Spatio-temporal variations in photosynthesis.
Spatio-temporal variations in photosynthesis.
复制标题
光合作用的时空变化。
DOI：
10.1007/s10265-016-0814-3
复制
发表时间：
2016
影响因子：
2.8
通讯作者：
Muraoka H
中科院分区：
文献类型：
--
作者：
Terashima I;Tang;YH;Muraoka H
© The Botanical Society of Japan and Springer Japan 2016通过一个非常简单的Beer-Lambert方程，只有两个参数，叶面积指数F（或LAI）和吸收系数k。F定义为从冠层顶部到冠层中任意平面的累积叶面积除以地面面积。该平面可以是地面;由此获得的针对树冠中所有叶子的F，Ftot，是代表叶子树冠的参数。k是与叶片倾斜度相关的常数，并且对于表征叶冠也很重要，如下面简要解释的。有关Monsi-Saeki理论前后研究领域的历史概述，请参见Monsi et al. Monsi-Saeki的成功依赖于他们简单的假设。他们把林冠看作是一个由具有相同倾角的随机分布在林冠中的小叶组成的集合体。让我们假设这样一个树冠中的每一片叶子都有一个面积s，并且是水平的，高于地面的面积为S。然后，冠层中顶叶下方的平均光强度I1可以表示为：
© The Botanical Society of Japan and Springer Japan 2016 by one very simple Beer-Lambert equation with only two parameters, the leaf area index, F (or LAI), and the absorption coefficient, k. F is defined as the cumulative leaf area from the canopy top to an arbitrary plane in the canopy divided by the ground area. This plane can be the ground surface; F thus obtained for all the leaves in the canopy, Ftot, is a parameter representing the leaf canopy. k is a constant related to leaf inclination and is also important for characterizing the leaf canopy as is briefly explained below. For historical overviews of the research field before and after the Monsi-Saeki theory, see Monsi et al.(1973) and Hirose (2005).The success of the Monsi-Saeki relies on their simple assumptions. They treated as a leaf canopy as an assembly of small leaves that have the identical inclinations and are distributed randomly in the canopy. Let us assume that each of the leaves in such a canopy has an area of s and is horizontal and above the ground area of S. Then, the average light intensity below the top leaf, I1, in the canopy can be expressed as