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

Tuula Aalto (email), Pertti Hari, Timo Vesala

Comparison of an optimal stomatal regulation model and a biochemical model in explaining CO2 exchange in field conditions

Aalto T., Hari P., Vesala T. (2002). Comparison of an optimal stomatal regulation model and a biochemical model in explaining CO2 exchange in field conditions. Silva Fennica vol. 36 no. 3 article id 529. https://doi.org/10.14214/sf.529

Abstract

Gas exchange of Pinus sylvestris L. was studied in subarctic field conditions. Aspects on optimal control of the gas exchange were examined using approach by Hari et al. (Tree Phys. 2: 169–175, 1986). Biochemical model by Farquhar et al. (Planta 149: 78–90, 1980) was utilized to describe the photosynthetic production rate of needles. The model parameters were determined from field measurements. The results from the optimization approach and biochemical model were compared and their performance was found quite similar in terms of R2 calculated using measured exchange rates (0.89 for optimization model and 0.85 for biochemical model). Minor differences were found in relation to responses to intercellular carbon dioxide concentration and temperature.

Keywords
photosynthesis; Scots pine; optimization; Pinus sylvestris L.; CO2 exchange; biochemical model

Author Info
  • Aalto, Finnish Meteorological Institute, Air Quality Research, Sahaajankatu 20 E, FIN-00810 Helsinki, Finland E-mail tuula.aalto@fmi.fi (email)
  • Hari, University of Helsinki, Dept. of Forest Ecology, P.O. Box 27, FIN-00014 University of Helsinki, Finland E-mail ph@nn.fi
  • Vesala, University of Helsinki, Dept. of Physics, P.O. Box 64, FIN-00014 University of Helsinki, Finland E-mail tv@nn.fi

Received 3 October 2000 Accepted 3 April 2002 Published 31 December 2002

Views 3766

Available at https://doi.org/10.14214/sf.529 | 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
Beuker E., Kellomäki S. et al. (1996) Changes in wood production of Picea abies and Pi.. Silva Fennica vol. 30 no. 2–3 article id 5591
Hänninen H., Kellomäki S. et al. (1996) Overwintering and productivity of Scots pine in .. Silva Fennica vol. 30 no. 2–3 article id 5590
Palomäki V., Holopainen T. et al. (1996) First-year results on the effects of elevated at.. Silva Fennica vol. 30 no. 2–3 article id 5580
Hänninen H., Pelkonen P. (1988) Effects of temperature on dormancy release in No.. Silva Fennica vol. 22 no. 3 article id 5357
Pukkala T., (1987) Model for predicting the seed crop of Picea abie.. Silva Fennica vol. 21 no. 2 article id 5311
Kärkkäinen M., (1986) Model of knottiness of wood material in pine, sp.. Silva Fennica vol. 20 no. 2 article id 5266
Hari P., Kanninen M. et al. (1979) An automatic system for measurements of gas exch.. Silva Fennica vol. 13 no. 1 article id 5019
Luukkanen O., (1973) Observations on CO2 exchange in open pollinated .. Silva Fennica vol. 7 no. 4 article id 4888
Kuehne C., McLean J. P. et al. (2022) A stand-level growth and yield model for thinned.. Silva Fennica vol. 56 no. 1 article id 10627
Pikkarainen L., Luoranen J. et al. (2020) Comparison of planting success in one-year-old s.. Silva Fennica vol. 54 no. 1 article id 10243
Egbäck S., Nilsson U. et al. (2017) Modeling early height growth in trials of geneti.. Silva Fennica vol. 51 no. 3 article id 5662
Pukkala T., Miina J. et al. (2002) Thinning response and thinning bias in a young S.. Silva Fennica vol. 36 no. 4 article id 524
Aalto T., (1998) Carbon dioxide exchange of Scots pine shoots as .. Silva Fennica vol. 32 no. 4 article id 674