Allometric relationships predicting foliar biomass and leaf area:sapwood area ratio from tree height in five Costa Rican rain forest species
Allometric relationships predicting foliar biomass and leaf area:sapwood area ratio from tree height in five Costa Rican rain forest species
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DOI：
10.1093/treephys/28.11.1601
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发表时间：
2008-11-01
期刊：
影响因子：
4
通讯作者：
Waring, R. H.
中科院分区：
文献类型：
--
作者：
Calvo-Alvarado, J. C.;McDowell, N. G.;Waring, R. H.
我们建立了异速生长方程来预测哥斯达黎加五种热带雨林树种的全树叶面积（A(1)）、叶生物量（M-1）和叶面积与树液面积比（A,:A,）。锦葵（豆科/锦葵），锦葵属植物。（苦楝科）；（紫苣苔科），紫苣苔属；（豆蔻科）和巴拿马四甲草（英文）Kuntze(橄榄科)。通过破坏性分析（n = 11-14株/种），我们观察到强非线性异速生长关系（r(2) >= 0.9），可以通过树干直径或胸围高度测量的A(1)或m(1)来预测A(1)或m(1)。线性关系不太准确。总体上，除五甲草外，胸高A1:A(s)随树高呈负增长趋势。所有树种的总A(1)值均随高度的增加而增加。在A(1)A(s)中，5个物种中有4个随着高度的增加而增加，这与形态学和解剖学适应之间的权衡假设是一致的，形态学和解剖学适应有利于通过边材支持的叶面积的变化来有效地流动，而形态学和解剖学适应则是由于需要快速响应冠层的光照间隙而施加的。
We developed allometric equations to predict whole-tree leaf area (A(1)), leaf biomass (M-1) and leaf area to sap-wood area ratio (A,:A,) in five rain forest tree species of Costa Rica: Pentaclethra macroloba (Willd.) Kuntze (Fabaceae/Mim), Carapa guianensis Aubl. (Meliaceae), Vochysia ferruginea Mart. (Vochysiaceae), Virola koshnii Warb. (Myristicaceae) and Tetragastris panamensis (Engl.) Kuntze (Burseraceae). By destructive analyses (n = 11-14 trees per species), we observed strong nonlinear allometric relationships (r(2) >= 0.9) for predicting A(1) or M-1 from stem diameters or A(s) measured at breast height. Linear relationships were less accurate. In general, A1:A(s) at breast height increased linearly with tree height except for Pentaclethra, which showed a negative trend. All species, however, showed increased total A(1) with height. The observation that four of the five species increased in A(1)A(s) with height is consistent with hypotheses about trade-offs between morphological and anatomical adaptations that favor efficient water flow through variation in the amount of leaf area Supported by sapwood and those imposed by the need to respond quickly to light gaps in the canopy.