GROWTH-PATTERN OF ABIES-MARIESII SAPLINGS UNDER CONDITIONS OF OPEN-GROWTH AND SUPPRESSION
GROWTH-PATTERN OF ABIES-MARIESII SAPLINGS UNDER CONDITIONS OF OPEN-GROWTH AND SUPPRESSION
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DOI：
10.1007/bf02489483
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发表时间：
1980-01-01
期刊：
影响因子：
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通讯作者：
KOHYAMA, T
中科院分区：
文献类型：
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作者：
KOHYAMA, T
分析了A.马利筋日本中部八岳山北方亚高山顶极森林的树苗[了解顶极森林如何再生]。侧枝与主干不仅在分枝习性和针叶排列上有所区别，而且在干物质分配、茎杆细长度和针叶寿命上也有所区别。在此基础上，讨论了干、侧枝对苗木物质生产函数的贡献。在抑制条件下，侧枝的生长性状表现出可塑性变化，以有效地扩大和维持同化系统。此外，与侧枝分支生长相比，树干生长受到抑制，侧枝间顶端优势减弱。这些生长习性导致了不同生境中幼树树冠形状的差异。讨论了这种生长模式对幼树的耐荫性和存活率以及森林的再生的适应意义。
The growth pattern was analyzed for A. mariesii Mast. saplings in the subalpine climax forests of the northern Yatsugatake Mountains, Central Japan [to understand how a climax forest regenerates]. The lateral branches were distinguished from the trunk not only with respect to the branching habits and needle arrangement but also with respect to the distribution of dry matter to needles, the slenderness of shoot-stem and the longevity of needles on them. Based on these differences, the contribution of the trunk and lateral branches to the matter production function of saplings is discussed. The lateral branches showed plastic changes in their growth characters to expand and maintain an assimilation system effectively, under conditions of suppression. In addition, the trunk growth was inhibited compared with the lateral branch growth and the apical dominance among lateral branches was weakened in the suppressed saplings. These growth habits resulted in the observed difference in the crown shape of saplings in the different habitats. Arguments are presented regarding the adaptive meanings of such a growth pattern for the shade tolerance and survival of the saplings and for the regeneration of the forest.