Monitoramento De Qualidade De Água: Suporte Para Gestão Ambiental Na Microbacia Do Córrego Da Olaria

Martins, Antonio Lúcio Mello; Lopes, Maria da Conceição; Simedo, Mariana Bárbara Lopes

doi:10.17271/1980082711620151253

Cited by 2 publications

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References 4 publications

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“…River basins are areas drained by a river or a river system that flows into a common location where rainwater flows superficially or seeps into the soil, forming springs and watercourses and recharging the groundwater (Furlan et al 2016). Since the beginning, as human life settled on the banks of rivers and developed their urban and industrial agglomerations, the river basins began to serve as containers for pollutants derived from land and the atmosphere (Martins et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Influence of watershed land use on water quality in the state of Santa Catarina, Brazil

Vieira

Ribeiro

2022

GES

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The inappropriate use of water resources by human actions compromises the balance between natural and anthropogenic factors. In this study, exploratory and field research were conducted with a scope of quantifying, based on satellite imaging, the use and occupation of land on the banks of the Itajaí-Açu River, the largest watercourse in the Itajaí River Basin, located in the State of Santa Catarina, Brazil. Five sampling points were allocated along the river at different times of the year to analyze water quality using chemical and biological indicators. The characterization of land use and occupation was carried out with Sentinel-2B satellite images at 10m resolution and QGIS software. Version 3.6.3 of the R Software was used to consolidate the data. The land use was categorized into several classes, the most representative of which was vegetation, which presented coverage of 34.42%, followed by the pastures and open fields class, with 27.83%, agriculture, with 18.18%, and urban areas, with 16.59% coverage. Our study showed that 62.6% of the river’s base was affected by anthropogenic influence, characterizing an environment severely altered from its normal state. The results obtained in the statistical analysis revealed a directional correlation between land use and water quality, thus indicating that cities on the banks of watercourses are major sources of potential contaminants. Among the classes of land use, the presence of vegetation along the riverside territory attenuated part of the load of pollutants launched into the Itajaí-Açu River. This finding highlights the importance of conserving the vegetation alongside the river to maintain water quality and, consequently, preserve the ecosystem’s biota.

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Section: Introductionmentioning

confidence: 99%

Influence of watershed land use on water quality in the state of Santa Catarina, Brazil

Vieira

Ribeiro

2022

GES

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“…Por serem consideradas como unidade de planejamento ou unidade espacial, no qual um conjunto de terras topograficamente drenadas por um curso d'água e seus afluentes são integrados a uma área de terra, emerge a preocupação com o seu manejo e manutenção salutar dos recursos (MARTINS; LOPES; SIMEDO, 2015).…”

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Influência do uso e ocupação do solo na qualidade da água no rio ItajaÍ-Açu, Santa Catarina

Vieira

Ribeiro²

2021

Rev. Geogr. (Recife, Online)

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Os usos inapropriados dos recursos hídricos pelas ações antropogênicas, colocam em risco o equilíbrio entre os fatores naturais e antrópicos. Nesse ensejo, o presente trabalho tem como objetivo entender quais são as relações entre o uso e ocupação do solo e qualidade da água, ao longo do rio Itajaí-Açu, o maior curso d’água da bacia hidrográfica do rio Itajaí, localizado no Estado de Santa Catarina. Para análise da qualidade da água, foram coletadas 80 amostras, nos indicativos químicos e biológicos, entre a primavera/2019 e inverno/2020. A caracterização do uso e ocupação do solo foi executada com imagens obtidas no site da Copernicus Open Access Hub, satélite Sentinel 2, sensor de 10m e processadas no software Qgis, versão 2.18, classificação supervisionada. Objetivando consolidar a pesquisa, efetuou-se a correlação estatística no Software Estatístico R, versão 3.6.3. Os resultados obtidos apontaram para a contaminação química e biológica significativa ao longo de todo o curso hídrico, bem como a contaminação biológica à montante da confluência do rio. A falta de saneamento básico e a ausência ou precariedade de um plano de gestão para o uso adequado do solo nos municípios às margens do rio Itajaí-Açu ficou evidenciado na presente pesquisa.

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Monitoramento De Qualidade De Água: Suporte Para Gestão Ambiental Na Microbacia Do Córrego Da Olaria

Cited by 2 publications

References 4 publications

Influence of watershed land use on water quality in the state of Santa Catarina, Brazil

Influence of watershed land use on water quality in the state of Santa Catarina, Brazil

Influência do uso e ocupação do solo na qualidade da água no rio ItajaÍ-Açu, Santa Catarina

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