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 | Acesso ao texto completo restrito à biblioteca da Embrapa Solos. Para informações adicionais entre em contato com cnps.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
04/02/2022 |
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Data da última atualização: |
11/03/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PEREIRA, M. G.; SILVA, R. C. da; PINHEIRO JUNIOR, C. R.; OLIVEIRA, F. S. de; SILVA NETO, E. C. da; FONTANA, A.; PACHECO, A. A.; PEDRON, F. de A. |
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Afiliação: |
MARCOS GERVASIO PEREIRA, UFRRJ; RAFAEL CIPRIANO DA SILVA, FUNCEME; CARLOS ROBERTO PINHEIRO JUNIOR, UFRRJ; FÁBIO SOARES DE OLIVEIRA, UFMG; EDUARDO CARVALHO DA SILVA NETO, UFRRJ; ADEMIR FONTANA, CNPS; ANDERSON ALMEIDA PACHECO, FUNDAÇÃO RENOVA; FABRÍCIO DE ARAÚJO PEDRON, UFSM. |
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Título: |
Soil genesis on the soft slopes of ancient coastal plains, southeastern Brazil. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Catena, v. 210, 105894, Mar. 2022. |
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DOI: |
https://doi.org/10.1016/j.catena.2021.105894 |
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Idioma: |
Inglês |
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Conteúdo: |
Coastal plains are characterized by low-elevation and small altitude variation and occupy an area of 57 million km2 worldwide. Ancient coastal plains that occur in the State of Rio de Janeiro (RJ), Brazil, have their pedological diversity neglected due to the generalization of some soil classes, underestimating the diversity of soils in these regions, hence limiting the evaluation for use and management. The aim of this study was to characterize the diversity of soils in a toposequence along an ancient coastal plain and to understand the pedogenetic processes involved. For this, soil pits were opened in the lower third (P1), middle third (P2), upper third (P3) and at the top (P4) of a toposequence. Soil profiles were characterized for morphological, physical, chemical, mineralogical and micromorphological properties. Profile P1 was classified as Planosol, being formed from colluvial sediments. In this profile, a lithological discontinuity was identified based on the irregularity of the values of silt/clay and coarse sand/fine sand ratios in subsurface. In this profile, limited drainage conditions were also observed. The main formation processes identified were ferrolysis and clay eluviation/illuviation, which promoted the increase of the textural gradient and thickening of the E horizon. Profiles P2 and P3 were classified as Ferralsols, were kaolinitic, with no redox conditions, and with predominance of eluviation/illuviation processes associated with pedoturbation, with a small increment of clay in the subsurface in both profiles. In profile P2, more so than in P3, there was still a strong influence of colluvial sediments, identified by the presence of a lithological discontinuity. For profile P4, a Plinthosol, located at the top of the toposequence, its formation was related to the action of weathering on the underlying acidic granite-gneiss rock. Despite the presence of plinthite, which denoted the occurrence of plinthization, the micromorphological description made it possible to state that it was a relictual condition whose formation occurred under past climatic conditions with higher water table level and which is currently being destroyed. MenosCoastal plains are characterized by low-elevation and small altitude variation and occupy an area of 57 million km2 worldwide. Ancient coastal plains that occur in the State of Rio de Janeiro (RJ), Brazil, have their pedological diversity neglected due to the generalization of some soil classes, underestimating the diversity of soils in these regions, hence limiting the evaluation for use and management. The aim of this study was to characterize the diversity of soils in a toposequence along an ancient coastal plain and to understand the pedogenetic processes involved. For this, soil pits were opened in the lower third (P1), middle third (P2), upper third (P3) and at the top (P4) of a toposequence. Soil profiles were characterized for morphological, physical, chemical, mineralogical and micromorphological properties. Profile P1 was classified as Planosol, being formed from colluvial sediments. In this profile, a lithological discontinuity was identified based on the irregularity of the values of silt/clay and coarse sand/fine sand ratios in subsurface. In this profile, limited drainage conditions were also observed. The main formation processes identified were ferrolysis and clay eluviation/illuviation, which promoted the increase of the textural gradient and thickening of the E horizon. Profiles P2 and P3 were classified as Ferralsols, were kaolinitic, with no redox conditions, and with predominance of eluviation/illuviation processes associated with pedoturbation, with a s... Mostrar Tudo |
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Palavras-Chave: |
Ferrolysis; Lithological discontinuity; Micropedology; Pedogenesis. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02974naa a2200265 a 4500
001 2139674
005 2022-03-11
008 2022 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.catena.2021.105894$2DOI
100 1 $aPEREIRA, M. G.
245 $aSoil genesis on the soft slopes of ancient coastal plains, southeastern Brazil.$h[electronic resource]
260 $c2022
520 $aCoastal plains are characterized by low-elevation and small altitude variation and occupy an area of 57 million km2 worldwide. Ancient coastal plains that occur in the State of Rio de Janeiro (RJ), Brazil, have their pedological diversity neglected due to the generalization of some soil classes, underestimating the diversity of soils in these regions, hence limiting the evaluation for use and management. The aim of this study was to characterize the diversity of soils in a toposequence along an ancient coastal plain and to understand the pedogenetic processes involved. For this, soil pits were opened in the lower third (P1), middle third (P2), upper third (P3) and at the top (P4) of a toposequence. Soil profiles were characterized for morphological, physical, chemical, mineralogical and micromorphological properties. Profile P1 was classified as Planosol, being formed from colluvial sediments. In this profile, a lithological discontinuity was identified based on the irregularity of the values of silt/clay and coarse sand/fine sand ratios in subsurface. In this profile, limited drainage conditions were also observed. The main formation processes identified were ferrolysis and clay eluviation/illuviation, which promoted the increase of the textural gradient and thickening of the E horizon. Profiles P2 and P3 were classified as Ferralsols, were kaolinitic, with no redox conditions, and with predominance of eluviation/illuviation processes associated with pedoturbation, with a small increment of clay in the subsurface in both profiles. In profile P2, more so than in P3, there was still a strong influence of colluvial sediments, identified by the presence of a lithological discontinuity. For profile P4, a Plinthosol, located at the top of the toposequence, its formation was related to the action of weathering on the underlying acidic granite-gneiss rock. Despite the presence of plinthite, which denoted the occurrence of plinthization, the micromorphological description made it possible to state that it was a relictual condition whose formation occurred under past climatic conditions with higher water table level and which is currently being destroyed.
653 $aFerrolysis
653 $aLithological discontinuity
653 $aMicropedology
653 $aPedogenesis
700 1 $aSILVA, R. C. da
700 1 $aPINHEIRO JUNIOR, C. R.
700 1 $aOLIVEIRA, F. S. de
700 1 $aSILVA NETO, E. C. da
700 1 $aFONTANA, A.
700 1 $aPACHECO, A. A.
700 1 $aPEDRON, F. de A.
773 $tCatena$gv. 210, 105894, Mar. 2022.
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Registro original: |
Embrapa Solos (CNPS) |
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Registro Completo
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
23/06/2003 |
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Data da última atualização: |
07/05/2008 |
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Autoria: |
SOUZA, G. B.; SIMÕES, M. L.; GONZÁLES-PÉREZ, M.; MARTIN NETO, L.; NOGUEIRA, A. R. A. |
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Afiliação: |
Embrapa Instrumentação Agropecuária, São Carlos, SP. |
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Título: |
Influência do método de secagem em amostras de silagem de milho: avaliação e caracterização empregando espectroscopia de EPR e FTIR. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE QUÍMICA, 25., 2002, Poços de Caldas. Livro de resumos... [Poços de Caldas]: SBQ, 2002. |
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Páginas: |
não paginado, ref. QA-001. |
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Idioma: |
Português |
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Conteúdo: |
O objetivo deste estudo foi avaliar, através das técnicas de Ressonância Paramagnética Eletrônica (EPR_ e Infravermelho com Transformada de Fourier (FTIR), os efeitos térmicos em amostra de silagem de milho causados pelos métodos em laboratórios de nutrição animal. |
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Palavras-Chave: |
Efeito térmico; EPR; Espectroscopia; FTIR; Preparo de amostras; Ressonância paramagnética eletrônica; Transformada de Fourier. |
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Thesagro: |
Milho; Silagem. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01232naa a2200289 a 4500
001 1024673
005 2008-05-07
008 2002 bl --- 0-- u #d
100 1 $aSOUZA, G. B.
245 $aInfluência do método de secagem em amostras de silagem de milho$bavaliação e caracterização empregando espectroscopia de EPR e FTIR.
260 $c2002
300 $anão paginado, ref. QA-001.
520 $aO objetivo deste estudo foi avaliar, através das técnicas de Ressonância Paramagnética Eletrônica (EPR_ e Infravermelho com Transformada de Fourier (FTIR), os efeitos térmicos em amostra de silagem de milho causados pelos métodos em laboratórios de nutrição animal.
650 $aMilho
650 $aSilagem
653 $aEfeito térmico
653 $aEPR
653 $aEspectroscopia
653 $aFTIR
653 $aPreparo de amostras
653 $aRessonância paramagnética eletrônica
653 $aTransformada de Fourier
700 1 $aSIMÕES, M. L.
700 1 $aGONZÁLES-PÉREZ, M.
700 1 $aMARTIN NETO, L.
700 1 $aNOGUEIRA, A. R. A.
773 $tIn: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE QUÍMICA, 25., 2002, Poços de Caldas. Livro de resumos... [Poços de Caldas]: SBQ, 2002.
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Embrapa Instrumentação (CNPDIA) |
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