Modernization of new irrigated lands in a scenario of increasing water scarcity: from large reservoirs to small ponds
Jlassi, W. ; Nadal-Romero, E. (Universidad de Zaragoza) ; García-Ruiz, J.M.
Resumen: Large rainfed, dryland areas were transformed into irrigated land in northeast Spain, where rivers from the Pyrenees Range ensure the availability of abundant water resources. The transformation of the Riegos del Alto Aragón area (RAA), mainly during the second half of the 20th century, was subject to major problems during the 1960s and 1970s, including monoculture of poorly productive winter cereals, water wastage, and soil degradation. Since the 1990s the RAA has been affected by modernization involving: (i) a change in the mode of irrigation, from gravity to sprinkler systems; (ii) the concentration of plots to enlarge the size of irrigated fields; and (iii) the introduction of more productive and highly water-consuming crops (corn, lucerne, vegetables). These changes coincided with enlargement of the irrigated area, increasing water demand at a time of increasing water scarcity because of restriction on the construction of new large reservoirs and declining water resources, because of climate and land use changes. Addressing this major problem has required new strategies, specifically the construction of small reservoirs and water ponds within the irrigated area. The ponds increase water reserves and facilitate sprinkling irrigation by adding pressure to the system. However, this has involved a huge rise in electricity consumption, which has increased the cost of production.
Idioma: Inglés
DOI: 10.18172/cig.2918
Año: 2016
Publicado en: Geographical Research Letters 42, 1 (2016), 233-259
ISSN: 0211-6820
Factor impacto SCIMAGO: 0.634 - Earth and Planetary Sciences (miscellaneous) (Q2) - Geography, Planning and Development (Q2) - Environmental Science (miscellaneous) (Q2)
Financiación: info:eu-repo/grantAgreement/EC/FP7/212250/EU/Assessment of Climatic change and impacts on the Quantity and quality of Water/ACQWA
Financiación: info:eu-repo/grantAgreement/ES/MINECO/CGL2011-27574-C02-01
Financiación: info:eu-repo/grantAgreement/ES/MINECO/CGL2011-27753-C02-01
Financiación: info:eu-repo/grantAgreement/ES/MINECO/CGL2011-27753-C02-02
Financiación: info:eu-repo/grantAgreement/ES/MINECO/CGL2014-52135-C3-3-R
Financiación: info:eu-repo/grantAgreement/ES/MINECO/CGL2015-65569-R
Tipo y forma: Article (Published version)
Área (Departamento): Área Geografía Física (Dpto. Geograf. Ordenac.Territ.)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes.
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Idioma: Inglés
DOI: 10.18172/cig.2918
Año: 2016
Publicado en: Geographical Research Letters 42, 1 (2016), 233-259
ISSN: 0211-6820
Factor impacto SCIMAGO: 0.634 - Earth and Planetary Sciences (miscellaneous) (Q2) - Geography, Planning and Development (Q2) - Environmental Science (miscellaneous) (Q2)
Financiación: info:eu-repo/grantAgreement/EC/FP7/212250/EU/Assessment of Climatic change and impacts on the Quantity and quality of Water/ACQWA
Financiación: info:eu-repo/grantAgreement/ES/MINECO/CGL2011-27574-C02-01
Financiación: info:eu-repo/grantAgreement/ES/MINECO/CGL2011-27753-C02-01
Financiación: info:eu-repo/grantAgreement/ES/MINECO/CGL2011-27753-C02-02
Financiación: info:eu-repo/grantAgreement/ES/MINECO/CGL2014-52135-C3-3-R
Financiación: info:eu-repo/grantAgreement/ES/MINECO/CGL2015-65569-R
Tipo y forma: Article (Published version)
Área (Departamento): Área Geografía Física (Dpto. Geograf. Ordenac.Territ.)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes. Exportado de SIDERAL (2020-02-21-13:26:56)
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Record created 2016-07-26, last modified 2020-02-21