Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1038618
Registro completo de metadados
Campo DCValorIdioma
dc.contributor.authorGROPPO, J. D.pt_BR
dc.contributor.authorLINS, S. R. M.pt_BR
dc.contributor.authorCAMARGO, P. B.pt_BR
dc.contributor.authorASSAD, E. D.pt_BR
dc.contributor.authorPINTO, H. S.pt_BR
dc.contributor.authorMARTINS, S. C.pt_BR
dc.contributor.authorSALGADO, P. R.pt_BR
dc.contributor.authorEVANGELISTA, B.pt_BR
dc.contributor.authorVASCONCELLOS, E.pt_BR
dc.contributor.authorSANO, E. E.pt_BR
dc.contributor.authorPAVÃO, E.pt_BR
dc.contributor.authorLUNA, R.pt_BR
dc.contributor.authorMARTINELLI, L. A.pt_BR
dc.date.accessioned2016-02-25T11:11:11Zpt_BR
dc.date.available2016-02-25T11:11:11Zpt_BR
dc.date.created2016-02-25pt_BR
dc.date.issued2015pt_BR
dc.identifier.citationBiogeosciences, v. 12, n. 15, p. 4765-4780, 2015.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1038618pt_BR
dc.descriptionAbstract. In this paper, soil carbon, nitrogen and phosphorus concentrations and stocks were investigated in agricultural and natural areas in 17 plot-level paired sites and in a regional survey encompassing more than 100 pasture soils In the paired sites, elemental soil concentrations and stocks were determined in native vegetation (forests and savannas), pastures and crop-livestock systems (CPSs). Nutrient stocks were calculated for the soil depth intervals 0-10, 0-30, and 0-60 cm for the paired sites and 0-10, and 0-30 cm for the pasture regional survey by sum stocks obtained in each sampling intervals (0-5, 5-10, 10-20, 20-30, 30-40, 40-60 cm). Overall, there were significant differences in soil element concentrations and ratios between different land uses, especially in the surface soil layers. Carbon and nitrogen contents were lower, while phosphorus contents were higher in the pasture and CPS soils than in native vegetation soils. Additionally, soil stoichiometry has changed with changes in land use. The soil C :N ratio was lower in the native vegetation than in the pasture and CPS soils, and the carbon and nitrogen to available phosphorus ratio (PME/ decreased from the native vegetation to the pasture to the CPS soils. In the plotlevel paired sites, the soil nitrogen stocks were lower in all depth intervals in pasture and in the CPS soils when compared with the native vegetation soils. On the other hand, the soil phosphorus stocks were higher in all depth intervals in agricultural soils when compared with the native vegetation soils. For the regional pasture survey, soil nitrogen and phosphorus stocks were lower in all soil intervals in pasture soils than in native vegetation soils. The nitrogen loss with cultivation observed here is in line with other studies and it seems to be a combination of decreasing organic matter inputs, in cases where crops replaced native forests, with an increase in soil organic matter decomposition that leads to a decrease in the long run. The main cause of the increase in soil phosphorus stocks in the CPS and pastures of the plot-level paired site seems to be linked to phosphorus fertilization by mineral and organics fertilizers. The findings of this paper illustrate that land-use changes that are currently common in Brazil alter soil concentrations, stocks and elemental ratios of carbon, nitrogen and phosphorus. These changes could have an impact on the subsequent vegetation, decreasing soil carbon and increasing nitrogen limitation but alleviating soil phosphorus deficiency.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectNutrientes no solopt_BR
dc.subjectEstoque de nitrogêniopt_BR
dc.subjectEstoque de carbonopt_BR
dc.subjectEstoque de fósforopt_BR
dc.subjectConcentração de nitrogêniopt_BR
dc.subjectConcentração de carbonopt_BR
dc.subjectConcentração de fósforopt_BR
dc.subjectEstequiometriapt_BR
dc.titleChanges in soil carbon, nitrogen, and phosphorus due to land-use changes in Brazil.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2016-03-07T11:11:11Zpt_BR
dc.subject.thesagroAgriculturapt_BR
dc.subject.thesagroSolopt_BR
dc.subject.nalthesaurusAgriculturept_BR
dc.subject.nalthesaurusNitrogen contentpt_BR
dc.subject.nalthesaurusCarbon sinkspt_BR
dc.subject.nalthesaurusSoilpt_BR
dc.subject.nalthesaurusSoil nutrient balancept_BR
dc.subject.nalthesaurusStoichiometrypt_BR
riaa.ainfo.id1038618pt_BR
riaa.ainfo.lastupdate2016-03-07pt_BR
dc.identifier.doi10.5194/bg-12-4765-2015pt_BR
dc.contributor.institutionCNPTIA; Cena/USP; Cena/USP; EDUARDO DELGADO ASSAD, CNPTIA; Unicamp; FGV; PAULA RODRIGUES SALGADO, SAPC; CPAC; CNPTIA; EDSON EYJI SANO, CPAC; CNPTIA; CNPTIA; Cena/USP.pt_BR
Aparece nas coleções:Artigo em periódico indexado (CNPTIA)

Arquivos associados a este item:
Arquivo Descrição TamanhoFormato 
APChangesGroppo.pdf1,31 MBAdobe PDFThumbnail
Visualizar/Abrir
Mostrar registro simples do item Visualizar estatísticas

FacebookTwitterDeliciousLinkedInGoogle BookmarksMySpace