗均呈现聚集性空间分布;(3)从幼苗与大树空间分布的关系来看,在一定的研究尺度范围内,水曲柳、紫椴幼苗与其大树表现出正相关关系,而红松、臭冷杉幼苗与其大树则表现为负相关关系。
      结论长白山针阔混交林中主要阔叶乔木和针叶乔木的幼苗在较小尺度上多表现为聚集分布,主要阔叶乔木幼苗与大树在空间上呈正相关,主要针叶乔木幼苗与大树在空间上呈负相关。

       

      Abstract:
      ObjectiveThis paper is to understand the species composition and spatial distribution of tree seedlings in a coniferous and broadleaved mixed forest in Changbai Mountain of northeastern China. It may provide a theoretical basis for management.
      MethodBased on a permanent plot in the coniferous and broadleaved mixed forest and continuously field survey tree seedlings and adult trees within 1 ha, we analyzed species composition and spatial distribution of typical coniferous tree and broadleaved tree seedlings. The relationship of spatial distribution between seedlings and adult trees was further researched.
      ResultThe results showed that:(1) a total of 17 tree species were recorded in this plot which was consistent with the composition of adult trees, and there were 10 865 tree seedlings recorded; (2) seedlings of typical coniferous trees(Pinus koraiensis, Abies nephrolepis)and broadleaved trees(Fraxinus mandshurica, Tilia amurensis)were characterized by clumped distribution on the scales less than certain critical points; (3)the spatial distribution of F. mandshurica and T. amurensi's seedlings was positively correlated with their adult trees, while that of P. koraiensis and A. nephrolepi's seedlings was negatively correlated with their adult trees.
      ConclusionAll above, in the coniferous and broadleaved mixed forest, spatial distribution of typical coniferous tree and broadleaved tree seedlings showed clumped distribution, and the typical broadleaved tree seedlings were positively correlated with their adult trees while the typical coniferous tree seedlings showed negative correlations with their adult trees.

       

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