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<sup>13</sup>C NMR and FTIR spectroscopy characterization of humic acids in spodosols under tropical rain forest in southeastern Brazil
ArticleAbstract: The aim of the present study was to characterize the humic acids (HAs) in spodosols developed on quaPalabras claves:Podzolization, soil organic matter, spectroscopy, Tropical podzolsAutores:Colnago L.A., Gomes F.H., González-Pérez M., Martin-Neto L., Milori D.M.B.P., Vidal-Torrado P., Xosé Luis Otero PérezFuentes:scopusSoils under restinga vegetation on the Cardoso Island (SP). I - Characterization and classification
ArticleAbstract: Restinga is a typical vegetation on quartzitic, sandy, nutrient-poor parent materials along the BrazPalabras claves:Acid sulphate soils, Podzolization, Restinga vegetation, SpodosolsAutores:Gherardi B., Gomes F.H., Vázquez F.M., Vidal-Torrado P., Xosé Luis Otero PérezFuentes:scopusSoils under restinga vegetation on the Cardoso Island (SP). II - Mineralogy of siltand clayfractions
ArticleAbstract: Restinga is a typical vegetation on quartzitic, sandy, nutrient-poor parent materials along the BrazPalabras claves:Kaolinite, Podzolization, Primary minerals in soils, SpodosolAutores:Gomes F.H., Souza-Junior V.S., Vázquez F.M., Vidal-Torrado P., Xosé Luis Otero PérezFuentes:scopus