Articles | Volume 17, issue 24
https://doi.org/10.5194/acp-17-15045-2017
https://doi.org/10.5194/acp-17-15045-2017
Research article
 | 
20 Dec 2017
Research article |  | 20 Dec 2017

Annual cycle of Scots pine photosynthesis

Pertti Hari, Veli-Matti Kerminen, Liisa Kulmala, Markku Kulmala, Steffen Noe, Tuukka Petäjä, Anni Vanhatalo, and Jaana Bäck

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Latest update: 24 Apr 2024
Short summary
We developed a theory on the seasonal behaviour of photosynthesis in natural conditions and tested the theory with intensive measurements. Light, temperature, water vapor and CO2 concentration explained the daily variation in photosynthesis, and the physiological state of the photosynthetic machinery explained the annual pattern of photosynthesis. The theory explained about 95 % of the variance of photosynthesis measured with chambers in the field in northern Finland.
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