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Registro Completo |
Biblioteca(s): |
Embrapa Solos. |
Data corrente: |
28/08/2013 |
Data da última atualização: |
23/05/2019 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
PAZ-FERREIRO, J.; LUZ, L. R. Q. P. da; LADO, M.; VÁZQUEZ, E. V. |
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. |
Título: |
Specific surface area and multifractal parameters of associated nitrogen adsorption and desorption isotherms in soils from Santa Catarina, Brazil. |
Ano de publicação: |
2013 |
Fonte/Imprenta: |
Vadose Zone Journal, v. 12, n. 3, 2013. |
DOI: |
10.2136/vzj2012.0203 |
Idioma: |
Inglês |
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 |
Thesagro: |
Adsorção; Análise; Nitrogênio. |
Thesaurus Nal: |
Adsorption; Desorption; Nitrogen; Sorption isotherms. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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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Embrapa Solos (CNPS) |
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Biblioteca(s): |
Embrapa Café; Embrapa Rondônia. |
Data corrente: |
14/03/2016 |
Data da última atualização: |
26/11/2020 |
Tipo da produção científica: |
Capítulo em Livro Técnico-Científico |
Autoria: |
SANTOS, J. C. F.; COSTA, R. S. C. da; LEONIDAS, F. das C.; PEREIRA, R. G. de A. |
Afiliação: |
ROGERIO SEBASTIAO CORREA DA COSTA, CPAF-RO; FRANCISCO DAS CHAGAS LEONIDAS, CPAF-RO; RICARDO GOMES DE ARAUJO PEREIRA, CPAF-RO. |
Título: |
Manejo de plantas daninhas. |
Ano de publicação: |
2015 |
Fonte/Imprenta: |
In: MARCOLAN, A. L.; ESPINDULA, M. C. (Ed.). Café na Amazônia. Brasília, DF: Embrapa, 2015. |
Páginas: |
Cap. 11, p. 237-253. |
Idioma: |
Português |
Conteúdo: |
O capítulo apresenta informações e opções de aplicação do manejo integrado das plantas daninhas em lavoura de Coffea canephora em formação e em produção de Rondônia. |
Palavras-Chave: |
Café conilon; Manejo de planta daninha; Planta daninha. |
Thesagro: |
Cafeicultura. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/141087/1/Cafe-na-AmazoniaSANTOS.pdf
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Marc: |
LEADER 00824naa a2200217 a 4500 001 2040714 005 2020-11-26 008 2015 bl uuuu u00u1 u #d 100 1 $aSANTOS, J. C. F. 245 $aManejo de plantas daninhas.$h[electronic resource] 260 $c2015 300 $aCap. 11, p. 237-253. 520 $aO capítulo apresenta informações e opções de aplicação do manejo integrado das plantas daninhas em lavoura de Coffea canephora em formação e em produção de Rondônia. 650 $aCafeicultura 653 $aCafé conilon 653 $aManejo de planta daninha 653 $aPlanta daninha 700 1 $aCOSTA, R. S. C. da 700 1 $aLEONIDAS, F. das C. 700 1 $aPEREIRA, R. G. de A. 773 $tIn: MARCOLAN, A. L.; ESPINDULA, M. C. (Ed.). Café na Amazônia. Brasília, DF: Embrapa, 2015.
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