Spatial variation of soil organic matter and metal mobility in wetland soils: Implications for biogeochemical processes in lateritic landscape

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversité du Sud Toulon Var-
Autor(es): dc.contributorUniversidade Federal Goiás (UFG)-
Autor(es): dc.creatorLuko-Sulato, Karen-
Autor(es): dc.creatorMounier, Stéphane-
Autor(es): dc.creatorMoreira Furlan, Lucas-
Autor(es): dc.creatorGovone, José Silvio-
Autor(es): dc.creatorTaitson Bueno, Guilherme-
Autor(es): dc.creatorRosolen, Vania-
Data de aceite: dc.date.accessioned2025-08-21T15:26:22Z-
Data de disponibilização: dc.date.available2025-08-21T15:26:22Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-03-30-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.catena.2024.107810-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/300144-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/300144-
Descrição: dc.descriptionThe evolution of the lateritic landscape over time changes the path of pedogenesis and soil hydrology. The occurrence of upland wetlands in the savannah flat plateau transforms well-drained lateritic soils into hydric soils enriched in organic matter. We investigated the composition of soil organic matter (SOM) produced in a wetland and their link with the mineral constituents of soil and their contribution to the mobility of Si, Fe, and Al in the soil. Six tranches were opened in a soil catena located from the plateau toward the center of the wetland, representing different hydromorphic features. Soil morphology was described, and chemical, physical and mineralogical analyses were performed to evaluate soil properties. Chemical fractionation of Soil Organic Matter (SOM) was performed and total organic carbon (TOC), dissolved organic carbon (DOC), particulate organic carbon (POC), and water-extractable organic matter (WEOM) were determined in the soil horizons. Metal complexing properties of DOM were determined using an excitation-emission matrix of fluorescence. The occurrence of Fe eluviation in the superficial horizons, Fe2O3 enrichment in the mottled horizons, and ferricrete formation in the center of the wetland were observed. Geochemical transfer assessment and the variation of oxides within the horizons showed that Fe2O3 and SiO2 were more mobile than Al2O3, whose variability in the gley horizon reflected the mobility of Fe2O3 and SiO2. The stability constants of Al and Cu showed an increase with the depth for WEOM and SOM. The pattern of the organic carbon fraction varied according to the level of hydromorphy and soil depth. It was also observed an increase in the C/N ratio with depth, possibly related to the reduced bioavailability of DOC due to its adsorption with soil solids.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionDepartamento de Geologia Instituto de Geociências e Ciências Exatas (IGCE) Universidade Estadual Paulista (UNESP), Av. 24A, 1515, Bela Vista, SP-
Descrição: dc.descriptionLaboratoire d'étude de PROcessus de Transferts etd'É changes dans l'environnement (PROTEE-EA 3819) - CAPTE Université du Sud Toulon Var, BP 20132-
Descrição: dc.descriptionCentro de Estudos Ambientais (CEA) Universidade Estadual Paulista (UNESP), Av. 24A, 1515, Bela Vista, SP-
Descrição: dc.descriptionDepartamento de Estatística e Matemática Aplicada Instituto de Geociências e Ciências Exatas (IGCE) Universidade Estadual Paulista (UNESP), Av. 24A, 1515, Bela Vista, SP-
Descrição: dc.descriptionInstituto de Estudos Sócio-Ambiental (IESA) Universidade Federal Goiás (UFG), GO-
Descrição: dc.descriptionDepartamento de Geologia Instituto de Geociências e Ciências Exatas (IGCE) Universidade Estadual Paulista (UNESP), Av. 24A, 1515, Bela Vista, SP-
Descrição: dc.descriptionCentro de Estudos Ambientais (CEA) Universidade Estadual Paulista (UNESP), Av. 24A, 1515, Bela Vista, SP-
Descrição: dc.descriptionDepartamento de Estatística e Matemática Aplicada Instituto de Geociências e Ciências Exatas (IGCE) Universidade Estadual Paulista (UNESP), Av. 24A, 1515, Bela Vista, SP-
Descrição: dc.descriptionFAPESP: 2017/14168-1-
Idioma: dc.languageen-
Relação: dc.relationCatena-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectFe eluviation-
Palavras-chave: dc.subjectFerricrete-
Palavras-chave: dc.subjectMetal–organic matter interaction-
Palavras-chave: dc.subjectMottled horizon-
Palavras-chave: dc.subjectSoil organic matter-
Título: dc.titleSpatial variation of soil organic matter and metal mobility in wetland soils: Implications for biogeochemical processes in lateritic landscape-
Tipo de arquivo: dc.typelivro digital-
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