Articles | Volume 12, issue 20
Biogeosciences, 12, 6205–6217, 2015
https://doi.org/10.5194/bg-12-6205-2015
Biogeosciences, 12, 6205–6217, 2015
https://doi.org/10.5194/bg-12-6205-2015

Research article 29 Oct 2015

Research article | 29 Oct 2015

Influence of wood density in tree-ring-based annual productivity assessments and its errors in Norway spruce

O. Bouriaud et al.

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Short summary
Annual variations in wood density partially compensated ring-width variations in Picea abies. If neglected, annual biomass increment was underestimated by up to 15%. The relative prediction interval of plot-level annual biomass increment ranged from 20 to 40%. The uncertainty related to the allometric models parameters was only about 10%. The errors related to variations in wood density were much larger, the biggest component being the variability between trees.
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