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首页> 外文期刊>Ecological research >Establishment And Growth Pattern Of Pinus Pumila Under A Forest Canopy In Central Kamchatka
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Establishment And Growth Pattern Of Pinus Pumila Under A Forest Canopy In Central Kamchatka

机译：堪察加半岛中部森林冠层下松树的建立与生长模式

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摘要

We investigated the spatial distribution and growth of the Siberian dwarf pine (Pinus pumila) in a valley-foothill larch-birch (Larix cajanderi-Betula platyphylla as canopy trees) mixed forest of fire origin located in central Kamchatka with the aim of elucidating the ecological features of P. pumila when it is an undergrowth species in a forest. The spatial distribution of all individuals of all tree species was clumped, and the spatial distribution of the two canopy tree species did not repulsively affect that of P. pumila (i.e., its establishment site). These results suggest that the regeneration of P. pumila does not depend on canopy gaps. However, the analysis using a growth model indicated that the canopy trees negatively affected the growth of P. pumila and that the negative effect of L. cajanderi on P. pumila growth was stronger than that of B. platyphylla. The direction of the crown extension of P. pumila was weakly related to the open-space direction. Our results suggest that, although the spatial pattern of establishment of P. pumila is not repulsed by the distribution of canopy trees, the crown can spread horizontally toward the more sparsely populated areas of the canopy trees where they may have higher growth rates.
机译：我们研究了位于堪察加半岛中部的火源谷地-山麓落叶松-桦木（Larix cajanderi-Betula platyphylla作为冠层树）混合林中西伯利亚矮松（Pinus pumila）的空间分布和生长。 P. pumila的特征，当它是森林中的灌木丛植物时。所有树种的所有个体的空间分布都是成簇的，并且两个冠层树种的空间分布不会对P. pumila（即其栖息地）的空间产生排斥作用。这些结果表明P. pumila的再生不取决于冠层间隙。但是，使用生长模型进行的分析表明，冠层树对P. pumila的生长具有负面影响，而L. cajanderi对P. pumila的生长的负面影响要强于白桦。 P. pumila的树冠延伸方向与开放空间方向关系不大。我们的研究结果表明，尽管树冠层的分布并没有阻碍建立P. pumila的空间格局，但树冠可以向着树冠层较稀疏的区域水平扩散，在那里它们可能具有较高的生长速度。

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