LEAF DISPLAY, CANOPY STRUCTURE, AND LIGHT INTERCEPTION OF TWO UNDERSTORY PALM SPECIES
LEAF DISPLAY, CANOPY STRUCTURE, AND LIGHT INTERCEPTION OF TWO UNDERSTORY PALM SPECIES
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两种林下棕榈树种的叶子显示、冠层结构和光截取
DOI：
10.1002/j.1537-2197.1985.tb08412.x
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发表时间：
1985
影响因子：
3
通讯作者：
R. Chazdon
中科院分区：
文献类型：
--
作者：
R. Chazdon
叶的大小，叶显示和冠的大小，全植物光截获的影响进行了研究，在Geonoma cuneata和Asterogyne martiana，原产于中美洲雨林的林下棕榈物种。成年人A。与G. martiana相比，G. martiana的叶片长，单株叶片数多，总叶面积大。楔叶类成虫整个树冠内的几何测量用于计算树冠的光截获。光截获效率在成虫中较高。cuneata比A. 2种植物幼苗的光截获效率差异不显著。成虫的效率降低。martiana冠主要是由于悬垂叶比例增加。成年人A。光截获能力（光截获效率与总叶面积的乘积）较大，但光截获的生物量成本较高。光截获在成年G的生物量成本较低。cuneata使这个物种能够成功地利用雨林林下最深的阴影微型网站。- 作者;
The implications of leaf size, leaf display and crown size for whole-plant light interception were investigated in Geonoma cuneata and Asterogyne martiana, understory palm species native to Central American rain forests. Adults of A. martiana had longer leaves, more leaves per plant, and greater total leaf area than G. cuneata adults. Geometric measurements within whole crowns were used to calculate light interception by a crown. Light interception efficiency was higher in adult G. cuneata than in adult A. martiana; seedlings of the 2 species did not differ significantly in light interception efficiency. Decreased efficiency of adult A. martiana crowns was largely due to an increased proportion of pendent leaves. Adults of A. martiana had greater light interception capacity (the product of light interception efficiency and total leaf area), but they also had higher biomass costs of light interception. Lower biomass costs of light interception in adult G. cuneata enable this species to exploit successfully the most deeply shaded microsites in the rain forest understory. -Author; ;