Biogeosciences
Biogeosciences
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Articles | Volume 23, issue 20
Articles | Volume 23, issue 20
https://doi.org/10.5194/bg-23-7591-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-23-7591-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 23, issue 20
Research article
 | 
29 Oct 2026
Research article |  | 29 Oct 2026

Contribution of fine roots on carbon allocation patterns in Norwegian forests

Andreas Hagenbo, Ryan M. Bright, Christian Wilhelm Mohr, Marius Hauglin, Simon Weldon, and Lise Dalsgaard

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Short summary
Boreal forests are a major global carbon (C) sink, yet much productivity occurs belowground in fine roots, which are hard to measure and introduce uncertainty in regional C estimates. Using Norwegian forest maps and satellite data, we show that including fine root and understory production increases net primary production 3 to 5-fold relative to tree growth, with major implications on forest’s carbon use efficiency, highlighting the role of  fine root dynamics for regional C accounting methods.
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