Spatial structure and regeneration of Tetramerista glabra in peat swamp rain forest in Indonesian Borneo
Spatial structure and regeneration of Tetramerista glabra in peat swamp rain forest in Indonesian Borneo
复制标题
印尼婆罗洲泥炭沼泽雨林光四聚体的空间结构与更新
DOI：
10.1023/a:1009771519028
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发表时间：
1997
期刊：
影响因子：
1.7
通讯作者：
D. Peart
中科院分区：
文献类型：
--
作者：
D. Gavin;D. Peart
本文研究了印度尼西亚婆罗洲（西加里曼丹）泥炭沼泽雨林的优势冠层乔木——大叶Tetramerista glabra的空间结构和更新情况。光斑草具有较强的空间结构，且在生命周期中变化剧烈；幼苗高度聚集，树苗随机分布，乔木均匀分布。林隙内萌发率和幼苗相对生长率最高，但林隙边缘的幼苗密度最高。青苗斑块的形成主要是由于幼苗集中在林隙边缘，而不是局部的种子扩散。相对生长率与幼苗高度关系的斜率从林隙、林隙边缘到林下生境依次递减，表明林隙中幼苗层内的竞争比林下竞争更重要。破坏幼苗聚集的过程，导致树木的过度分散，一定是密度依赖的，但仍然未知。
We examined the spatial structure and regeneration of Tetramerista glabra, a dominant canopy tree in peat swamp rain forest in Borneo (West Kalimantan, Indonesia). T. glabra has strong spatial structure that changes dramatically during the life cycle; seedlings were highly aggregated, saplings were random and trees were evenly distributed. Germination and seedling relative growth were highest within canopy gaps, but seedling densities were highest at gap edges. Concentration of seedlings in gap edges, rather than localized seed dispersal, was responsible for seedling patchiness. The slope of the relationship between relative growth rate and seedling height decreased from gap, to gap edge to understory habitats, suggesting that competition within the seedling layer is more important in gaps than in the understory. The processes that break down seedling aggregation, leading to over-dispersion of trees, must be density dependent, but remain unknown.