EXTINCTION COEFFICIENTS FOR RADIATION IN PLANT CANOPIES CALCULATED USING AN ELLIPSOIDAL INCLINATION ANGLE DISTRIBUTION
EXTINCTION COEFFICIENTS FOR RADIATION IN PLANT CANOPIES CALCULATED USING AN ELLIPSOIDAL INCLINATION ANGLE DISTRIBUTION
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DOI：
10.1016/0168-1923(86)90010-9
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发表时间：
1986-04-01
影响因子：
6.2
通讯作者：
CAMPBELL, GS
中科院分区：
文献类型：
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作者：
CAMPBELL, GS
用于计算植物冠层辐射消光系数的方程要么过于简单，不能准确描述冠层辐射，要么过于复杂，计算不便。假设冠层中叶面积的角分布类似于长椭球或扁椭球表面上的面积分布，导出了一个方程。因此，这是一个概括的球形叶角分布，这是经常使用的植物冠层。模拟叶角分布产生的使用该模型密切接近测量的植物冠层的叶角分布。消光系数从模型计算得到的值，这是几乎相同的计算使用六个叶角类。
Equations used to calculate extinction coefficients for radiation in plant canopies tend either to be too simple to describe canopy radiation accurately, or too complex for convenient computation. An equation has been derived using the assumption that the angular distribution of leaf area in a canopy is similar to the distribution of area on the surface of a prolate or oblate spheroid. This is, therefore, a generalization of the spherical leaf angle distribution which is frequently used for plant canopies. Simulated leaf angle distributions generated using this model closely approximate measured leaf angle distributions for plant canopies. Extinction coefficients calculated from the model give values which are virtually identical to those calculated using six leaf angle classes.