Species habitat associations in an old-growth beech forest community organised by landslide disturbances
Species habitat associations in an old-growth beech forest community organised by landslide disturbances
复制标题
由山体滑坡扰动组织的古老山毛榉森林群落中的物种栖息地协会
DOI：
10.1080/13416979.2017.1396418
复制
发表时间：
2018
影响因子：
1.5
通讯作者：
D. Higaki
中科院分区：
文献类型：
--
作者：
T. Torimaru;S. Akada;K. Ishida;Machiko Narita;D. Higaki
摘要：为了解滑坡影响森林群落树种与生境空间关联的过程，研究了滑坡影响森林群落中6种主要树种的生境关联。在1.14 ha的多边形样地上绘制胸高直径≥5cm的所有茎，并评估地形条件（坡度和凹凸度）、冠层状态和森林地面植被（即矮竹和蕨类植被）。油麻和日本槭的大部分茎和倒伏玉兰的许多茎位于低蕨类盖度的立地，而倒伏玉兰的许多茎位于矮竹盖度高的立地。两种槭属树冠层和最低层的位置与地形凹凸的地点一致。冠层以下的七叶树茎多分布在坡度平缓的立地，而栎的茎多分布在坡度陡的立地。虽然结果表明，作为滑坡顶坡的陡坡为遮荫性较差的物种提供了适宜的栖息地，但应该注意的是，不同层间的栖息地关联模式很少一致。我们的研究结果表明，具有不同强度和空间尺度的不可预测的零星滑坡干扰及其递归性至少是森林群落中观察到的栖息地关联模式的部分原因。
ABSTRACT In order to understand the processes that govern tree species’ spatial associations with habitats in landslide-affected forest communities, we investigated the habitat associations of six major tree species in an old-growth beech forest community located on a steep flank slope where landslides had occurred. All stems ≥ 5cm in diameter at breast height were mapped on a 1.14 ha polygonal plot and the topographic conditions (slope inclination and convexity), canopy state, and forest floor vegetation (i.e. dwarf bamboo and fern cover) were assessed. Most stems of Fagus crenata and Acer japonicum as well as many stems of Magnolia obovata belonging to the canopy layer were located on sites with low fern cover, whereas many stems of M. obovata below the canopy layer were associated with sites having high dwarf bamboo cover. The locations of the two Acer species belonging to the canopy and lowest layers coincided with sites having convex topography. Stems of Aesculus turbinata below the canopy layer were generally found on sites with gentle slopes, whereas most stems of Quercus crispula coincided with steeply sloping sites. While the results demonstrate that steep slopes created as landslide headscarps provide suitable habitats for species with less shade tolerance, it should be noted that there were few consistent patterns of habitat association across the layers. Our results suggest that unpredictable sporadic landslide disturbances with varying intensities and spatial scales, and their recursiveness, are at least partly responsible for habitat association patterns observed in the forest community.
影响因子：
0.7
作者：
T. Yamakura
通讯作者：
T. Yamakura
日本北部北海道范围最北边界的偏远孤立山青冈森林的初始建立和再生过程
影响因子：
1.7
作者：
Namikawa;K.、Matsui;T.、Kobayashi;M.、Goto;R.、Kuramoto;S.
通讯作者：
S.