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Fertilizer standards for controlling groundwater nitrate pollution from agriculture: El Salobral-Los Llanos case study, Spain

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Fertilizer standards for controlling groundwater nitrate pollution from agriculture: El Salobral-Los Llanos case study, Spain

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dc.contributor.author Peña Haro, Salvador es_ES
dc.contributor.author Llopis Albert, Carlos es_ES
dc.contributor.author Pulido-Velazquez, M. es_ES
dc.contributor.author Pulido Velázquez, David es_ES
dc.date.accessioned 2016-04-28T12:45:54Z
dc.date.available 2016-04-28T12:45:54Z
dc.date.issued 2010-10-15
dc.identifier.issn 0022-1694
dc.identifier.uri http://hdl.handle.net/10251/63111
dc.description.abstract [EN] Although the legislation on groundwater quality targets pollutant concentration, the effects of measures on non-point source pollution control are often evaluated in terms of their emission reduction potential at the source, not on their capacity of reducing the pollutant concentration in groundwater. This paper applies a hydro-economic modelling framework to an aquifer, El Salobral-Los Llanos aquifer (Mancha Oriental, Spain), where nitrate concentrations higher than those allowed by the EU Water Framework Directive and Groundwater Directive are locally found due to the intense fertilizer use in irrigated crops. The approach allows defining the economically optimal allocation of spatially variable fertilizer standards in agricultural basins using a hydro-economic model that links the fertilizer application with groundwater nitrate concentration at different control sites while maximizing net economic benefits. The methodology incorporates results from agronomic simulations, groundwater flow and transport into a management framework that yields the fertilizer allocation that maximizes benefits in agriculture while meeting the environmental standards. The cost of applying fertilizer standards was estimated as the difference between the private net revenues from actual application and the scenarios generated considering the application of the standards. Furthermore, the cost of applying fertilizer standards was compared with the cost of taxing nitrogen fertilizers in order to reduce the fertilizer use to a level that the nitrate concentration in groundwater was below the limit. The results show the required reduction of fertilizer application in the different crop areas depending on its location with regards to the control sites, crop types and soil-plant conditions, groundwater flow and transport processes, time horizon for meeting the standards, and the cost of implementing such a policy (as forgone benefits). According to the results, a high fertilizer price would be required to reduce nitrate concentrations in groundwater below the standard of 50 mg/l. In this particular case, it is more cost-efficient to apply standards to fertilizer use than taxes, although the instrument of fertilizer standards is more difficult to implement and control. (C) 2010 Elsevier B.V. All rights reserved. es_ES
dc.description.sponsorship The study was partially funded by the European Community 7th Framework Project GENESIS (226536) on groundwater systems and by the Spanish national research project "Sostenibilidad y adaptacion de sistemas de recursos hidricos a escenarios futuros a largo plazo" from the Plan Nacional I+D+I 2008-2011 of the Spanish Ministry of Science and Innovation (subprojects CGL2009-13238-C02-01 and CGL2009-13238-C02-02). The authors would like to thank the Junta Central de Regantes de la Mancha Oriental, the Jucar River Basin Authority-Conferacion Hidrografica del Jucar (specially to Oficina de Planificacion Hidrologica y Comisaria de Aguas), and to the Instituto de Desarrollo Regional (Universidad de Castilla La Mancha) for providing access to the required local data and information, also to Dr. Andres Sahuquillo and Dr. Joaquin Andreu (Tech. Univ. of Valencia, Spain), and Dr. Frank Ward (New Mexico State Univ., US) for their comments and advice on an early version of this work. We are also grateful to the EAWAG Swiss Federal Institute of Aquatic Science and Technology and to Dr. Hong Yang and Dr. Junguo Liu for their support with the GEPIC model. Finally, the authors thank three anonymous reviewers for their suggestions for improving the paper. en_EN
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation MICINN/CGL2009-13238-C02-01 es_ES
dc.relation MICINN/CGL2009-13238-C02-02 es_ES
dc.relation.ispartof Journal of Hydrology es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Groundwater es_ES
dc.subject Nitrate pollution es_ES
dc.subject Fertilizer standards es_ES
dc.subject Optimization es_ES
dc.subject Management es_ES
dc.subject EU water framework directive es_ES
dc.subject.classification INGENIERIA MECANICA es_ES
dc.subject.classification INGENIERIA HIDRAULICA es_ES
dc.title Fertilizer standards for controlling groundwater nitrate pollution from agriculture: El Salobral-Los Llanos case study, Spain es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.jhydrol.2010.08.006
dc.relation.projectID info:eu-repo/grantAgreement/EC/FP7/226536 es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ingeniería Hidráulica y Medio Ambiente - Departament d'Enginyeria Hidràulica i Medi Ambient es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ingeniería Mecánica y de Materiales - Departament d'Enginyeria Mecànica i de Materials es_ES
dc.description.bibliographicCitation Peña Haro, S.; Llopis Albert, C.; Pulido-Velazquez, M.; Pulido Velázquez, D. (2010). Fertilizer standards for controlling groundwater nitrate pollution from agriculture: El Salobral-Los Llanos case study, Spain. Journal of Hydrology. 392(3-4):174-187. doi:10.1016/j.jhydrol.2010.08.006 es_ES
dc.description.accrualMethod Senia es_ES
dc.relation.publisherversion http://dx.doi.org/10.1016/j.jhydrol.2010.08.006 es_ES
dc.description.upvformatpinicio 174 es_ES
dc.description.upvformatpfin 187 es_ES
dc.type.version info:eu repo/semantics/publishedVersion es_ES
dc.description.volume 392 es_ES
dc.description.issue 3-4 es_ES
dc.relation.senia 40966 es_ES
dc.contributor.funder European Commission
dc.contributor.funder Ministerio de Ciencia e Innovación


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