Partial asynchrony of coniferous forest carbon sources and sinks at the intra-annual time scale

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027073%3A_____%2F24%3AN0000064" target="_blank" >RIV/00027073:_____/24:N0000064 - isvavai.cz</a>

Result on the web

<a href="https://www.nature.com/articles/s41467-024-49494-5" target="_blank" >https://www.nature.com/articles/s41467-024-49494-5</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/s41467-024-49494-5" target="_blank" >10.1038/s41467-024-49494-5</a>

Result language

angličtina

Original language name

Partial asynchrony of coniferous forest carbon sources and sinks at the intra-annual time scale

Original language description

As major terrestrial carbon sinks, forests play an important role in mitigating climate change. The relationship between the seasonal uptake of carbon and its allocation to woody biomass remains poorly understood, leaving a significant gap in our capacity to predict carbon sequestration by forests. Here, we compare the intra-annual dynamics of carbon fluxes and wood formation across the Northern hemisphere, from carbon assimilation and the formation of non-structural carbon compounds to their incorporation in woody tissues. We show temporally coupled seasonal peaks of carbon assimilation (GPP) and wood cell differentiation, while the two processes are substantially decoupled during off-peak periods. Peaks of cambial activity occur substantially earlier compared to GPP, suggesting the buffer role of non-structural carbohydrates between the processes of carbon assimilation and allocation to wood. Our findings suggest that high-resolution seasonal data of ecosystem carbon fluxes, wood formation and the associated physiological processes may reduce uncertainties in carbon source-sink relationships at different spatial scales, from stand to ecosystem levels. Forest carbon source and sink processes may have contrasting climatic sensitivities. This analysis on 177 coniferous forest sites shows that carbon fluxes and wood formation are coupled but not fully synchronous at intra-annual scales, with peaks in cambial activity preceding those in photosynthesis and respiration.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10611 - Plant sciences, botany

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

NATURE COMMUNICATIONS

ISSN

—

e-ISSN

2041-1723

Volume of the periodical

15

Issue of the periodical within the volume

1

Country of publishing house

DE - GERMANY

Number of pages

12

Pages from-to

6169

UT code for WoS article

001284820100025

EID of the result in the Scopus database

2-s2.0-85200446432