Structure of primary Japanese beech (Fagus japonica maxim.) forests in the Chichibu Mountains, central Japan, with special reference to regeneration processes
Structure of primary Japanese beech (Fagus japonica maxim.) forests in the Chichibu Mountains, central Japan, with special reference to regeneration processes
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日本中部秩父山脉日本山毛榉 (Fagus japonica maxim.) 原始森林的结构，特别是再生过程
DOI：
10.1007/bf02346933
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发表时间：
1988
影响因子：
2
通讯作者：
T. Hamaya
中科院分区：
文献类型：
--
作者：
T. Ohkubo;M. Kaji;T. Hamaya
对秩父山3种水青冈（Fagusjaponica）原始林分的区系组成、结构和动态进行了研究。在样方中，以日本杨占优势[RD（%）：64.9-87.0]，胸径级分布呈略倒J形[冠层干数（H> 20 m）：87-138/ha]。F.各粒级的粳稻均呈群体状分布，几乎均匀散布，且呈正相关排列。对形成菌落的茎组基部的详细检查显示，它们中的大多数来自死亡的母茎基部，并且它们来自普通粪便[每个粪便的大茎（H>10 m）数量：6-11]。在观察到的6个主要林隙中，只有一个林隙包括从F. japonicastools，而所有其他的都是由除F.日本的。树木倒下后，有几棵树下。japonicastems仍然存在。因此，在这些林分的冠层间隙恢复，通过发芽的numberingF。japonicastools或F. japonicaindividuals相邻的差距。然而，当林隙中心与矮秆中心之间的距离超过树冠矢量时，仅用新芽填充林隙被认为是困难的。这些未被新芽完全占据的地方将被其他树冠和/或树冠下物种的个体填充。
The floristic composition, structure and dynamics of three primaryFagus japonicastands were investigated in the Chichibu Mountains.F. japonicawas dominant [RD(%): 64.9–87.0] and showed a slightly inverse J‐shaped DBH class distribution in the quadrats [No. of canopy stems (H>20m): 87–138/ha]. The stems ofF. japonicafor each size were distributed in the form of colonies, being scattered almost uniformly, and arranged in positive association with each other. Detailed examination of the bases of the stem groups forming colonies revealed that most of them originated from the bases of dead mother stems and that they were from common stools [No. of large stems (H>10 m) per stool: 6–11]. Among six major canopy gaps observed, only one included stems sprouting from the outer part ofF. japonicastools, while all the others were occupied by individuals of species other thanF. japonica. After tree‐fall, several undercanopyF. japonicastems remained. Thus canopy gaps in these forest stands recovered through the sprouting of remainingF. japonicastools or by new sprouting ofF. japonicaindividuals adjacent to the gaps. However, it was considered difficult to fill canopy gaps only with sprouts when the distance between the center of a gap and that of a stool surpasses the crown vector. Such places that are not fully occupied by sprouts will be filled by individuals of other canopy and/or under‐canopy species.