Articles | Volume 20, issue 14
https://doi.org/10.5194/bg-20-3119-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-20-3119-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
31 Jul 2023
Research article |
| 31 Jul 2023
| 31 Jul 2023
Potassium limitation of forest productivity – Part 2: CASTANEA-MAESPA-K shows a reduction in photosynthesis rather than a stoichiometric limitation of tissue formation
Université Paris-Saclay, CNRS, AgroParisTech, Ecologie Systématique et Evolution, 91405, Orsay, France
CIRAD, UMR Eco&Sols, 34398 Montpellier, France
Eco&Sols, Univ. Montpellier, CIRAD, INRAe, Institut Agro, IRD, Montpellier, France
Guerric le Maire
CIRAD, UMR Eco&Sols, 34398 Montpellier, France
Eco&Sols, Univ. Montpellier, CIRAD, INRAe, Institut Agro, IRD, Montpellier, France
Jean-Paul Laclau
CIRAD, UMR Eco&Sols, 34398 Montpellier, France
Eco&Sols, Univ. Montpellier, CIRAD, INRAe, Institut Agro, IRD, Montpellier, France
Joannès Guillemot
CIRAD, UMR Eco&Sols, 34398 Montpellier, France
Department of Forest Sciences ESALQ, University of São Paulo, Piracicaba, São Paulo, Brazil
Eco&Sols, Univ. Montpellier, CIRAD, INRAe, Institut Agro, IRD, Montpellier, France
Yann Nouvellon
CIRAD, UMR Eco&Sols, 34398 Montpellier, France
Eco&Sols, Univ. Montpellier, CIRAD, INRAe, Institut Agro, IRD, Montpellier, France
Nicolas Delpierre
Université Paris-Saclay, CNRS, AgroParisTech, Ecologie Systématique et Evolution, 91405, Orsay, France
Institut Universitaire de France (IUF), 75231, Paris, France
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Short summary
After simulating the effects of low levels of potassium on the canopy of trees and the uptake of carbon dioxide from the atmosphere by leaves in Part 1, here we tried to simulate the way the trees use the carbon they have acquired and the interaction with the potassium cycle in the tree. We show that the effect of low potassium on the efficiency of the trees in acquiring carbon is enough to explain why they produce less wood when they are in soils with low levels of potassium.
After simulating the effects of low levels of potassium on the canopy of trees and the uptake of...
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