期刊
TREE PHYSIOLOGY
卷 28, 期 11, 页码 1601-1608出版社
OXFORD UNIV PRESS
DOI: 10.1093/treephys/28.11.1601
关键词
Carapa guianensis; hydraulic model; leaf area; leaf biomass; Pentaclethra macroloba; pipe-model theory; sapwood area; specific leaf area; Tetragastris panamensis; Virola koshnii; Vochysia ferruginea
类别
资金
- Instituto Technologico de Costa Rica
- Organization for Tropical Studies
- NASA National Space Technology Laboratory
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.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据