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Abstract

The propagation of light in a typical dicotylon leaf is in investigated with a new Monte Carlo ray tracing model. The three-dimensional internal cellular structure of the various leaf tissues, including the epidermis, the palisade parenchyma and the spongy mesophyll, is explicitly described. Cells of different tissues are assigned appropriate morphologies and contain realistic amounts of water and chlorophyll. Each cell constituent is characterized by an index of refraction and absorption coefficient. The objective of this work is to investigate how the internal three-dimensional structure of the tissues and the optical properties of cell constituents control the reflectance and transmittance of the leaf. Model results compare favourably with laboratory observations. The influence of the roughness of the epidermis on the reflection and absorption of light is investigated, and simulation results confirm that convex cells in the epidermis focus light on the palisade parenchyma and increase the absorption of radiation.

Additional information

Authors: GOVAERTS Y M, JRC Ispra (IT);VERSTRAETE M M, University of California, Department of Land, Davis (US);JACQUEMOUD S, ;USTIN S L,
Bibliographic Reference: Article: Applied Optics
Record Number: 199610235 / Last updated on: 1996-03-18
Category: PUBLICATION
Original language: en
Available languages: en