Regional assessment of evaporation from agricultural irrigation reservoirs in a semiarid climate
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Martínez Álvarez, Victoriano; González Real, María Milagros; Baille, Alain Daniel; Maestre Valero, José Francisco; Gallego Elvira, BelénÁrea de conocimiento
Ingeniería AgroforestalPatrocinadores
The authors acknowledge the Fundación Séneca (Murcia, Spain) for the financial support of this study through the grant 02978/PI/05 and the remote sensing and GIS section of the Instituto de Desarrollo Regional (Universidad de Castilla-La Mancha) for their collaboration in the photointerpretation.Fecha de publicación
2008-09Editorial
ElsevierCita bibliográfica
V. Martínez Alvarez, M.M. González-Real, A. Baille, J.F. Maestre Valero, B. Gallego Elvira, Regional assessment of evaporation from agricultural irrigation reservoirs in a semiarid climate, Agricultural Water Management, 2008, Volume 95, Issue 9,1056-1066, https://doi.org/10.1016/j.agwat.2008.04.003.Revisión por pares
siPalabras clave
Storage efficiencyClass-A pan
Pan coefficient
Water loss
Water management
Resumen
The aim of this study was to assess the magnitude of evaporation loss from the agricultural water reservoirs (AWRs) for irrigation at a regional scale and to analyze its impact on water storage efficiency. To this end, we identified the extant AWRs for irrigation in the Segura River Basin (SRB) in southeastern Spain, and calculated the water loss from each AWR per month and year. In order to accomplish this, we determined the monthly and yearly values of the pan coefficient, Kp, taking into account the geometric dimensions (area and depth) of the AWRs and local climate conditions through a function of air vapour pressure deficit (VPD). AWR areas were identified by interpreting aerial images, while climate conditions were assessed using daily meteorological data obtained from 74 automated agro-meteorological stations located in irrigated areas. Regional evaporation losses were estimated using aggregation GIS techniques. A total of 14,145 AWRs covering 4901 ha were identified, which ...
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