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We thank all the contributors to the C flux database used here and in Luyssaert et al.1. This includes all site investigators, their funding agencies, the various regional flux networks (Afriflux, AmeriFlux, AsiaFlux, CarboAfrica, CarboEurope-IP, ChinaFlux, Fluxnet-Canada, KoFlux, LBA, NECC, OzFlux, TCOS-Siberia, USCCC), and the Fluxnet project, whose support was essential for obtaining the measurements compiled in the database. P.G. received funding from Aage V. Jensens Naturfond and T.N.-L. and L.V. received funding from ERA-GAS INVENT (NRC number 276398).
The authors declare no competing interests.
Publisher’s note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
This file contains Supplementary Tables S1 to S3 and supplementary references 23−27. Supplementary Table S1 shows carbon flux estimates for the boreal and temperate forest area; Supplementary Table S2 shows estimates of nitrogen input rates needed to sustain the carbon build up in biomass, woody debris and soil organic matter; Supplementary Table S3 shows carbon sequestration in temperate and boreal forests with different management history.
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Gundersen, P., Thybring, E.E., Nord-Larsen, T. et al. Old-growth forest carbon sinks overestimated. Nature 591, E21–E23 (2021). https://doi.org/10.1038/s41586-021-03266-z
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