Impacto de estratégias de gestão dos recursos hidricos sobre a disponibilidade da agua para usos multiplos numa bacia hidrografica semi-arida
In the semi-arid crystalline area of Ceará, the exploitation of alluvial aquifers for irrigation and domestic supply to rural communities over the last 10 years has upset the traditional mechanisms of water resources management. In the Forquilha watershed (Quixeramobim-CE), the main water resources are reservoirs (1 to 7 hm3), and an alluvial aquifer (2.3 hm3). From 1998 to 2006, pumping of alluvial groundwater for irrigation supply increased from ~0 to 0,7 hm³/year, and the fraction of population supplied through domestic water networks, using reservoirs and the aquifer, increased from 1% to 70%. Physical and socioeconomic issues were used 1) to characterize the system, 2) to build future scenarios of water resources exploitation, and 3) to build hydrological balance models in order to simulate the different impacts on water resource availability and salinity. Simulation results showed that, releases from the upstream main reservoir are necessary to keep reservoir salinity below 0.7 g/L and for guaranteeing domestic needs in the whole watershed. Moreover, the simulations showed that the area of irrigated fields cannot increase beyond the current extent (75 ha) without serious problems with water availability and salinity in the whole watershed. Otherwise, important socioeconomic problems are expected.
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dig-cirad-fr-5477792024-01-28T16:42:58Z http://agritrop.cirad.fr/547779/ http://agritrop.cirad.fr/547779/ Impacto de estratégias de gestão dos recursos hidricos sobre a disponibilidade da agua para usos multiplos numa bacia hidrografica semi-arida. Burte Julien, Jamin Jean-Yves, Coudrain Anne, Frischkorn Horst, Rodrigues Eduardo S.P.M.. 2008. In : IX Simposio Brasileiro de Recursos Hidricos, 25 a 28 de novembro de 2008, Salvador da Bahia, Brazil. s.l. : s.n., 21 p. Simposio Brasileiro de Recursos Hidricos. 9, Sao Paulo, Brésil, 10 Novembre 1991/14 Novembre 1991. Impacto de estratégias de gestão dos recursos hidricos sobre a disponibilidade da agua para usos multiplos numa bacia hidrografica semi-arida Burte, Julien Jamin, Jean-Yves Coudrain, Anne Frischkorn, Horst Rodrigues, Eduardo S.P.M. por 2008 s.n. IX Simposio Brasileiro de Recursos Hidricos, 25 a 28 de novembro de 2008, Salvador da Bahia, Brazil P10 - Ressources en eau et leur gestion gestion des eaux http://aims.fao.org/aos/agrovoc/c_8320 Ceara http://aims.fao.org/aos/agrovoc/c_1401 In the semi-arid crystalline area of Ceará, the exploitation of alluvial aquifers for irrigation and domestic supply to rural communities over the last 10 years has upset the traditional mechanisms of water resources management. In the Forquilha watershed (Quixeramobim-CE), the main water resources are reservoirs (1 to 7 hm3), and an alluvial aquifer (2.3 hm3). From 1998 to 2006, pumping of alluvial groundwater for irrigation supply increased from ~0 to 0,7 hm³/year, and the fraction of population supplied through domestic water networks, using reservoirs and the aquifer, increased from 1% to 70%. Physical and socioeconomic issues were used 1) to characterize the system, 2) to build future scenarios of water resources exploitation, and 3) to build hydrological balance models in order to simulate the different impacts on water resource availability and salinity. Simulation results showed that, releases from the upstream main reservoir are necessary to keep reservoir salinity below 0.7 g/L and for guaranteeing domestic needs in the whole watershed. Moreover, the simulations showed that the area of irrigated fields cannot increase beyond the current extent (75 ha) without serious problems with water availability and salinity in the whole watershed. Otherwise, important socioeconomic problems are expected. conference_item info:eu-repo/semantics/conferenceObject Conference info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/547779/1/document_547779.pdf application/pdf Cirad license info:eu-repo/semantics/openAccess https://agritrop.cirad.fr/mention_legale.html http://catalogue-bibliotheques.cirad.fr/cgi-bin/koha/opac-detail.pl?biblionumber=202934 |
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P10 - Ressources en eau et leur gestion gestion des eaux http://aims.fao.org/aos/agrovoc/c_8320 http://aims.fao.org/aos/agrovoc/c_1401 P10 - Ressources en eau et leur gestion gestion des eaux http://aims.fao.org/aos/agrovoc/c_8320 http://aims.fao.org/aos/agrovoc/c_1401 |
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P10 - Ressources en eau et leur gestion gestion des eaux http://aims.fao.org/aos/agrovoc/c_8320 http://aims.fao.org/aos/agrovoc/c_1401 P10 - Ressources en eau et leur gestion gestion des eaux http://aims.fao.org/aos/agrovoc/c_8320 http://aims.fao.org/aos/agrovoc/c_1401 Burte, Julien Jamin, Jean-Yves Coudrain, Anne Frischkorn, Horst Rodrigues, Eduardo S.P.M. Impacto de estratégias de gestão dos recursos hidricos sobre a disponibilidade da agua para usos multiplos numa bacia hidrografica semi-arida |
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In the semi-arid crystalline area of Ceará, the exploitation of alluvial aquifers for irrigation and domestic supply to rural communities over the last 10 years has upset the traditional mechanisms of water resources management. In the Forquilha watershed (Quixeramobim-CE), the main water resources are reservoirs (1 to 7 hm3), and an alluvial aquifer (2.3 hm3). From 1998 to 2006, pumping of alluvial groundwater for irrigation supply increased from ~0 to 0,7 hm³/year, and the fraction of population supplied through domestic water networks, using reservoirs and the aquifer, increased from 1% to 70%. Physical and socioeconomic issues were used 1) to characterize the system, 2) to build future scenarios of water resources exploitation, and 3) to build hydrological balance models in order to simulate the different impacts on water resource availability and salinity. Simulation results showed that, releases from the upstream main reservoir are necessary to keep reservoir salinity below 0.7 g/L and for guaranteeing domestic needs in the whole watershed. Moreover, the simulations showed that the area of irrigated fields cannot increase beyond the current extent (75 ha) without serious problems with water availability and salinity in the whole watershed. Otherwise, important socioeconomic problems are expected. |
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conference_item |
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P10 - Ressources en eau et leur gestion gestion des eaux http://aims.fao.org/aos/agrovoc/c_8320 http://aims.fao.org/aos/agrovoc/c_1401 |
author |
Burte, Julien Jamin, Jean-Yves Coudrain, Anne Frischkorn, Horst Rodrigues, Eduardo S.P.M. |
author_facet |
Burte, Julien Jamin, Jean-Yves Coudrain, Anne Frischkorn, Horst Rodrigues, Eduardo S.P.M. |
author_sort |
Burte, Julien |
title |
Impacto de estratégias de gestão dos recursos hidricos sobre a disponibilidade da agua para usos multiplos numa bacia hidrografica semi-arida |
title_short |
Impacto de estratégias de gestão dos recursos hidricos sobre a disponibilidade da agua para usos multiplos numa bacia hidrografica semi-arida |
title_full |
Impacto de estratégias de gestão dos recursos hidricos sobre a disponibilidade da agua para usos multiplos numa bacia hidrografica semi-arida |
title_fullStr |
Impacto de estratégias de gestão dos recursos hidricos sobre a disponibilidade da agua para usos multiplos numa bacia hidrografica semi-arida |
title_full_unstemmed |
Impacto de estratégias de gestão dos recursos hidricos sobre a disponibilidade da agua para usos multiplos numa bacia hidrografica semi-arida |
title_sort |
impacto de estratégias de gestão dos recursos hidricos sobre a disponibilidade da agua para usos multiplos numa bacia hidrografica semi-arida |
publisher |
s.n. |
url |
http://agritrop.cirad.fr/547779/ http://agritrop.cirad.fr/547779/1/document_547779.pdf |
work_keys_str_mv |
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