Solos sob vegetação de restinga na Ilha do Cardoso (SP): II - Mineralogia das frações silte e argila

Gomes, Felipe Haenel; Vidal‐Torrado, Pablo; Macı́as, Felipe; Júnior, Valdomiro Severino de Souza; Otero, Xosé Luís

doi:10.1590/s0100-06832007000600034

Cited by 18 publications

(10 citation statements)

References 18 publications

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“…The selected profiles contained large amounts of S in comparison with other podzols from the literature that were reported to contain from 1.91 to 0.36% S. Enrichment of humic substances by sulfur has been observed in anoxic environments via reaction of reduced sulfur (mainly H 2 S) with organic matter that release several types of organosulfur compounds (Casagrande et al, 1977;Feldelman et al, 1991;Brüchert and Pratt, 1996;Heitmann and Blodau, 2006). The typical smell of "rotten eggs" indicated the H 2 S in the soils, and the low pH and the low Fe sesquioxide concentrations (Gomes et al, 2007b) favoured the formation and stability of H 2 S.…”

Section: Chemical and Spectroscopic Characterization Of Humic Acidsmentioning

confidence: 90%

13C NMR and FTIR spectroscopy characterization of humic acids in spodosols under tropical rain forest in southeastern Brazil

González-Pérez

Vidal‐Torrado²,

Colnago

et al. 2008

Geoderma

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Section: Chemical and Spectroscopic Characterization Of Humic Acidsmentioning

confidence: 90%

13C NMR and FTIR spectroscopy characterization of humic acids in spodosols under tropical rain forest in southeastern Brazil

González-Pérez

Vidal‐Torrado²,

Colnago

et al. 2008

Geoderma

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“…Isso sugere que as propriedades de dureza e estrutura maciça desses horizontes são dependentes da presença de agentes cimentantes, independentemente da presença de gibbsita. Resultados semelhantes foram descritos por Moreau (2001) e Gomes et al (2007).…”

Section: Fração Argilaunclassified

Caracterização de Espodossolos dos Estados da Paraíba e do Pernambuco, Nordeste do Brasil

Carvalho

Ribeiro²,

Júnior

et al. 2013

Rev. Bras. Ciênc. Solo

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RESUMOEstudos com Espodossolos de ambientes tropicais de tabuleiros costeiros ainda são escassos. Este trabalho visou caracterizar perfis desses solos, tanto nos tabuleiros como em uma restinga nos Estados da Paraíba e do Pernambuco, Nordeste do Brasil. O estudo foi realizado com 14 perfis, inseridos em relevo predominantemente plano e sob cultivo de cana-de-açúcar, em que foram realizadas análises físicas, químicas e mineralógicas. Com relação às condições de drenagem, a maioria dos perfis foi definida como moderada a imperfeitamente drenada, com o lençol freático presente a uma profundidade de 182, 85 e 74 cm, em três deles. A textura evidenciou-se predominantemente arenosa, com variações entre areia, areia-franca e franco-arenosa, sempre com valores da fração argila inferiores a 130 g kg -1 . Com relação às propriedades químicas, observaram-se acidez elevada, baixa saturação por bases, baixa CTC e alta saturação por Al 3+ . Alguns horizontes com cores nos matizes 10YR e 7,5YR, com valores entre 5 e 7 e cromas de 2 a 8 classificados como Bs, apresentaram teores de matéria orgânica mais altos que alguns horizontes classificados como Bhs, demonstrando a insuficiência do critério da cor para identificação desses horizontes cimentados. A mineralogia dos solos apresentou predominância de caulinita e quartzo na fração argila, com pequena representação de ilita, gibbsita, feldspato e anatásio. Nos tabuleiros, além desses minerais, também ocorreu a goethita. Na fração silte, verificou-se a predominância de quartzo e caulinita em todos os solos e, em menor expressão, anatásio, feldspato, goethita e gibbsita. Na fração areia, houve predominância do quartzo em todos os perfis, com traços de feldspato.Termos de indexação: propriedades físicas, mineralogia, tabuleiros costeiros.(1) Recebido para publicação em 22 de setembro de 2011 e aprovado em 21 de agosto de 2013.

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“…Three of the sandy Spodosols of Cardoso Island (a natural park in the state of Sao Paulo, southeastern region of Brazil; Fig. 1) investigated by Gomes et al (2007aGomes et al ( , 2007b were selected for this study. Horizon designations and classifications were changed according to Soil Survey Staff (2010).…”

Section: Materials and Methods Soils And Previous Analysesmentioning

confidence: 99%

“…The horizon sequences are given in Table 1. All profiles formed under hydromorphic conditions and are virtually Fe depleted, A description of the area, morphology of the profiles, and chemical and mineralogical data were given by Gomes et al, (2007aGomes et al, ( , 2007b. Micromorphological characteristics, the procedure used for extraction and purification of HAs, and the results of ^^C VACP/MAS NMR and FTIR spectroscopy were described in González-Pérez et al, (2008), Textures were analyzed by sieving and the pipette method (Buurman et al, 1996), Oxalate-extractable Fe and Al were also determined according to Buurman et al, (1996), Carbon and N were determined by a LECO CHN-1000 CN analyzer.…”

Section: Materials and Methods Soils And Previous Analysesmentioning

confidence: 99%

“…Bénites et al, (1999) did a first characterization of H As from a Brazilian Spodosol, but in the variable environment of Spodosols, investigations of single samples are not conclusive. Gomes et al (2007aGomes et al ( , 2007b studied the podzols ofthe Sao Paulo coastal plain. The HA chemistry of some profiles from those studies was investigated by Gonzalez Pérez et al, (2008) using •'C variable amplitude cross-polarization magic angle spinning nuclear magnetic resonance ('^C VACP/MAS NMR) spectroscopy and Fourier-transform infrared (FTIR) spectroscopy.…”

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confidence: 99%

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Pyrolysis‐Gas Chromatography/Mass Spectrometry Characterization of Humic Acids in Coastal Spodosols from Southeastern Brazil

González-Pérez

Buurman²,

Vidal‐Torrado³

et al. 2012

Soil Science Soc of Amer J

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This study on humic acids (HAs) of podzol horizons from the southeastern region of Brazil investigated the accumulation and degradation of soil organic matter (SOM) in warm-climate podzols. Humic acids from sandy coastal Spodosols (Histic Alaquod and Arenic Alorthod) from Cardoso Island in Sao Paulo State were characterized by pyrolysis in combination with gas chromatography and mass spectrometry (Py-GC/MS). The soils developed on quartzitic, sandy, nutrient-poor parent materials under restinga forest in a coastal area. The Py-CC/MS results show that the chemical composition of HAs in B horizons in one out of three profiles was influenced by both dissolved organic C (DOC) and C from in situ decaying roots. Carbon derived from DOC dominated in the deepest part of the B horizons. In the Arenic Alorthod (H9) profile, SOM from the B horizon seemed to be largely derived from roots. The DOC-derived SOM was characterized by large contributions of phenol, methylphenols, and degraded polysaccharide products, while root contributions were mainly characterized by lignin products. Aliphatics were most abundant in A horizons (E and EB horizons were not analyzed). Both DOC-derived and lignin-derived SOM showed distinct degradation patterns. The Py-GC/MS results corroborate those obtained by ^^C variable amplitude cross polarization magic angle spinning nuclear magnetic resonance spectroscopy and Fourier-transform infrared spectroscopy. Molecular chemistry showed that podzol B horizons are variable in composition, and local influences, such as drainage and vertical or lateral water transport, and SOM decomposition play an important role in podzolization processes in warm climates.Abbreviations: DOC, dissolved organic carbon; FTIR, Eourier-transform infrared; HA, humic acid; OM, organic matter; Py-CC/MS, pyrolysis in combination with gas chromatography and mass spectrometry; SOM, soil organic matter; VACP/MAS NMR, variable amplitude cross polarization and magic angle spinning nuclear magnetic resonance.T he podzolization process in temperate regions has been investigated for a long time (Petersen, 1976;Chesworth and Macias-Vasquez, 1985;van Breemen and Buurman, 2002; Buutman et al., 2005). Although Spodosols of tropical and temperate climates are identified by the same set of tules, their genèses are different, and this aspect has hardly been investigated. Podzols, ot Spodosols, in general, ate characterized by a typical horizon sequence: an organic surface O horizon followed by a mineral A horizon, a weathered albic eluvial E horizon, and a dark brownish-reddish illuvial B horizon (Bh, Bhs, ot Bs), which is characterized by an accumulation of Al, Fe, ot both with varying amounts of otganic mattet (Wilcken et al., 1997; Soil Survey Staff, 1999;van Breemen and Buurman, 2002).

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Solos sob vegetação de restinga na Ilha do Cardoso (SP): II - Mineralogia das frações silte e argila

Cited by 18 publications

References 18 publications

13C NMR and FTIR spectroscopy characterization of humic acids in spodosols under tropical rain forest in southeastern Brazil

13C NMR and FTIR spectroscopy characterization of humic acids in spodosols under tropical rain forest in southeastern Brazil

Caracterização de Espodossolos dos Estados da Paraíba e do Pernambuco, Nordeste do Brasil

Pyrolysis‐Gas Chromatography/Mass Spectrometry Characterization of Humic Acids in Coastal Spodosols from Southeastern Brazil

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