NDLI: Land use and groundwater quality : The case of Baixo Acaraú Irrigated Perimeter , Brazil 1 Uso da terra e qualidade das águas subterrâneas : caso do Perímetro Irrigado Baixo Acaraú , Brasil

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Land use and groundwater quality : The case of Baixo Acaraú Irrigated Perimeter , Brazil 1 Uso da terra e qualidade das águas subterrâneas : caso do Perímetro Irrigado Baixo Acaraú , Brasil

Content Provider	Semantic Scholar
Author	Andrade, Eunice Maia De Lopes, Fernando Bezerra Palácio, Helba Araújo Queiroz Nascimento, Deodato Do Aquino Alexandre, Deborah Mithya Barros
Copyright Year	2010
Abstract	The aim of this work was to identify and to investigate the determining factors of water table quality in the Irrigated Perimeter of Baixo Acaraú, Ceará, Brazil, using factor analysis/principal component analysis (FA/PCA). It was sampled nine shallow wells spread out on two different types of land: uncultivated area (A1) and irrigated area (A2). Groundwater was sampled monthly from Dec/2003 to Nov/2005, Nov/2006, Mar and April/2007. We measured the following parameters: pH, electrical conductivity (EC), and concentrations of Na, Ca, Mg, K, Cl, PO 4 , NH 4 , NO 3 , SO 4 , HCO 3 and CO 3 . The PCA resulted in a model composed of three components that explained 93.06% and 83.72% of the total variance of the data set from A1 and A2, respectively. It was found that the determining factors of water quality were the mineralization processes and anthropogenic activities in both areas. The anthropogenic activities in the irrigated area were related to nitrogenous fertilizers, while those in the uncultivated area were associated with the presence of septic tanks (from the lack of sewage treatment).
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://www.ccarevista.ufc.br/seer/index.php/ccarevista/article/download/635/447
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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