Successional change of forest pattern along topographical gradients in warm-temperate mixed forests in Mt Kiyosumi, central Japan
Successional change of forest pattern along topographical gradients in warm-temperate mixed forests in Mt Kiyosumi, central Japan
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日本中部清澄山暖温带混交林森林格局沿地形梯度的演替变化
DOI：
10.1007/bf02347848
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发表时间：
1995
影响因子：
2
通讯作者：
M. Ohsawa
中科院分区：
文献类型：
--
作者：
Kemurio Ozaki;M. Ohsawa
森林模式沿着地形梯度进行了比较，在第二和古老的森林流域，在暖温带的日本中部的清澄山。根据不同的地形生境类型，各流域可划分出3种群落类型，即以冷杉、铁杉为主的针叶林，以锐叶栎、青冈为主的万年青阔叶林。落叶林主要以大叶黄杨和山茱萸为主。各地形群落类型的β多样性和独特性随次生演替的进行而增加。针叶树和万年青阔叶树，这是相互混合的山脊和斜坡上的第二次增长的分水岭，反过来又限制在山脊和斜坡生境类型，分别在旧的增长分水岭。这种分化的过程可以解释的针叶树的连续更新的山脊网站，和它的缺席，由于不同的光照条件所造成的万年青树木的树冠逐渐关闭的斜坡网站上的老增长的分水岭。在山谷型生境中，频繁的土壤扰动（如滑坡和土壤蠕动）阻碍了演替后期万年青乔木的持续生长，因此演替或先锋落叶乔木可以在生境中持续存在。
Forest patterns along topographical gradients were compared between second- and old-growth forested watersheds in a warm-temperate zone of Mt Kiyosumi, central Japan. Three community types were distinguished depending on the topographical habitat type in each watershed, for example, conifer forest was dominated byAbies firmaandTsuga sieboldiion ridge sites, evergreen broad-leaved forest was dominated byQuercus acuta, Q. salicinaandCastanopsis cuspidatavar.sieboldiion slope sites, and deciduous forest was dominated byEuptelea polyandraandCornus controversain valley sites. Beta diversity and distinctiveness of each topographical community type increased with progression of secondary succession. Conifers and evergreen broad-leaved trees, which were intermingled with each other on ridges and slopes of the second-growth watershed, were in turn restricted to the ridge and slope habitat type, respectively, in the old-growth watershed. The process of this differentiation can be explained by the continuous regeneration of conifers on ridge sites, and its absence on slope sites due to different light conditions caused by progressive canopy closure of evergreen trees on the slope sites toward the old-growth watershed. In the valley type habitat, frequent soil disturbance, such as landslides and soil creep, hinder the continuous growth of late successional evergreen trees, and thus seral or pioneer deciduous trees can persist in the habitat.
DOI：
10.1007/bf00033897
发表时间：
1991-12
期刊：
Vegetatio
影响因子：
--
作者：
Masahiko Ohsawa
通讯作者：
Masahiko Ohsawa