Prediction of photosynthesis in Scots pine ecosystems across Europe by a needle-level theory

Photosynthesis provides carbon for the synthesis of macromolecules to construct cells during growth. This is the basis for the key role of photosynthesis in the carbon dynamics of ecosystems and in the biogenic CO2 assimilation. The development of eddy-covariance (EC) measurements for ecosystem CO2 fluxes started a new era in the field studies of photosynthesis. However, the interpretation of the very variable CO2 fluxes in evergreen forests has been problematic especially in transition times such as the spring and autumn. We apply two theoretical needle-level equations that connect the variation in the light intensity, stomatal action and the annual metabolic cycle of photosynthesis. We then use these equations to predict the photosynthetic CO2 flux in five Scots pine stands located from the northern timberline to Central Europe. Our result has strong implications for our conceptual understanding of the effects of the global change on the processes in boreal forests, especially of the changes in the metabolic annual cycle of photosynthesis.

Noe, SteffenEstonian University of Life Sciences - EMÜ (author)
Dengel, SigridLawrence Berkeley National Laboratory (author)
Elbers, JanWageningen University (author)
Gielen, BertUniversity of Antwerp (author)
Kerminen, Veli MattiUniversity of Helsinki (author)
Kruijt, BartWageningen University (author)
Kulmala, LiisaUniversity of Helsinki (author)
Lindroth, AndersLund University,Lunds universitet,Institutionen för naturgeografi och ekosystemvetenskap,Naturvetenskapliga fakulteten,Dept of Physical Geography and Ecosystem Science,Faculty of Science(Swepub:lu)ngeo-ali (author)
Mammarella, IvanUniversity of Helsinki (author)
Petäjä, TuukkaUniversity of Helsinki (author)
Schurgers, GuyUniversity of Copenhagen(Swepub:lu)nate-gse (author)
Vanhatalo, AnniUniversity of Helsinki (author)
Kulmala, MarkkuUniversity of Helsinki (author)
Bäck, JaanaUniversity of Helsinki (author)
University of HelsinkiEstonian University of Life Sciences - EMÜ (creator_code:org_t)

In:Atmospheric Chemistry and Physics: Copernicus GmbH18:18, s. 13321-133281680-73161680-7324

By the author/editor: Hari, Pertti; Noe, Steffen; Dengel, Sigrid; Elbers, Jan; Gielen, Bert; Kerminen, Veli M ...; show more...; Kruijt, Bart; Kulmala, Liisa; Lindroth, Anders; Mammarella, Ivan; Petäjä, Tuukka; Schurgers, Guy; Vanhatalo, Anni; Kulmala, Markku; Bäck, Jaana; show less...

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Earth and Relate ...; and Meteorology and ...

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.