Estudo geoambiental do município de Bom Jardim - RJ, com suporte de geotecnologias: subsídios ao planejamento de paisagens rurais montanhosas

Filho, B. Calderano; Polivanov, Helena; Guerra, Antônio; Chagas, C. da S.; Júnior, Waldir de Carvalho; Calderano, S. B.

doi:10.1590/s1982-45132010000100005

Cited by 5 publications

(2 citation statements)

References 7 publications

(4 reference statements)

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“…The lithology consists of rocks from the Rio Negro complex (orthogneisses and migmatites) (Matos et al, 1980). The parent material comprises the product of alteration of the rocks mentioned, as well as colluviums transported in different phases (Calderano Filho et al, 2010). In the lowland, the material is composed of sandy clay sediments, comprising different alluvial and colluvial deposits.…”

Section: Methodsmentioning

confidence: 99%

Soils Developed on Geomorphic Surfaces in the Mountain Region of the State of Rio de Janeiro

Fontana

Chagas

Donagemma

et al. 2018

Rev. Bras. Ciênc. Solo

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The evaluation of soils in representative landscapes constitutes an opportunity to evaluate spatial distribution, discuss formation processes, and apply this knowledge to land use and management. In this sense, from the perspective of an environmentally diversified region, the aim of the present study is to evaluate the occurrence and understand the formation of soils in different geomorphic surfaces of a landscape from a mountain region in the state of Rio de Janeiro. The study was developed in the Pito Aceso microbasin in the municipality of Bom Jardim, composed of narrow valleys and a rugged mountain domain, with elevation between 640 and 1,270 m. In a representative landscape, the geomorphic surfaces were obtained from the slope segments and flow lines. On the geomorphic surfaces, soil profiles were described by their morphological properties, collected, and analyzed to describe the chemical and physical properties of each horizon. Geomorphological aspects and possible variations of the parent material directly affected pedogenesis and led to distinct soil classes in the landscape. Variation in the geomorphic surfaces directs the processes for soil formation under current conditions, as well as the preservation of polygenetic soils. Soils of lower development and with greater participation of the exchangeable cations were identified at the summit (talus deposit) (Neossolo Litólico and Cambissolo Húmico) and toeslope (colluvial-alluvial) (Neossolo Flúvico), whereas more developed soils with lower nutrient content occur in the concave (Argissolos Vermelho and Amarelo) and convex (Latossolo Amarelo) backslope, except for the Argissolo Vermelho-Amarelo in the shoulder, which had high exchangeable cations contents.

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Section: Methodsmentioning

confidence: 99%

Soils Developed on Geomorphic Surfaces in the Mountain Region of the State of Rio de Janeiro

Fontana

Chagas

Donagemma

et al. 2018

Rev. Bras. Ciênc. Solo

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“…The studied area belongs to the Mountain Region of the Rio de Janeiro State, being inserted in the Geomorphological Unit denominated Reverse of the Hills and Coastal Massifs of the Serra dos Órgãos Plateau. It presents a predominant domain of elevated hills and mountains with occurrence of smooth relief alveoli, subordinated to the mountainous domain (Calderano et al, 2010), whose relief varies from 500 to 900 meters of altitude.…”

Section: Study Areamentioning

confidence: 99%

Analysis of the Water Quality Index of the Negro and Resende Rivers in Duas Barras District, Rio De Janeiro (Brazil) / Análise Do Índice De Qualidade Das Águas Dos Rios Negro E Resende No Distrito Sede De Duas Barras, Rio De Janeiro (Brasil)

et al. 2018

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In Brazil, about 49% of the population does not have access to the sewage collection network, with the consequent direct discharge of their sewage network into water bodies. Due to this scenario, it is essential to investigate the quality of the water consumed by thousands of people along the Negro and Resende Rivers. The present study analysis the waters of the Negro and Resende rivers, located in Dois Rios River Basin, in the municipality of Duas Barras, Rio de Janeiro State (RJ, SE Brazil), based on the Water Quality Index proposed by the National Sanitation Foundation (United States). The population of the district located in the municipality of Duas Barras dumps the domestic sewage directly into the hydrographic network. The analyzed parameters were: turbidity, total solid residue, total phosphorus, total nitrogen, biochemical oxygen demand (BOD), hydrogenation potential, temperature, dissolved oxygen and thermotolerant coliforms. The values obtained from the calculation of the Water Quality Index (WQI) showed a variation from 40 to 68, meaning that the quality of water vary between bad and acceptable in the study area. The samples collected in the urban area contained values for thermotolerant coliforms in disagreement with the maximum value permissible for classes 2 and 3 of fresh water by CONAMA (Conselho Nacional do Meio Ambiente; a Brazilian Council for the Environment) Resolution 357/2005. The results of the analyzes confirmed the contamination of the two rivers by the discharge of domestic effluents, showing that actions are necessary to eliminate or minimize the discharge of sewage in the surveyed water bodies, since it may cause public health risks. ResumoNo Brasil, cerca de 49% da população não possui acesso à rede de coleta de esgoto, com o consequente despejo direto da sua rede de esgotos em corpos hídricos. Diante deste cenário, torna-se indispensável investigar a qualidade da água consumida por milhares de pessoas ao longo dos rios Negro e Resende. A presente pesquisa analisou qualitativamente as águas dos rios Negro e Resende, localizados na Bacia Hidrográfica do Rio Dois Rios, no município de Duas Barras/RJ, a partir do índice de qualidade das águas proposto pela National Sanitation Foundation. A população do distrito sede do município de Duas Barras despeja o esgoto doméstico diretamente na referida rede hidrográfica. Os parâmetros analisados foram: turbidez, resíduo sólido total, fósforo total, nitrogênio total, demanda bioquímica de oxigênio, potencial hidrogêniônico, temperatura, oxigênio dissolvido e coliformes termotolerantes. Os valores obtidos no cálculo do índice de qualidade das águas (IQA) mostraram uma variação de 40 a 68, significando uma qualidade da água entre ruim e razoável. As amostras coletadas na área urbana apresentaram valores para coliformes termotolerantes em desacordo com o valor máximo permitido para classes 2 e 3 de água doce, regulamentados pela Resolução CONAMA 357/2005. O resultado das análises confirmou a contaminação dos dois rios pelo lançamento de efluentes domésticos, os quais poderão originar riscos de saúde pública. Os resultado evidenciam a necessidade de se desenvolverem ações para eliminar ou minimizar os despejos de esgotos nos referidos corpos hídricos.

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Geoenvironmental mapping and integrated analysis of the units within a protected area: municipality of Delfinópolis and the Serra da Canastra National Park, Brazil

2021

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Estudo geoambiental do município de Bom Jardim - RJ, com suporte de geotecnologias: subsídios ao planejamento de paisagens rurais montanhosas

Cited by 5 publications

References 7 publications

Soils Developed on Geomorphic Surfaces in the Mountain Region of the State of Rio de Janeiro

Soils Developed on Geomorphic Surfaces in the Mountain Region of the State of Rio de Janeiro

Analysis of the Water Quality Index of the Negro and Resende Rivers in Duas Barras District, Rio De Janeiro (Brazil) / Análise Do Índice De Qualidade Das Águas Dos Rios Negro E Resende No Distrito Sede De Duas Barras, Rio De Janeiro (Brasil)

Geoenvironmental mapping and integrated analysis of the units within a protected area: municipality of Delfinópolis and the Serra da Canastra National Park, Brazil

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