Habitat associations with topography and canopy structure of tree species in a tropical montane forest on Mount Kinabalu, Borneo
Habitat associations with topography and canopy structure of tree species in a tropical montane forest on Mount Kinabalu, Borneo
复制标题
DOI：
10.1023/b:vege.0000046059.92806.49
复制
发表时间：
2004-01-01
期刊：
影响因子：
1.7
通讯作者：
Takyu, M
中科院分区：
文献类型：
--
作者：
Aiba, S;Kitayama, K;Takyu, M
在婆罗洲京那巴鲁山2.74公顷的热带山地森林中，研究了42种丰富树种的生境与地形和冠层结构的关系。其中许多种属于同一高等类群，包括8科4属。直径大于或等于10 cm的树干的种内空间分布分析表明，28种（包括所有6种壳斗科植物）在100-m（2）和/或400-m（2）尺度上表现出聚集分布，20种通过环面平移检验显示出与地形的生境关联; 17种同时表现出这两种特征。物种与当地冠层结构的关联特征的冠层位置指数（CPI），这是相对于相邻的树木定义。直径为10-40厘米的单个茎的CPI差异很大，19个物种的树冠垂直暴露频率与树冠下阴影的频率显着不同。在10-40厘米直径和大小分布的物种的平均增长率与地形协会，但解释了与冠层结构的协会，更暴露的树冠生长更快，有较少的正偏态分布的物种。桃金娘科2属（蒲桃属和拟三甲属）及各属种间生境关联多样性明显，其它科2属（藤黄属和石栎属）生境关联多样性不明显。
Habitat associations with topography and canopy structure of 42 abundant tree species were studied in a 2.74-ha plot of tropical montane forest on Mount Kinabalu, Borneo. Many of these species belong to the same higher taxa including eight families and four genera. Analysis of intraspecific spatial distributions for stems greater than or equal to 10 cm diameter revealed that 28 species (including all six species of Fagaceae) showed aggregated distributions at the 100-m(2) and/or 400-m(2) scales, and that 20 species showed habitat associations with topography by torus-translation tests; 17 species showed both characteristics. Species' associations with the local canopy structure were characterized by crown position index (CPI), which was defined relative to neighbour trees. The CPI differed greatly among individual stems at 10-40 cm diameter, and 19 species showed significantly different frequencies of crowns exposed vertically versus those shaded beneath the canopy. Mean growth rates at 10-40 cm diameter and size distributions of species were not related to topographic associations, but were explained by the associations with canopy structure; species with more exposed crowns grew faster and had less positively skewed distributions. Diversity in habitat associations was manifest between two genera (Syzygium and Tristaniopsis) in the family Myrtaceae and among species in these genera, but was less evident in other families and two genera (Garcinia and Lithocarpus).