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Registro Completo |
Biblioteca(s): |
Embrapa Instrumentação. |
Data corrente: |
13/08/2004 |
Data da última atualização: |
08/03/2010 |
Autoria: |
SILVA, A. C.; TORRADO, P. V.; MARTIN-NETO, L.; VASQUEZ, F. M.; GONZALEZ-PEREZ, M. |
Título: |
Soil organic matter and geomorphic surface stability relationship in an Oxisol Toposequence (SE Brazil). |
Ano de publicação: |
2004 |
Fonte/Imprenta: |
In: MARTIN-NETO, L.; MILORI, D.M.B.P.; SILVA, W.T.L. (Ed.). Humic substances and soil and water environment: International Meeting of IHSS, 12. São Carlos : Embrapa Instrumentação Agropecuária, 2004. p. 623-626. |
Idioma: |
Inglês |
Notas: |
CLASSIFICAÇÃO CDD: 630 |
Conteúdo: |
I. INTRODUCTION
Relieve is among soil formation factors, the one that contrais matter distribution in the soil system. The understanding of soil-landscape relations has been facilitated through utilization of topographic attributes, such as declivity, to establish relations with pedogenetic processes (Silva and Vidal Torrado, 1999). Accumulation and humification degree of organic matter, for example, can be correlated with soil declivity. In well-drained areas, the general rule is the smaller the declivity the bigger the rate of organic matter (OM) accumulation and humification degree, remaining constant the other soil formation factors (Silva and Vidal Torrado, 1999). Thus, the organic carbon content t would be higher as much as OM structure more complex at the summit of the slope than at back slope, where the carbon content would be lower and OM structure simpler. Thus, the content of charcoal fragments found at soil surface horizons would be higher and their radiocarbon age older, in areas with low declivity than in areas with high declivity, as the former areas suftered low influence of hydric erosion (Pessenda et al., 1996; Silva and Vidal Torrado, 1999). Riffaldi and Schnitzer (1972) report that semiquinone -type free radicais are stabilized with complex aromatic structures in humic substances. Thus, the free radical concentration of humic substances should decrease with increasing declivity and consequently the stability of geomorphic surfaces should decrease.
Declivity is an attribute of relieve that is related to the accumulation and stability of organic matter in the soil. For this reason, in this paper were quantitatively evaluated relations among declivity, the humification degree of humic acids, the charcoal fragment content and its radiocarbon age. MenosI. INTRODUCTION
Relieve is among soil formation factors, the one that contrais matter distribution in the soil system. The understanding of soil-landscape relations has been facilitated through utilization of topographic attributes, such as declivity, to establish relations with pedogenetic processes (Silva and Vidal Torrado, 1999). Accumulation and humification degree of organic matter, for example, can be correlated with soil declivity. In well-drained areas, the general rule is the smaller the declivity the bigger the rate of organic matter (OM) accumulation and humification degree, remaining constant the other soil formation factors (Silva and Vidal Torrado, 1999). Thus, the organic carbon content t would be higher as much as OM structure more complex at the summit of the slope than at back slope, where the carbon content would be lower and OM structure simpler. Thus, the content of charcoal fragments found at soil surface horizons would be higher and their radiocarbon age older, in areas with low declivity than in areas with high declivity, as the former areas suftered low influence of hydric erosion (Pessenda et al., 1996; Silva and Vidal Torrado, 1999). Riffaldi and Schnitzer (1972) report that semiquinone -type free radicais are stabilized with complex aromatic structures in humic substances. Thus, the free radical concentration of humic substances should decrease with increasing declivity and consequently the stability of geomorphic surfaces should decrease.
Dec... Mostrar Tudo |
Palavras-Chave: |
C14; dectivity; EPR; humification degree; soil charcoal; Soil humic acids. |
Categoria do assunto: |
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Marc: |
LEADER 02673naa a2200253 a 4500 001 1028581 005 2010-03-08 008 2004 bl --- 0-- u #d 100 1 $aSILVA, A. C. 245 $aSoil organic matter and geomorphic surface stability relationship in an Oxisol Toposequence (SE Brazil). 260 $c2004 500 $aCLASSIFICAÇÃO CDD: 630 520 $aI. INTRODUCTION Relieve is among soil formation factors, the one that contrais matter distribution in the soil system. The understanding of soil-landscape relations has been facilitated through utilization of topographic attributes, such as declivity, to establish relations with pedogenetic processes (Silva and Vidal Torrado, 1999). Accumulation and humification degree of organic matter, for example, can be correlated with soil declivity. In well-drained areas, the general rule is the smaller the declivity the bigger the rate of organic matter (OM) accumulation and humification degree, remaining constant the other soil formation factors (Silva and Vidal Torrado, 1999). Thus, the organic carbon content t would be higher as much as OM structure more complex at the summit of the slope than at back slope, where the carbon content would be lower and OM structure simpler. Thus, the content of charcoal fragments found at soil surface horizons would be higher and their radiocarbon age older, in areas with low declivity than in areas with high declivity, as the former areas suftered low influence of hydric erosion (Pessenda et al., 1996; Silva and Vidal Torrado, 1999). Riffaldi and Schnitzer (1972) report that semiquinone -type free radicais are stabilized with complex aromatic structures in humic substances. Thus, the free radical concentration of humic substances should decrease with increasing declivity and consequently the stability of geomorphic surfaces should decrease. Declivity is an attribute of relieve that is related to the accumulation and stability of organic matter in the soil. For this reason, in this paper were quantitatively evaluated relations among declivity, the humification degree of humic acids, the charcoal fragment content and its radiocarbon age. 653 $aC14 653 $adectivity 653 $aEPR 653 $ahumification degree 653 $asoil charcoal 653 $aSoil humic acids 700 1 $aTORRADO, P. V. 700 1 $aMARTIN-NETO, L. 700 1 $aVASQUEZ, F. M. 700 1 $aGONZALEZ-PEREZ, M. 773 $tIn: MARTIN-NETO, L.; MILORI, D.M.B.P.; SILVA, W.T.L. (Ed.). Humic substances and soil and water environment: International Meeting of IHSS, 12. São Carlos : Embrapa Instrumentação Agropecuária, 2004. p. 623-626.
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Embrapa Instrumentação (CNPDIA) |
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Registros recuperados : 13 | |
4. | | SILVA, A. C.; TORRADO, P. V.; MARTIN-NETO, L.; VASQUEZ, F. M.; GONZALEZ-PEREZ, M. Soil organic matter and geomorphic surface stability relationship in an Oxisol Toposequence (SE Brazil). In: MARTIN-NETO, L.; MILORI, D.M.B.P.; SILVA, W.T.L. (Ed.). Humic substances and soil and water environment: International Meeting of IHSS, 12. São Carlos : Embrapa Instrumentação Agropecuária, 2004. p. 623-626. CLASSIFICAÇÃO CDD: 630Biblioteca(s): Embrapa Instrumentação. |
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5. | | SILVA, A. C.; TORRADO, P. V.; MARTIN-NETO, L. VASQUEZ, F. M.; PÉREZ, M. G. Soil organic matter and geomorphic surface stability relationship in an oxisol toposequence (SE BRAZIL). In: INTERNATIONAL MEETING OF INTERNATIONAL HUMIC SUBSTANCES SOCIETY. -- IHSS, 12, São Pedro, SP, 2004. Humic substances and soil and water environment. Abstracts...[São Carlos], SP: Embrapa Instrumentação Agropecuária, 2004. p. 80.Biblioteca(s): Embrapa Instrumentação. |
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6. | | GONZÁLEZ-PÉREZ, M.; TORRADO, P. V.; MILORI, D. M. P. B.; MARTIN-NETO, L.; COLNAGO, L. A.; GOMES, F. H. Comparação por fluorescência entre ácidos húmicos e fúlvicos de espodossolos de SP. In: ENCONTRO BRASILEIRO DE SUBSTÂNCIAS HÚMICAS - EBSH, 7., 2007, Florianópolis, SC. As substâncias húmicas podem ajudar a salvar o planeta terra? Livro de resumos... Florianópolis: EBSH, 2007. p. 42.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Instrumentação. |
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7. | | PÉREZ, M. G.; TORRADO, P. V.; MARTIN-NETO, L.; COLNAGO, L. A.; MILON, D. M. P. B.; GOMES, F. H. Study of humic acids from brazilian spodosol by 13C NMR and FTIR spectroscopy. In: NUCLEAR MAGNETIC RESONANCE USERS MEETING, 10.; PORTUGUESE-BRAZILIAN NMR MEETING, 3.; IBERO AMERICAN NMR MEETING 2005, Angra dos Reis. Abstracts... Angra dos Reis: AUREMN, 2005. p. 107.Biblioteca(s): Embrapa Instrumentação. |
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8. | | GONZÁLEZ PÉREZ, M.; NUNO, C. S.; COLNAGO, L. A.; KNICKER, H.; TORRADO, P. V.; MARTIN NETO, L. Evaluation of magnetic field effect on quantification of aromatic components of humic acids by 13C CPMAS NMR. In: NUCLEAR MAGNETIC RESONANCE USERS MEETING, 11., 2007. Angra dos Reis.; WORKSHOP NMR IN SOUTH AMERICA, 2007. Angra dos Reis, RJ. Extended abstracts book... Angra dos reis, 2007. p. 101-102.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Instrumentação. |
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9. | | BEIRIGO, R. M.; BARRÓN, V.; TORRENT, J.; COUTO, E. G.; NASCIMENTO, A. F. do; TORRADO, P. V. Fogo e magnetização de óxidos de Fe em solos do Pantanal Matogrossense In: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 35., 2015, Natal. O solo e suas múltiplas funções: anais. Natal: Sociedade Brasileira de Ciência do Solo, 2015.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Agrossilvipastoril. |
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11. | | GONZÁLEZ-PÉREZ, M.; TORRADO, P. V.; COLNAGO, L. A.; MARTIN-NETO, L.; OTERO, X. L.; MILORI, D. M. B. P.; GOMES, F. H. 13C NMR and FTIR spectroscopy characterization of humic acids in spodosols under tropical rain forest in southeastern Brazil. Geoderma, Amsterdam, v. 146, p. 425-433, 2008.Tipo: Artigo em Periódico Indexado | Circulação/Nível: Internacional - A |
Biblioteca(s): Embrapa Instrumentação. |
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12. | | GONZÁLEZ-PÉREZ, M.; TORRADO, P. V.; MARTIN-NETO, L.; COLNAGO, L. A.; MILORI, D. M. B. P.; GOMES, F. H.; OTERO, X. L. Characterization of humic acids in tropical spodosols by 13C NMR spectroscopy. In: FRIMMEL, F. H.; ABBT-BRAUN, G. (Ed.). MEETING OF THE INTERNATIONAL HUMIC SUBSTANCES SOCIETY, 13TH ., 2006, Karlsruhe. Humic substances - Linking structure to functions. Proceedings... [S. l.]: IHSS, 2006. p. 149-152.Biblioteca(s): Embrapa Instrumentação. |
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13. | | DEMETRIO, W. C.; CONRADO, A. C.; ACIOLI, A. N. S.; FERREIRA, A. C.; BARTZ, M. L. C.; JAMES, S. W.; SILVA, E. da; MAIA, L. S.; MARTINS, G. C.; MACEDO, R. S.; STANTON, D. W. G.; LAVELLE, P.; VELASQUEZ, E.; ZANGERLÉ, A.; BARBOSA, R.; TAPIA-CORAL, S. C.; MUNIZ, A. W.; SANTOS, A.; FERREIRA, T.; SEGALLA, R. F.; DECAËNS, T.; NADOLNY, H. S.; PEÑA-VENEGAS, C. P.; MAIA, C. M. B. F.; PASINI, A.; MOTA, A. F.; TAUBE JÚNIOR, P. S.; SILVA, T. A. C.; REBELLATO, L.; OLIVEIRA JUNIOR, R. C. de; NEVES, E. G.; LIMA, H. P.; FEITOSA, R. M.; TORRADO, P. V.; McKEY, D.; CLEMENT, C. R.; SHOCK, M. P.; TEIXEIRA, W. G.; MOTTA, A. C. V.; MELO, V. F.; DIECKOW, J.; GARRASTAZU, M. C.; CHUBATSU, L. S.; KILLE, P.; BROWN, G. G.; CUNHA, L. A "dirty" footprint: macroinvertebrate diversity in Amazonian Anthropic soils. Global Change Biology, v. 27, n. 19, p. 4575-4591, Oct. 2021.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
Biblioteca(s): Embrapa Amazônia Ocidental; Embrapa Amazônia Oriental; Embrapa Florestas; Embrapa Solos. |
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Registros recuperados : 13 | |
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