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Registro Completo |
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
04/04/2024 |
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Data da última atualização: |
04/04/2024 |
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Tipo da produção científica: |
Folder/Folheto/Cartilha |
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Autoria: |
OTTONI, M. V.; SOUZA, L. R.; BARBOSA, S. M.; ANDRADE, R.; TEIXEIRA, W. G.; INDA, A. V.; CURI, N. |
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Afiliação: |
MARTA VASCONCELOS OTTONI, SERVIÇO GEOLÓGICO DO BRASIL; LUCIANA RODRIGUES SOUZA, SERVIÇO GEOLÓGICO DO BRASIL; SAMARA M. BARBOSA, UNIVERSIDADE FEDERAL DE LAVRAS; RENATA ANDRADE, UNIVERSIDADE FEDERAL DE LAVRAS; WENCESLAU GERALDES TEIXEIRA, CNPS; ALBERTO VASCONCELLOS INDA, UNIVERSIDADE FEDERAL DO RIO GRANDE DO SUL; NILTON CURI. |
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Título: |
Mineralogia, estrutura e comportamento físico-hídrico de Latossolos brasileiros e comparação com solos de regiões temperadas. |
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Ano de publicação: |
2024 |
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Fonte/Imprenta: |
Rio de Janeiro: Serviço Geológico do Brasil, 2024. |
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Páginas: |
11 p. |
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Série: |
(Serviço Geológico do Brasil. Informe Técnico-Científico de Estudos Hidrológicos e Hidrogeológicos, v. 1, n. 1). |
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Idioma: |
Português |
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Conteúdo: |
The association between the mineralogy of the clay fraction, the structure and the physico-hydraulic behavior of the Brazilian Latosols (Oxisols) is addressed here in a global, simple, objective, and instructive context. The simplicity of the mineralogical composition of the clay fraction of Latosols facilitates the understanding of cause and effect relationships in this context. Higher kaolinite contents favor the manifestation of the blocky structure, resulting in higher bulk density values, lower water infiltration rates, and lower potential aquifer recharge. Conversely, higher levels of gibbsite and Fe-oxide minerals (mainly hematite and goethite), in this order, favor the small granular structure of high stability in the subsurface horizon (B) of the Latosols, constituting an unique, peculiar, and distinctive feature of these soils, the most important in Brazilian territory. This implies lower bulk density values, higher water infiltration rates, and higher potential aquifer recharge. A generic comparison with soils from temperate regions reveals consistently much higher values of saturated hydraulic conductivity in Brazilian Latosols and points to the unequivocal need to adopt these values in irrigation projects, hydrology, terraces dimensioning, waterproofing of landfill bottoms, etc., instead of the enormous risk of adopting values of this property from international literature, which do not reflect, even remotely, the Brazilian reality. The functionality of the granular structure, which dominates in Brazilian Latosols, is a reflection mainly of the clay mineralogy (where gibbsite stands out) and overcomes the effect of texture in terms of saturated hydraulic conductivity. MenosThe association between the mineralogy of the clay fraction, the structure and the physico-hydraulic behavior of the Brazilian Latosols (Oxisols) is addressed here in a global, simple, objective, and instructive context. The simplicity of the mineralogical composition of the clay fraction of Latosols facilitates the understanding of cause and effect relationships in this context. Higher kaolinite contents favor the manifestation of the blocky structure, resulting in higher bulk density values, lower water infiltration rates, and lower potential aquifer recharge. Conversely, higher levels of gibbsite and Fe-oxide minerals (mainly hematite and goethite), in this order, favor the small granular structure of high stability in the subsurface horizon (B) of the Latosols, constituting an unique, peculiar, and distinctive feature of these soils, the most important in Brazilian territory. This implies lower bulk density values, higher water infiltration rates, and higher potential aquifer recharge. A generic comparison with soils from temperate regions reveals consistently much higher values of saturated hydraulic conductivity in Brazilian Latosols and points to the unequivocal need to adopt these values in irrigation projects, hydrology, terraces dimensioning, waterproofing of landfill bottoms, etc., instead of the enormous risk of adopting values of this property from international literature, which do not reflect, even remotely, the Brazilian reality. The functionality of the gran... Mostrar Tudo |
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Palavras-Chave: |
Solos Temperados. |
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Thesagro: |
Estrutura do Solo; Mineralogia; Oxisol. |
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Thesaurus Nal: |
Mineralogy; Oxisols; Soil structure; Temperate soils. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1163287/1/Mineralogia-estrutura-e-comportamento-fisico-hidrico-de-Latossolos-Brasileiros-2024.pdf
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Marc: |
LEADER 02678nam a2200301 a 4500
001 2163287
005 2024-04-04
008 2024 bl uuuu u0uu1 u #d
100 1 $aOTTONI, M. V.
245 $aMineralogia, estrutura e comportamento físico-hídrico de Latossolos brasileiros e comparação com solos de regiões temperadas.$h[electronic resource]
260 $aRio de Janeiro: Serviço Geológico do Brasil$c2024
300 $a11 p.
490 $a(Serviço Geológico do Brasil. Informe Técnico-Científico de Estudos Hidrológicos e Hidrogeológicos, v. 1, n. 1).
520 $aThe association between the mineralogy of the clay fraction, the structure and the physico-hydraulic behavior of the Brazilian Latosols (Oxisols) is addressed here in a global, simple, objective, and instructive context. The simplicity of the mineralogical composition of the clay fraction of Latosols facilitates the understanding of cause and effect relationships in this context. Higher kaolinite contents favor the manifestation of the blocky structure, resulting in higher bulk density values, lower water infiltration rates, and lower potential aquifer recharge. Conversely, higher levels of gibbsite and Fe-oxide minerals (mainly hematite and goethite), in this order, favor the small granular structure of high stability in the subsurface horizon (B) of the Latosols, constituting an unique, peculiar, and distinctive feature of these soils, the most important in Brazilian territory. This implies lower bulk density values, higher water infiltration rates, and higher potential aquifer recharge. A generic comparison with soils from temperate regions reveals consistently much higher values of saturated hydraulic conductivity in Brazilian Latosols and points to the unequivocal need to adopt these values in irrigation projects, hydrology, terraces dimensioning, waterproofing of landfill bottoms, etc., instead of the enormous risk of adopting values of this property from international literature, which do not reflect, even remotely, the Brazilian reality. The functionality of the granular structure, which dominates in Brazilian Latosols, is a reflection mainly of the clay mineralogy (where gibbsite stands out) and overcomes the effect of texture in terms of saturated hydraulic conductivity.
650 $aMineralogy
650 $aOxisols
650 $aSoil structure
650 $aTemperate soils
650 $aEstrutura do Solo
650 $aMineralogia
650 $aOxisol
653 $aSolos Temperados
700 1 $aSOUZA, L. R.
700 1 $aBARBOSA, S. M.
700 1 $aANDRADE, R.
700 1 $aTEIXEIRA, W. G.
700 1 $aINDA, A. V.
700 1 $aCURI, N.
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Embrapa Solos (CNPS) |
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| 1. |  | OTTONI, M. V.; SOUZA, L. R.; BARBOSA, S. M.; ANDRADE, R.; TEIXEIRA, W. G.; INDA, A. V.; CURI, N. Mineralogia, estrutura e comportamento físico-hídrico de Latossolos brasileiros e comparação com solos de regiões temperadas. Rio de Janeiro: Serviço Geológico do Brasil, 2024. 11 p. (Serviço Geológico do Brasil. Informe Técnico-Científico de Estudos Hidrológicos e Hidrogeológicos, v. 1, n. 1).| Tipo: Folder/Folheto/Cartilha |
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