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Surface mapping, organic matter and water stocks in peatlands of the Serra do Espinhaço meridional - Brazil Rev. Bras. Ciênc. Solo
Silva,Márcio Luiz da; Silva,Alexandre Christófaro; Silva,Bárbara Pereira Christófaro; Barral,Uidemar Morais; Soares,Pablo Gomes e Souza; Vidal-Torrado,Pablo.
Peatlands are soil environments that store carbon and large amounts of water, due to their composition (90 % water), low hydraulic conductivity and a sponge-like behavior. It is estimated that peat bogs cover approximately 4.2 % of the Earth's surface and stock 28.4 % of the soil carbon of the planet. Approximately 612 000 ha of peatlands have been mapped in Brazil, but the peat bogs in the Serra do Espinhaço Meridional (SdEM) were not included. The objective of this study was to map the peat bogs of the northern part of the SdEM and estimate the organic matter pools and water volume they stock. The peat bogs were pre-identified and mapped by GIS and remote sensing techniques, using ArcGIS 9.3, ENVI 4.5 and GPS Track Maker Pro software and the maps...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Histosols; GIS; Vertical growth rate; Rate of carbon accumulation; Radiocarbon age.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000500004
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Micromorphology of Paleosols of the Marília Formation and their Significance in the Paleoenvironmental Evolution of the Bauru Basin, Upper Cretaceous, Southeastern Brazil Rev. Bras. Ciênc. Solo
Silva,Márcio Luiz da; Batezelli,Alessandro; Ladeira,Francisco Sérgio Bernardes.
ABSTRACT Deduction of associated paleoenvironments and paleoclimate, definition of the chronosequence of paleosols, and paleogeographic reconstruction have become possible through the application of micromorphology in paleopedology. Micromorphology has also been useful in recognition of weathering processes and definition of minerals formed in succession. In this respect, the objective of this study was to identify the development of pedogenic processes and discuss their significance in the paleoclimate evolution of the Marília Formation (Maastrichtian) of Bauru Basin. Three sections of the Marília Formation (A1, A2, and A3) were described, comprising nine profiles. Micromorphologic al analysis was carried out according to the specialized literature. In...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Calcrete; C/f-related distribution; B-fabric; Pedofeatures; Paleoclimate.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100304
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