A general law for direct sunlight penetration
| Autor: | Guy L. Curry, Don W. DeMichele, Darald J. Hartfiel, J.E. Mann |
|---|---|
| Rok vydání: | 1977 |
| Předmět: |
Statistics and Probability
Sunlight General Immunology and Microbiology Applied Mathematics Stochastic variation General Medicine Penetration (firestop) Poisson distribution General Biochemistry Genetics and Molecular Biology symbols.namesake Modeling and Simulation Law symbols Probability distribution Leaf size General Agricultural and Biological Sciences Mathematics |
| Zdroj: | Mathematical Biosciences. 34:63-78 |
| ISSN: | 0025-5564 |
| Popis: | Under the assumption that foliage area distributions may be adequately approximated by probability distributions, a general law for the prediction of direct sunlight penetration of crop canopies is derived. It is shown that the Poisson (Beer's) law is a special case of this more general law. Area and transect problems are treated, and stochastic variation in leaf sizes is considered. Numerical studies are presented which indicate that the Poisson law is not adequate in all cases for the prediction of sunlight penetration and that stochastic variation in leaf sizes is of less consequence than average leaf size and/or leaf-area index. |
| Databáze: | OpenAIRE |
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