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dc.contributor.author
Berhongaray, Gonzalo
dc.contributor.author
Cotrufo, Francesca M.
dc.contributor.author
Janssens, Ivan A.
dc.contributor.author
Ceulemans, Reinhart
dc.date.available
2019-09-05T20:08:58Z
dc.date.issued
2019-01
dc.identifier.citation
Berhongaray, Gonzalo; Cotrufo, Francesca M.; Janssens, Ivan A.; Ceulemans, Reinhart; Below-ground carbon inputs contribute more than above-ground inputs to soil carbon accrual in a bioenergy poplar plantation; Springer; Plant and Soil; 434; 1-2; 1-2019; 363-378
dc.identifier.issn
0032-079X
dc.identifier.uri
http://hdl.handle.net/11336/82993
dc.description.abstract
Background and aims: Soil organic carbon (SOC) accrual is central to the discussion on active atmospheric CO2 removal strategies, but it requires a clear understanding of the mechanisms driving new SOC formation. SOC is formed from the decomposition of above- and below-ground plant inputs, yet their accurate quantification remains a major challenge. In the current study the in-growth soil core and δ13C methods were combined to quantify the net C input from single or combined above- and below-ground parts of a poplar (Populus) bioenergy plantation. Methods: Three different mesh sizes were used for the in-growth cores in four different treatments designed to estimate the relative contributions of above-ground litter fall, fine roots and mycorrhizae (C3 input from the poplar) to the new C formation in cores filled with a C4 soil, by applying a mass balance equation. Results: Soil C formation was higher in the treatments with roots as compared to the treatments with above-ground C inputs only (29 vs 16 g C m−2), despite the disproportionally lower root inputs as compared to above-ground C inputs (34 vs 175 g C m−2 y−1). Soil C formation from different sources (above- and below-ground) was additive; i.e. the observed soil C formation in the combined treatment was the sum of those in the single soil C input treatments. As a result, below-ground C-inputs had a high conversion efficiency to SOC of 76%. Above-ground plant inputs had a very low SOC formation efficiency of 9%, and were presumably mainly mineralized by microorganisms. Conclusion: The higher soil C accumulation rates from below-ground C inputs are particularly important in bioenergy plantations where the above-ground biomass is frequently removed for biomass and energy production.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
13c
dc.subject
In-Growth Cores
dc.subject
Isotopes
dc.subject
Populus Spp
dc.subject
Roots
dc.subject.classification
Ciencias del Suelo
dc.subject.classification
Agricultura, Silvicultura y Pesca
dc.subject.classification
CIENCIAS AGRÍCOLAS
dc.title
Below-ground carbon inputs contribute more than above-ground inputs to soil carbon accrual in a bioenergy poplar plantation
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-08-08T18:07:50Z
dc.journal.volume
434
dc.journal.number
1-2
dc.journal.pagination
363-378
dc.journal.pais
Alemania
dc.journal.ciudad
Berlin
dc.description.fil
Fil: Berhongaray, Gonzalo. Universiteit Antwerp; Bélgica. Universidad Nacional del Litoral. Facultad de Ciencias Agrarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina
dc.description.fil
Fil: Cotrufo, Francesca M.. State University of Colorado - Fort Collins; Estados Unidos
dc.description.fil
Fil: Janssens, Ivan A.. Universiteit Antwerp; Bélgica
dc.description.fil
Fil: Ceulemans, Reinhart. Universiteit Antwerp; Bélgica. CzechGlobe; República Checa
dc.journal.title
Plant and Soil
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s11104-018-3850-z
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs11104-018-3850-z
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