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	Provedor de dados Scientia Agricola (1) Rev. Bras. Ciênc. Solo (1) Autor Buurman,Peter (2) Vidal-Torrado,Pablo (2) Almeida,Jaime Antonio de (1) Calegari,Márcia Regina (1) Chiapini,Mariane (1) Marques,Flávio Adriano (1) Oliveira Junior,Jairo Calderari de (1) Schellekens,Judith (1) Mais... Palavra-chave Argissolos (1) Dark subsurface horizon (1) Ferralsols (1) Goethite (1) Matte aggregate faces (1) Pyrogenic carbon (1) Shiny peds (1) Soil charcoal (1) Soil organic carbon (1) Soil total carbon (1) Tropical soils (1) Umbric epipedon (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2021 (1) 2011 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Relationship between soil oxidizable carbon and physical, chemical and mineralogical properties of umbric ferralsols Rev. Bras. Ciênc. Solo Marques,Flávio Adriano; Calegari,Márcia Regina; Vidal-Torrado,Pablo; Buurman,Peter. The occurrence of Umbric Ferralsols with thick umbric epipedons (> 100 cm thickness) in humid Tropical and Subtropical areas is a paradox since the processes of organic matter decomposition in these environments are very efficient. Nevertheless, this soil type has been reported in areas in the Southeast and South of Brazil, and at some places in the Northeast. Aspects of the genesis and paleoenvironmental significance of these Ferralsols still need a better understanding. The processes that made the umbric horizons so thick and dark and contributed to the preservation of organic carbon (OC) at considerable depths in these soils are of special interest. In this study, eight Ferralsols with a thick umbric horizon (UF) under different vegetation types... Tipo: Info:eu-repo/semantics/article Palavras-chave: Ferralsols; Tropical soils; Soil total carbon; Soil organic carbon; Pyrogenic carbon; Soil charcoal; Umbric epipedon. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000100003 Sombric-like horizon and xanthization in polychrome subtropical soils from Southern Brazil: implications for soil classification Scientia Agricola Chiapini,Mariane; Oliveira Junior,Jairo Calderari de; Schellekens,Judith; Almeida,Jaime Antonio de; Buurman,Peter; Vidal-Torrado,Pablo. ABSTRACT The occurrence of dark subsurface horizons rich in organic matter (OM) associated with polychrome in the B horizon (yellowish over reddish hue) is common in soils from Southern Brazil. The formation of these horizons and the combination with such morphological attributes has not been properly documented, and neither has the cause effect relationship. Four soil profiles with such sombric-like horizons with a yellowish color at the upper part of the B horizon over red subsoil were studied in Southern Brazil. Results from micromorphology, extractable sesquioxide minerals, clay mineralogy and isomorphic substitution of Fe by Al in iron minerals showed that melanization, xanthization, bioturbation, moderate shrinking/swelling and moderate... Tipo: Info:eu-repo/semantics/article Palavras-chave: Argissolos; Goethite; Dark subsurface horizon; Shiny peds; Matte aggregate faces. Ano: 2021 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000401401 Registros recuperados: 2 Primeira ... 1 ... Última

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