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

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Hari , P , Noe , S , Dengel , S , Elbers , J , Gielen , B , Kerminen , V-M , Kruijt , B , Kulmala , L , Lindroth , A , Mammarella , I , Petaja , T , Schurgers , G , Vanhatalo , A , Kulmala , M & Back , J 2018 , ' Prediction of photosynthesis in Scots pine ecosystems across Europe by a needle-level theory ' , Atmospheric Chemistry and Physics , vol. 18 , no. 18 , pp. 13321-13328 . https://doi.org/10.5194/acp-18-13321-2018

Title: Prediction of photosynthesis in Scots pine ecosystems across Europe by a needle-level theory
Author: Hari, Pertti; Noe, Steffen; Dengel, Sigrid; Elbers, Jan; Gielen, Bert; Kerminen, Veli-Matti; Kruijt, Bart; Kulmala, Liisa; Lindroth, Anders; Mammarella, Ivan; Petaja, Tuukka; Schurgers, Guy; Vanhatalo, Anni; Kulmala, Markku; Back, Jaana
Other contributor: University of Helsinki, Ecosystem processes (INAR Forest Sciences)
University of Helsinki, Institute for Atmospheric and Earth System Research (INAR)
University of Helsinki, Department of Forest Sciences
University of Helsinki, Institute for Atmospheric and Earth System Research (INAR)
University of Helsinki, Institute for Atmospheric and Earth System Research (INAR)
University of Helsinki, Department of Forest Sciences
University of Helsinki, Institute for Atmospheric and Earth System Research (INAR)
University of Helsinki, Doctoral Programme in Atmospheric Sciences







Date: 2018-09-18
Language: eng
Number of pages: 8
Belongs to series: Atmospheric Chemistry and Physics
ISSN: 1680-7316
DOI: https://doi.org/10.5194/acp-18-13321-2018
URI: http://hdl.handle.net/10138/246854
Abstract: 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.
Subject: GROSS PRIMARY PRODUCTION
STOMATAL CONDUCTANCE
EDDY COVARIANCE
ENERGY FLUXES
ANNUAL CYCLE
MODEL
CO2
FOREST
CARBON
TEMPERATURE
4112 Forestry
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