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Title: Water quality index in two land use situations in the Mantiqueira Range
Other Titles: Índice de qualidade de água em duas situações de uso do solo na Serra da Mantiqueira
Keywords: Qualidade da água
Gestão de recursos hídricos
Indicadores ambientais
Análise de componentes principais
Water quality
Management of water resources
Environmental indicators
Principal components analysis
Issue Date: Jul-2013
Publisher: Universidade Federal de Lavras
Citation: PINTO, L. C. et al. Water quality index in two land use situations in the Mantiqueira Range. Ciência e Agrotecnologia, Lavras, v. 37, n. 4, p. 338-342, jul./ago., 2013.
Abstract: The use of a large number of water quality indicators increases the costs of streamflow monitoring throughout the time. Principal Component Analysis (PCA) can be considered a promised tool for water resources management, allowing a reduction in the dimensionality of the data and facilitating their analyses. This study aimed to obtain a water quality index (WQI) to characterize the Mantiqueira Range region. Water quality indicators from a sub-basin entirely occupied by Atlantic Forest and from another predominantly occupied by pasture were normalized and used to compose the WQI. The normalized values were submitted to a PCA evaluation and the WQI was then calculated. The Indicators with greatest weight, according to the PCA, were total coliform, nitrate, fecal coliform, chemical oxygen demand and temperature. The Atlantic forest sub-basin presented the best WQI results, demonstrating the importance of the forested environment in the maintenance of water quality in springs of the Mantiqueira Range region.
Appears in Collections:Ciência e Agrotecnologia
DEX - Artigos publicados em periódicos

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