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Registro Completo |
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Biblioteca(s): |
Embrapa Algodão. |
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Data corrente: |
10/11/2004 |
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Data da última atualização: |
10/11/2004 |
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Autoria: |
TORMENA, C. A.; VIDIGAL FILHO, P. S.; GONÇALVES, A. C. A.; ARAÚJO, M. A.; PINTRO, J. C. |
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Título: |
Influência de diferentes sistemas de preparo do solo nas propriedades físicas de um latossolo vermelho distrófico. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
Revista Brasileira de Engenharia Agrícola e Ambiental, v.8, n.1, p.65-71, 2004. |
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Idioma: |
Português |
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Palavras-Chave: |
Preparo convencional; Resistência do solo à penetração; Soil resistance to root penetration. |
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Thesagro: |
Plantio Direto. |
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Thesaurus Nal: |
conventional tillage; no-tillage. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00777naa a2200229 a 4500
001 1273546
005 2004-11-10
008 2004 bl uuuu u00u1 u #d
100 1 $aTORMENA, C. A.
245 $aInfluência de diferentes sistemas de preparo do solo nas propriedades físicas de um latossolo vermelho distrófico.
260 $c2004
650 $aconventional tillage
650 $ano-tillage
650 $aPlantio Direto
653 $aPreparo convencional
653 $aResistência do solo à penetração
653 $aSoil resistance to root penetration
700 1 $aVIDIGAL FILHO, P. S.
700 1 $aGONÇALVES, A. C. A.
700 1 $aARAÚJO, M. A.
700 1 $aPINTRO, J. C.
773 $tRevista Brasileira de Engenharia Agrícola e Ambiental$gv.8, n.1, p.65-71, 2004.
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Registro original: |
Embrapa Algodão (CNPA) |
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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. |
Registro Completo
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
28/08/2013 |
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Data da última atualização: |
23/05/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
PAZ-FERREIRO, J.; LUZ, L. R. Q. P. da; LADO, M.; VÁZQUEZ, E. V. |
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Afiliação: |
J. PAZ-FERREIRO, Polytechnic Univ. of Madrid; LUCIA RAQUEL QUEIROZ PEREIRA DA LUZ, CNPS; M. LADO, Univ. of A Coruña; E. VIDAL VÁZQUEZ, Univ. of A Coruña. |
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Título: |
Specific surface area and multifractal parameters of associated nitrogen adsorption and desorption isotherms in soils from Santa Catarina, Brazil. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Vadose Zone Journal, v. 12, n. 3, 2013. |
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DOI: |
10.2136/vzj2012.0203 |
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Idioma: |
Inglês |
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Conteúdo: |
Multifractal analysis was used to quantify the inner structure of both nitrogen adsorption (NAI) and desorption (NDI) isotherms. The former showed higher scaling heterogeneity and were less persistent than the later. Multifractal parameters gathered from NAIs and NDIs provided more information than specific surface area (SSA) estimates and best correlated with organic carbon and clay content and, respectively. Nitrogen adsorption isotherms (NAI) and Nitrogen desorption isotherms (NDI) are commonly used to evaluate specific surface area (SSA) of soils and other materials. Scaling analysis of N2 isotherms yield complementary information about the complexity of the soil surface. We evaluated the specific surface area (SSA) and examined the scaling properties of NAIs and associated NDIs from clayey soils, rich in organic matter sampled in Santa Catarina State, Brazil. Sixty six soil horizons were sampled in 13 profiles. Ten of these profiles were developed over volcanic rocks with a wide range of mineralogical composition. Clay content and cation exchange capacity (CEC) showed a weak positive correlation to SSA, which was attributed to variable clay mineralogy. Organic carbon content showed a weak negative correlation to SSA. Both NAIs and NDIs exhibited multifractal behavior, but its scaling properties were different so that adsorption isotherms showed higher scaling heterogeneity and were less evenly distributed measures than desorption isotherm. Also, parameterization by the Hurst exponent indicates NAIs were less persistent than NDIs. Differences in multifractality between NAIs and NDIs were attributed to contrasting physical processes during adsorption and desorption. Both, SSA and various multifractal parameters estimated from NAIs and NDIs differentiated between soils developed over either acid or basic parent material. Linear regression and principal component analysis (PCA) showed increasing carbon content decreased scaling heterogeneity and increased persistence of both, NAIs and NDIs. On the other hand, increasing clay content showed a trend to increase scaling heterogeneity and to decrease persistence during the adsorption and desorption phases. MenosMultifractal analysis was used to quantify the inner structure of both nitrogen adsorption (NAI) and desorption (NDI) isotherms. The former showed higher scaling heterogeneity and were less persistent than the later. Multifractal parameters gathered from NAIs and NDIs provided more information than specific surface area (SSA) estimates and best correlated with organic carbon and clay content and, respectively. Nitrogen adsorption isotherms (NAI) and Nitrogen desorption isotherms (NDI) are commonly used to evaluate specific surface area (SSA) of soils and other materials. Scaling analysis of N2 isotherms yield complementary information about the complexity of the soil surface. We evaluated the specific surface area (SSA) and examined the scaling properties of NAIs and associated NDIs from clayey soils, rich in organic matter sampled in Santa Catarina State, Brazil. Sixty six soil horizons were sampled in 13 profiles. Ten of these profiles were developed over volcanic rocks with a wide range of mineralogical composition. Clay content and cation exchange capacity (CEC) showed a weak positive correlation to SSA, which was attributed to variable clay mineralogy. Organic carbon content showed a weak negative correlation to SSA. Both NAIs and NDIs exhibited multifractal behavior, but its scaling properties were different so that adsorption isotherms showed higher scaling heterogeneity and were less evenly distributed measures than desorption isotherm. Also, parameterization by the ... Mostrar Tudo |
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Thesagro: |
Adsorção; Análise; Nitrogênio. |
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Thesaurus NAL: |
Adsorption; Desorption; Nitrogen; Sorption isotherms. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02955naa a2200253 a 4500
001 1965052
005 2019-05-23
008 2013 bl uuuu u00u1 u #d
024 7 $a10.2136/vzj2012.0203$2DOI
100 1 $aPAZ-FERREIRO, J.
245 $aSpecific surface area and multifractal parameters of associated nitrogen adsorption and desorption isotherms in soils from Santa Catarina, Brazil.$h[electronic resource]
260 $c2013
520 $aMultifractal analysis was used to quantify the inner structure of both nitrogen adsorption (NAI) and desorption (NDI) isotherms. The former showed higher scaling heterogeneity and were less persistent than the later. Multifractal parameters gathered from NAIs and NDIs provided more information than specific surface area (SSA) estimates and best correlated with organic carbon and clay content and, respectively. Nitrogen adsorption isotherms (NAI) and Nitrogen desorption isotherms (NDI) are commonly used to evaluate specific surface area (SSA) of soils and other materials. Scaling analysis of N2 isotherms yield complementary information about the complexity of the soil surface. We evaluated the specific surface area (SSA) and examined the scaling properties of NAIs and associated NDIs from clayey soils, rich in organic matter sampled in Santa Catarina State, Brazil. Sixty six soil horizons were sampled in 13 profiles. Ten of these profiles were developed over volcanic rocks with a wide range of mineralogical composition. Clay content and cation exchange capacity (CEC) showed a weak positive correlation to SSA, which was attributed to variable clay mineralogy. Organic carbon content showed a weak negative correlation to SSA. Both NAIs and NDIs exhibited multifractal behavior, but its scaling properties were different so that adsorption isotherms showed higher scaling heterogeneity and were less evenly distributed measures than desorption isotherm. Also, parameterization by the Hurst exponent indicates NAIs were less persistent than NDIs. Differences in multifractality between NAIs and NDIs were attributed to contrasting physical processes during adsorption and desorption. Both, SSA and various multifractal parameters estimated from NAIs and NDIs differentiated between soils developed over either acid or basic parent material. Linear regression and principal component analysis (PCA) showed increasing carbon content decreased scaling heterogeneity and increased persistence of both, NAIs and NDIs. On the other hand, increasing clay content showed a trend to increase scaling heterogeneity and to decrease persistence during the adsorption and desorption phases.
650 $aAdsorption
650 $aDesorption
650 $aNitrogen
650 $aSorption isotherms
650 $aAdsorção
650 $aAnálise
650 $aNitrogênio
700 1 $aLUZ, L. R. Q. P. da
700 1 $aLADO, M.
700 1 $aVÁZQUEZ, E. V.
773 $tVadose Zone Journal$gv. 12, n. 3, 2013.
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