Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1188013
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dc.contributor.authorRODRÍGUEZ‐ALBARRACÍN, H. S.
dc.contributor.authorDEMATTÊ, J. A. M.
dc.contributor.authorCARVALHO NETO, M. P. P.
dc.contributor.authorROSIN, N. A.
dc.contributor.authorCERRI, C. E. P.
dc.contributor.authorSILVA, C. A. da
dc.contributor.authorLIMA, J. R. de S.
dc.contributor.authorSOUZA, E. S. de
dc.contributor.authorMOITINHO, M. R.
dc.contributor.authorCONTRERAS, A. E. D.
dc.contributor.authorTEODORO, P. E.
dc.contributor.authorRATKE, R. F.
dc.contributor.authorSANTOS, U. J. dos
dc.contributor.authorORESCA, D.
dc.date.accessioned2026-07-06T11:49:09Z-
dc.date.available2026-07-06T11:49:09Z-
dc.date.created2026-07-06
dc.date.issued2026
dc.identifier.citationSoil Science Society of America Journal, v. 90, n. 3, e70258, May/Jun. 2026.
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1188013-
dc.descriptionSoil is the largest terrestrial carbon reservoir and can be a source or sink of CO2 for the atmosphere, depending on management practices. CO2 emissions from the soil surface (FCO2) are directly related to the biological and physicochemical soil properties. Our objective was to estimate and spatialize the net ecosystem production (NEP) for the Brazilian territory, using visible (400-700 nm), near infrared (700-1100 nm), shortwave infrared (1100-2500 nm), (and mid-infrared (2500-25,000 nm, 4000-400 cm- 1) reflectance spectroscopy, digital soil mapping, and machine learning. We created FCO2 and carbon sequestration potential prediction models using soil physical, chemical, and microbiological properties as covariates, while the spatialization was based on a bare soil image, relief, climate, and soil mineralogy. A multivariate regression model with R 2 of 0.35 was fitted for FCO2 and a spatial error model with R 2 0.76 for carbon sequestration. The accuracy of the spatialization ranged from 0.41 to 0.76, with a correlation of 0.56 in an external validation. The NEP map highlights negative balances in the Cerrado, Mata Atl & acirc;ntica, Caatinga, and Amazon biomes, with strong influence of mineralogy, where soils rich in iron oxides are below their carbon-storage capacity. Our methodology can be used as an approximation of the C fixation potential in agroecosystems and contribute to climate change mitigation.
dc.language.isoeng
dc.rightsopenAccess
dc.subjectModelo digital de elevação
dc.subjectAprendizado de máquina
dc.subjectSeqüestro de carbono
dc.subjectEspectroscopia no infravermelho próximo
dc.subjectMapeamento digital do solo
dc.subjectMachine Learning
dc.subjectDigital Soil Mapping
dc.titleA soil sensing mechanism to reach carbon flux at a country scale.
dc.typeArtigo de periódico
dc.subject.nalthesaurusNear-infrared spectroscopy
dc.subject.nalthesaurusDigital elevation models
dc.subject.nalthesaurusCarbon sequestration
riaa.ainfo.id1188013
riaa.ainfo.lastupdate2026-07-06
dc.identifier.doihttps://doi.org/10.1002/saj2.70258
dc.contributor.institutionHEIDY SOLEDAD RODRÍGUEZ‐ALBARRACÍN, UNIVERSIDADE DE SÃO PAULO
dc.contributor.institutionJOSÉ A. M. DEMATTÊ, UNIVERSIDADE DE SÃO PAULOeng
dc.contributor.institutionMIGUEL PALACIO PELAEZ CARVALHO NETO, UNIVERSIDADE DE SÃO PAULOeng
dc.contributor.institutionNICOLAS AUGUSTO ROSIN, CNPSeng
dc.contributor.institutionCARLOS EDUARDO PELLEGRINO CERRI, UNIVERSIDADE DE SÃO PAULOeng
dc.contributor.institutionCARLOS ANTONIO DA SILVA, UNIVERSIDADE DO ESTADO DE MATO GROSSOeng
dc.contributor.institutionJOSÉ R. DE SOUSA LIMA, UNIVERSIDADE FEDERAL DO AGRESTE DE PERNAMBUCOeng
dc.contributor.institutionEDUARDO S. DE SOUZA, UNIVERSIDADE FEDERAL RURAL DE PERNAMBUCOeng
dc.contributor.institutionMARA REGINA MOITINHO, UNIVERSITY OF FLORIDAeng
dc.contributor.institutionAQUILES ENRIQUE DARGHAN CONTRERAS, UNIVERSIDAD NACIONAL DE COLOMBIAeng
dc.contributor.institutionPAULO EDUARDO TEODORO, UNIVERSIDADE FEDERAL DE MATO GROSSO DO SULeng
dc.contributor.institutionRAFAEL FELIPPE RATKE, UNIVERSIDADE FEDERAL DE MATO GROSSO DO SULeng
dc.contributor.institutionUEMESON JOSÉ DOS SANTOS, INSTITUTO FEDERAL DE EDUCAÇÃO, CIÊNCIA E TECNOLOGIA DO PARÁeng
dc.contributor.institutionDENIZARD ORESCA, UNIVERSIDADE FEDERAL RURAL DE PERNAMBUCO.eng
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