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  Historical carbon dioxide emissions caused by land-use changes are possibly larger than assumed

Arneth, A., Sitch, S., Pongratz, J., Stocker, B. D., Ciais, P., Poulter, B., et al. (2017). Historical carbon dioxide emissions caused by land-use changes are possibly larger than assumed. Nature Geoscience, 10(2), 79-84. doi:10.1038/ngeo2882.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-502E-1 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-CD64-4
Genre: Journal Article

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 Creators:
Arneth, A., Author
Sitch, S., Author
Pongratz, J., Author
Stocker, B. D., Author
Ciais, P., Author
Poulter, B., Author
Bayer, A. D., Author
Bondeau, A., Author
Calle, L., Author
Chini, L. P., Author
Gasser, T., Author
Fader, M., Author
Friedlingstein, P., Author
Kato, E., Author
Li, W., Author
Lindeskog, M., Author
Nabel, J. E. M. S., Author
Pugh, T. A. M., Author
Robertson, E., Author
Viovy, N., Author
Yue, C., AuthorZaehle, Sönke1, 2, Author               more..
Affiliations:
1Terrestrial Biosphere Modelling, Dr. Sönke Zähle, Department Biogeochemical Integration, Dr. M. Reichstein, Max Planck Institute for Biogeochemistry, Max Planck Society, ou_1938309              
2Terrestrial Biosphere Modelling, Dr. Sönke Zähle, Department Biogeochemical Integration, Prof. Dr. Martin Heimann, Max Planck Institute for Biogeochemistry, Max Planck Society, ou_1497787              

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 Abstract: The terrestrial biosphere absorbs about 20% of fossil-fuel CO2 emissions. The overall magnitude of this sink is constrained by the difference between emissions, the rate of increase in atmospheric CO2 concentrations, and the ocean sink. However, the land sink is actually composed of two largely counteracting fluxes that are poorly quantified: fluxes from land-use change and CO2 uptake by terrestrial ecosystems. Dynamic global vegetation model simulations suggest that CO2 emissions from land-use change have been substantially underestimated because processes such as tree harvesting and land clearing from shifting cultivation have not been considered. As the overall terrestrial sink is constrained, a larger net flux as a result of land-use change implies that terrestrial uptake of CO2 is also larger, and that terrestrial ecosystems might have greater potential to sequester carbon in the future. Consequently, reforestation projects and efforts to avoid further deforestation could represent important mitigation pathways, with co-benefits for biodiversity. It is unclear whether a larger land carbon sink can be reconciled with our current understanding of terrestrial carbon cycling. Our possible underestimation of the historical residual terrestrial carbon sink adds further uncertainty to our capacity to predict the future of terrestrial carbon uptake and losses.

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 Dates: 2016-12-202017-01-202017-02
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Method: -
 Identifiers: Other: BGC2592
DOI: 10.1038/ngeo2882
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Project name : QUINCY
Grant ID : 647204
Funding program : Horizon 2020 (H2020)
Funding organization : European Commission (EC)

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Title: Nature Geoscience
Source Genre: Journal
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Publ. Info: London : Nature Publishing Group
Pages: - Volume / Issue: 10 (2) Sequence Number: - Start / End Page: 79 - 84 Identifier: ISSN: 1752-0894
CoNE: /journals/resource/1752-0894