Stand and self-thinning dynamics in natural Abies stands in northern Hokkaido, Japan
Stand and self-thinning dynamics in natural Abies stands in northern Hokkaido, Japan
复制标题
日本北海道北部天然冷杉林的林分和自我疏伐动态
DOI：
10.1111/j.1440-1703.2004.00639.x
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发表时间：
2004
影响因子：
2
通讯作者：
K. Matsuda
中科院分区：
文献类型：
--
作者：
M. Shibuya;Norikuni Haga;T. Sasaki;S. Kikuchi;M. Haruki;M. Noda;Kunihide Takahashi;K. Matsuda
对日本北方北海道沙丘上生长的高山冷杉（Abies sachalinensis）天然林分进行了林分动态和自疏与地上生物量动态的关系分析。这样做是为了检查波型再生的立场。52个地块建立在几乎纯冷杉林，范围从树苗到成熟和崩溃的生长阶段。地面生物量和树高达到渐近水平之前的崩溃阶段，不像波再生冷杉站在日本中部和北美。林分密度在幼林生长阶段较高，但自疏率，即研究林分中每生物量增长的密度下降大于日本中部的波浪再生林分，如大的自疏指数所示（约化主轴回归为-1.26）。树高分布范围窄，垂直结构为典型的单层结构。除幼林外，林木的细长比都很大。在成熟林分和倒伐林分中，超前苗密度显著增加。这些立场和树木的特点被认为是与波型再生的研究立场，它是假设盛行风影响树死亡率。
Stand dynamics and self-thinning were analyzed in relation to the dynamics of above-ground biomass in natural Abies sachalinensis stands growing on sand dunes in northern Hokkaido, Japan. This was done in order to examine wave-type regeneration in the stands. Fifty-two plots were established in almost pure Abies stands that ranged from saplings to the mature and collapsing growth stages. Above-ground biomass and tree height reached asymptotic levels prior to the collapsing phase, unlike wave-regeneration Abies stands in central Japan and North America. Stand density was high in the young growth stages, but the self-thinning rate, that is, the density decrease per biomass growth in the study stands was greater than in wave-regeneration stands in central Japan, as indicated by a large self-thinning exponent (−1.26 by reduced major axis regression). The range of tree height distribution was very narrow, and the stands’ vertical structure was typically single-layered. The slenderness ratio of trees was large, except in young stands. In mature and collapsing stands, advanced seedling density increased markedly. These stand and tree characteristics were considered to be correlated with the wave-type regeneration in the study stands, and it is assumed that prevailing winds affect tree mortality.