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Título: | Groundwater quality in CR-V irrigation district (Bardenas I, Spain): Alternative scenarios to reduce off-site salt and nitrate contamination |
Autor: | Causapé Valenzuela, Jesús Antonio; Quílez Sáez de Viteri, Dolores CSIC ORCID; Aragüés Lafarga, Ramón CSIC | Palabras clave: | Agriculture Groundwater Contamination Salinity Nitrates |
Fecha de publicación: | ago-2006 | Editor: | Elsevier | Citación: | Agricultural Water Management 84 (3): 281–289 (2006) | Resumen: | Irrigated agriculture may negatively affect groundwater quality and increase off-site salt and nitrate contamination. Management alternatives aimed at reducing these potential problems were analysed in the 15498 ha CR-V Irrigation District (Spain) by monitoring 49 wells and modelling the hydrological regime in a representative well of the Miralbueno Aquifer. Groundwaters presented low to moderate electrical conductivity (EC) (mean = 0.89 dS/m) and high [NO3−] (mean = 94 mg/L). The groundwater depth (GWD) during the 2001 hydrological year responded to the annual cycles of precipitation and irrigation as well as to the secondary cycles derived from irrigation scheduling. GWD were consistently simulated by the groundwater BAS-A model. Model results indicate that an increase in irrigation efficiency and the pumping of groundwater for irrigation will decrease GWD and aquifer's discharge by 56–70%, depending on scenarios. These recommendations will save good-quality water in the reservoir, will be beneficially economical to farmers, and will minimize off-site salt and nitrogen contamination. | Descripción: | 9 Pags.- 6 Figs. | Versión del editor: | http://dx.doi.org/10.1016/j.agwat.2006.03.004 | URI: | http://hdl.handle.net/10261/115217 | DOI: | 10.1016/j.agwat.2006.03.004 | ISSN: | 0378-3774 |
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