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  Soil carbon sequestration simulated in CMIP6-LUMIP models: implications for climatic mitigation

Ito, A., Hajima, T., Lawrence, D. M., Brovkin, V., Delire, C., Guenet, B., et al. (2020). Soil carbon sequestration simulated in CMIP6-LUMIP models: implications for climatic mitigation. Environmental Research Letters, 15: 124061. doi:10.1088/1748-9326/abc912.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0007-A03F-E Version Permalink: http://hdl.handle.net/21.11116/0000-0007-A35E-8
Genre: Journal Article

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 Creators:
Ito, Akihiko1, Author
Hajima, Tomohiro1, Author
Lawrence, David M.1, Author
Brovkin, Victor2, Author              
Delire, Christine1, Author
Guenet, Bertrand1, Author
Jones, Chris D.1, Author
Malyshev, Sergey1, Author
Materia, Stefano1, Author
McDermid, Sonali P.1, Author
Peano, Daniele1, Author
Pongratz, Julia, Author              
Robertson, Eddy1, Author
Shevliakova, Elena1, Author
Vuichard, Nicolas1, Author
Warlind, David1, Author
Wiltshire, Andy1, Author
Ziehn, Tilo1, Author
Affiliations:
1external, ou_persistent22              
2Climate-Biogeosphere Interaction, The Land in the Earth System, MPI for Meteorology, Max Planck Society, ou_913566              

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Free keywords: LAND-USE CHANGE; EARTH SYSTEM MODEL; ORGANIC-CARBON; INTERCOMPARISON PROJECT; COVER CHANGE; TERRESTRIAL; CMIP6; TURNOVER; CYCLE; VEGETATIONEnvironmental Sciences & Ecology; Meteorology & Atmospheric Sciences; carbon sequestration; climate change; Earth system models; land-use change; soil organic carbon;
 Abstract: Land-use change affects both the quality and quantity of soil organic carbon (SOC) and leads to changes in ecosystem functions such as productivity and environmental regulation. Future changes in SOC are, however, highly uncertain owing to its heterogeneity and complexity. In this study, we analyzed the outputs of simulations of SOC stock by Earth system models (ESMs), most of which are participants in the Land-Use Model Intercomparison Project. Using a common protocol and the same forcing data, the ESMs simulated SOC distribution patterns and their changes during historical (1850-2014) and future (2015-2100) periods. Total SOC stock increased in many simulations over the historical period (30 +/- 67 Pg C) and under future climate and land-use conditions (48 +/- 32 Pg C for ssp126 and 49 +/- 58 Pg C for ssp370). Land-use experiments indicated that changes in SOC attributable to land-use scenarios were modest at the global scale, in comparison with climatic and rising CO2 impacts, but they were notable in several regions. Future net soil carbon sequestration rates estimated by the ESMs were roughly 0.4 parts per thousand yr(-1) (0.6 Pg C yr(-1)). Although there were considerable inter-model differences, the rates are still remarkable in terms of their potential for mitigation of global warming. The disparate results among ESMs imply that key parameters that control processes such as SOC residence time need to be better constrained and that more comprehensive representation of land management impacts on soils remain critical for understanding the long-term potential of soils to sequester carbon.

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Language(s): eng - English
 Dates: 2020-112020-12-15
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: ISI: 000599110500001
DOI: 10.1088/1748-9326/abc912
 Degree: -

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Title: Environmental Research Letters
  Abbreviation : Environ. Res. Lett.
Source Genre: Journal
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Publ. Info: Bristol : Institute of Physics
Pages: - Volume / Issue: 15 Sequence Number: 124061 Start / End Page: - Identifier: ISSN: 1748-9326
CoNE: https://pure.mpg.de/cone/journals/resource/1748-9326