Full text of this article is only available in PDF format.

Pauline Oker-Blom (email)

Photosynthetic radiation regime and canopy structure in modeled forest stands

Oker-Blom P. (1986). Photosynthetic radiation regime and canopy structure in modeled forest stands. Acta Forestalia Fennica no. 197 article id 7643. https://doi.org/10.14214/aff.7643

Abstract

The relationship between canopy structure and photosynthetic radiation regime are studied in a theoretical basis. In modelling the canopy structure, a statistical approach is applied and the radiation field inside a stand is described in terms of random variables and their distribution. A comparison is made between horizontally homogenous stands and grouped forest stands in order to assess the influence of grouping of foliage on the irradiance distribution in a forest stand. Results show that grouping considerably reduces the interception of radiation and causes a large spatial variation. In coniferous stands the grouping of needles into shoots and the effect of penumbra are shown to have an important influence on the distribution of radiation on the needle area.

The PDF includes a summary in Finnish.

Keywords
spatial variation; radiation models; penumbra; grouping effect; photosynthetic radiation

Published in 1986

Views 2262

Available at https://doi.org/10.14214/aff.7643 | Download PDF

Creative Commons License CC BY-SA 4.0

Register
Click this link to register to Silva Fennica.
Log in
If you are a registered user, log in to save your selected articles for later access.
Contents alert
Sign up to receive alerts of new content

Your selected articles
Your search results
Smolander H., Kellomäki S. et al. (1990) The effect of nitrogen concentration on needle p.. Silva Fennica vol. 24 no. 1 article id 5414
Kellomäki S., Oker-Blom P. (1983) Canopy structure and light climate in a young Sc.. Silva Fennica vol. 17 no. 1 article id 5171
Kellomäki S., Oker-Blom P. (1981) Specific needle area of Scots pine and its depen.. Silva Fennica vol. 15 no. 2 article id 5116
Oker-Blom P., (1986) Photosynthetic radiation regime and canopy struc.. Acta Forestalia Fennica vol. 0 no. 197 article id 7643