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| Silva Neto,Eduardo Carvalho da; Santos,Jaqueline Jesus Santana dos; Pereira,Marcos Gervasio; Maranhão,Deyvid Diego Carvalho; Barros,Fabiana da Costa; Anjos,Lúcia Helena Cunha dos. |
| ABSTRACT: Records of changes in the phytosociological structure of vegetation can be observed more clearly in soils that have more significant accumulation of organic matter, like those occurring in high-mountain environments. The aim of this study was to characterize soils formed in high-mountain environments in the Itatiaia National Park (INP), state of Rio de Janeiro, southeastern Brazil, and to discuss the potential of preserved phytoliths as markers of vegetative history and environmental factors. Four profiles were selected, which were morphologically described and evaluated for their physical and chemical properties. For phytolith analysis and high-resolution determination of the stable carbon isotopes, samples were collected at 0.10 m intervals.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil memory; Pedogenesis; Histosols; Folist soils; Organic matter. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832018000100312 |
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| 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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| Filipová,Ladislava; Hédl,Radim; Covacevich C.,Nilo. |
| The wetland meadows and pastures (vegas) of the agricultural zone of the Magallanes Region and the Chilean Patagonia are productive and intensively exploited ecosystems. However, there is scarce data about the typology and the physical and chemical properties of the soils that determine the agricultural potential of vegas sites. Sampling of the main horizons of 47 soil profiles was conducted throughout the area. The profiles were described in the field and consequently classified according to the soil typology system of the WRB (IUSS Working Group WRB, 2006). Analyses of bulk and particle densities, capillary water capacity, pH (H2O), pH (CaCl2), texture, organic material, C:N ratio, electrical conductivity, effective cation exchange capacity, N, P,... |
| Tipo: Journal article |
Palavras-chave: Histosols; Fluvisols; Peat; Soil properties; Salinization; Soil degradation. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000200010 |
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