Application of a Coupled Photosynthesis–Stomatal Conductance Model to Analysis of Carbon Assimilation by Spruce and Larch Trees in the Forests of Russia

Application of a Coupled Photosynthesis–Stomatal Conductance Model to Analysis of Carbon... Photosynthetic activities of common spruce (Picea abies (L.) Karst.) and Dahurian larch (Larix gmelinii (Rupr) Rupr ex Kuzen) were analyzed on the basis of datasets obtained for 110- to 130-year-old forest stands in Middle Russia and East Siberia. Using a Li-Cor 6200 gas analyzer, photosynthesis was measured in parallel with transpiration, stomatal conductance, CO2 concentrations in ambient air and intercellular spaces, the photosynthetically active radiation, air temperature, and air humidity. The data were examined within the framework of a biochemical model of photosynthesis of Farquhar et al. [1] in combination with the stomatal conductance model proposed by Jarvis [2]. The species-specific differences in carbon assimilation rates were discovered, and dependences of photosynthesis on the needle age, light regime, and growth conditions were revealed. The model parameters obtained were used to simulate the photosynthetic rates in spruce and larch trees at various weather conditions. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

Application of a Coupled Photosynthesis–Stomatal Conductance Model to Analysis of Carbon Assimilation by Spruce and Larch Trees in the Forests of Russia

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Publisher
Springer Journals
Copyright
Copyright © 2004 by MAIK “Nauka/Interperiodica”
Subject
Life Sciences; Plant Sciences
ISSN
1021-4437
eISSN
1608-3407
D.O.I.
10.1023/B:RUPP.0000028675.55987.63
Publisher site
See Article on Publisher Site

Abstract

Photosynthetic activities of common spruce (Picea abies (L.) Karst.) and Dahurian larch (Larix gmelinii (Rupr) Rupr ex Kuzen) were analyzed on the basis of datasets obtained for 110- to 130-year-old forest stands in Middle Russia and East Siberia. Using a Li-Cor 6200 gas analyzer, photosynthesis was measured in parallel with transpiration, stomatal conductance, CO2 concentrations in ambient air and intercellular spaces, the photosynthetically active radiation, air temperature, and air humidity. The data were examined within the framework of a biochemical model of photosynthesis of Farquhar et al. [1] in combination with the stomatal conductance model proposed by Jarvis [2]. The species-specific differences in carbon assimilation rates were discovered, and dependences of photosynthesis on the needle age, light regime, and growth conditions were revealed. The model parameters obtained were used to simulate the photosynthetic rates in spruce and larch trees at various weather conditions.

Journal

Russian Journal of Plant PhysiologySpringer Journals

Published: Oct 18, 2004

References

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