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| Santos,Adailde do Carmo; Pereira,Marcos Gervasio; Anjos,Lúcia Helena Cunha dos; Bernini,Thiago Andrade; Cooper,Miguel. |
| ABSTRACT Different parent materials participate in the formation of soils in the hilly landscape of “Mar de Morros” in the Atlantic Forest environment. Those derived from mafic igneous rock (gabbro) frequently show erosion problems because of land use, which is aggravated by the mountainous relief and soil attributes. This study evaluated the main pedogenic processes of soils formed from mafic igneous rock (gabbro) in a toposequence in Pinheiral (RJ) by characterizing physical, chemical, mineralogical and micromorphological attributes. The profiles are located at different sections in the toposequence: summit (P1), shoulder (P2), backslope (P3) and footslope (P4).They were classified according to the Brazilian System of Soil Classification (SiBCS) and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pedogenesis; SiBCS; Soil weathering. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100305 |
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| Bernini,Thiago Andrade; Pereira,Marcos Gervasio; Anjos,Lúcia Helena Cunha dos; Perez,Daniel Vidal; Fontana,Ademir; Calderano,Sebastião Barreiros; Wadt,Paulo Guilherme Salvador. |
| The variety of soils in the State of Acre is wide and their chemical profiles are still not fully understood. The nature of the material of origin of these soils is indicated by the high aluminium (Al) content, commonly associated with high calcium (Ca) and magnesium (Mg) contents. The study objective was to use different methods to quantify Al in soils from toposequences formed from material of a sedimentary nature originating from the Solimões Formation, in Acre, Brazil. Trenches were opened at three distinct points in the landscape: shoulder, backslope and footslope positions. Soil samples were collected for physical, chemical, mineralogical analyses. The Al content was quantified using different methods. High Al contents were found in most of these... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Exchangeable aluminium; Sedimentary material; Smectite; Western Amazonia. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000600015 |
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| Fontana,Ademir; Pereira,Marcos Gervasio; Anjos,Lúcia Helena Cunha dos; Santos,Adailde Carmo dos; Bernini,Thiago Andrade. |
| O objetivo deste trabalho foi quantificar o carbono orgânico e as frações húmicas de horizontes superficiais de perfis de solo em três topolitossequências no ambiente de Mar de Morros, no município de Pinheiral, RJ. Foram selecionadas as topolitossequências: T1 (basalto), T2 (muscovita-biotita-gnaisse) e T3 (gabro). Os horizontes superficiais de 14 perfis de solo, sob cobertura de pastagem (T1 e T3) e pastagem mista não manejada e leguminosa (pasto sujo/capoeira) (T2), foram descritos e coletados para análises químicas, físicas e do teor de carbono nas frações húmicas. Os teores de carbono orgânico variaram de acordo com o material de origem e decrescem na seguinte ordem: T3 > T1 > T2. Os teores de carbono orgânico aumentam do topo para a várzea na... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pedogênese; Frações húmicas; Atributos edáficos. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902014000200001 |
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