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dc.contributor.authorSAGRILO, E.pt_BR
dc.contributor.authorJEFFERY, S.pt_BR
dc.contributor.authorHOFFLAND, E.pt_BR
dc.contributor.authorKUYPER, T. W.pt_BR
dc.date.accessioned2015-12-01T11:11:11Zpt_BR
dc.date.available2015-12-01T11:11:11Zpt_BR
dc.date.created2015-12-01pt_BR
dc.date.issued2015pt_BR
dc.identifier.citationGCB Bioenergy, Hoboken, NJ, v. 7, n. 6, p. 1294-1304, Nov. 2015.pt_BR
dc.identifier.issn1757-1707pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1030096pt_BR
dc.descriptionSoil amendment with pyrogenic organic matter (PyOM), also named biochar, is claimed to sequester carbon (C). However, possible interactions between PyOM and native soil organic carbon (SOC) may accelerate the loss of SOC, thus reducing PyOM?s C sequestration potential. We combined the results of 46 studies in a meta-analysis to investigate changes in CO2 emission of PyOM-amended soils and to identify the causes of these changes and the possible factors involved. Our results showed a statistically significant increase of 28% in CO2 emission from PyOM-amended soils. When grouped by PyOM C (PyC):SOC ratios, the group of studies with a ratio >2 showed a significant increase in CO2 emissions, but those with a ratio <2 showed no significant effect of PyOM application on CO2 emission. Our data are consistent with the hypothesis that increased CO2 emission after PyOM addition is additive and mainly derived from PyOM?s labile C fractions. The PyC:SOC ratio provided the best predictor of increases in CO2 production after PyOM addition to soil. This meta-analysis highlights the importance of taking into account the amount of applied PyC in relation to SOC for designing future decomposition experiments.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectSequestro de carbonopt_BR
dc.subjectRecalcitrânciapt_BR
dc.subjectAdditive effectspt_BR
dc.subjectDecompositionpt_BR
dc.subjectPrimingpt_BR
dc.subjectPyrogenic organic matterpt_BR
dc.subjectRecalcitrancept_BR
dc.titleEmission of CO2 from biochar-amended soils and implications for soil organic carbon.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2015-12-01T11:11:11Zpt_BR
dc.subject.thesagroMatéria orgânicapt_BR
dc.subject.thesagroDecomposiçãopt_BR
dc.subject.nalthesaurusCarbon sequestrationpt_BR
riaa.ainfo.id1030096pt_BR
riaa.ainfo.lastupdate2015-12-01pt_BR
dc.identifier.doi10.1111/gcbb.12234pt_BR
dc.contributor.institutionEDVALDO SAGRILO, CPAMN; SIMON JEFFERY, Department of Soil Quality, Wageningen University, Wageningen, The Netherlands.; ELLI S HOFFLAND, Department of Soil Quality, Wageningen University, Wageningen, The Netherland; THOMAS W. KUYPER, Department of Soil Quality, Wageningen University, Wageningen, The Netherlands.pt_BR
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