Groundwater recharge in irrigated semi-arid areas: quantitative hydrological modelling and sensitivity analysis

For semi-arid regions, methods of assessing aquifer recharge usually consider the potential evapotranspiration. Actual evapotranspiration rates can be below potential rates for long periods of time, even in irrigated systems. Accurate estimations of aquifer recharge in semiarid areas under irrigated agriculture are essential for sustainable water-resources management. A method to estimate aquifer recharge from irrigated farmland has been tested. The water-balance-modelling approach was based on VisualBALAN v. 2.0, a computer code that simulates water balance in the soil, vadose zone and aquifer. The study was carried out in the Campo de Cartagena (SE Spain) in the period 1999–2008 for three different groups of crops: annual row crops (lettuce and melon), perennial vegetables (artichoke) and fruit trees (citrus). Computed mean-annual-recharge values (from irrigation +precipitation) during the study period were 397mm for annual row crops, 201mm for perennial vegetables and 194mm for fruit trees: 31.4, 20.7 and 20.5% of the total applied water, respectively. The effects of rainfall events on the final recharge were clearly observed, due to the continuously high water content in soil which facilitated the infiltration process. A sensitivity analysis to assess the reliability and uncertainty of recharge estimations was carried out.

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Jiménez Martínez J. Candela L. Molinero J. y Tamoh K. Groundwater recharge in irrigated semi-arid areas: quantitative hydrological modelling and sensitivity analysis. Springer Nature, 2010. https://doi.org/10.1007/s10040-010-0658-1

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Tipo de recurso Artículo
Fecha de creación 05-11-2024
Fecha de última modificación 21-01-2025
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Identificador de los metadatos 5a09523d-bbdb-5291-a180-b9eabc8e2e9a
Idioma de los metadatos Español
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Categoría del conjunto de alto valor (HVD) Observación de la Tierra y medio ambiente
Categoría temática ISO 19115 biota
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Nombre del autor Jiménez Martínez, J., Candela, L., Molinero, J. y Tamoh, K.
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Identificador alternativo DOI: 10.1007/s10040-010-0658-1
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Email del autor joaquin.jimenez@upc.edu
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