Structure, composition and species diversity in an altitude-substrate matrix of rain forest tree communities on Mount Kinabalu, Borneo
Structure, composition and species diversity in an altitude-substrate matrix of rain forest tree communities on Mount Kinabalu, Borneo
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DOI：
10.1023/a:1009710618040
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发表时间：
1999-02-01
期刊：
影响因子：
1.7
通讯作者：
Kitayama, K
中科院分区：
文献类型：
--
作者：
Aiba, S;Kitayama, K
我们研究了森林结构，组成和树种多样性的8个地块的环境矩阵的四个海拔高度（700，1700，2700和3100米）和两种类型的地质基质（超基性岩和非超基性岩）的神山，婆罗洲。在这两个基质系列，森林的高度，平均叶面积和树种多样性（大于或等于4.8厘米，大于或等于10厘米的胸径[胸径]）随海拔高度下降。两个森林在不同的基质系列相似，在700米的结构，属和科组成和树种多样性，但随着海拔的增加变得不一样。在高度的下降是陡峭的超碱性基质比非超碱性基质，树种多样性一般低于超碱性基质比非超碱性基质大于或等于1700米。在海拔较高的非超碱性基质和超碱性基质在海拔较低的森林是相似的胸径与树高异速生长，平均叶面积，属和科组成大于或等于1700米。森林结构和组成之间的两个衬底系列的这些对比模式表明，海拔变化被压缩的超基性衬底相比，非超基性衬底。树种多样性与最大树高和估计地上生物量相关，但与断面积无关。我们认为，具有较高的树种多样性的森林的特点是更大的生物量分配到高度生长相对于树干直径的增长下，更富有成效的环境比低树种多样性的森林。
We studied forest structure, composition and tree species diversity of eight plots in an environmental matrix of four altitudes (700, 1700, 2700 and 3100 m) and two types of geological substrates (ultrabasic and non-ultrabasic rocks) on Mount Kinabalu, Borneo. On both substrate series, forest stature, mean leaf area and tree species diversity (both greater than or equal to 4.8 cm and greater than or equal to 10 cm diameter at breast height [dbh]) decreased with altitude. The two forests on the different substrate series were similar at 700 m in structure, generic and familial composition and tree species diversity, but became dissimilar with increasing altitude. The decline in stature with altitude was steeper on the ultrabasic substrates than on the non-ultrabasic substrates, and tree species diversity was generally lower on ultrabasic substrates than on non-ultrabasic substrates at greater than or equal to 1700 m. The forests on non-ultrabasic substrates at higher altitudes and those on ultrabasic substrates at the lower altitudes were similar in dbh versus tree height allometry, mean leaf area, and generic and familial composition at greater than or equal to 1700 m. These contrasting patterns in forest structure and composition between the two substrate series suggested that altitudinal change was compressed on the ultrabasic substrates compared to the non-ultrabasic substrates. Tree species diversity was correlated with maximum tree height and estimated aboveground biomass, but was not with basal area, among the eight study sites. We suggest that forests with higher tree species diversity are characterized by greater biomass allocation to height growth relative to trunk diameter growth under more productive environment than forests with lower tree species diversity.