Climate change impacts on irrigated agriculture in the Guadiana riverbasin (Portugal)
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10174/14562 |
Resumo: | This study evaluates climate change potential impacts on irrigated agriculture in the Guadiana river basin, in the south of Portugal, by running long-term soil water balance simulations using the ISAREG model and taking into consideration the maximum potential yield. The ISAREG simulations were focused in as et of the most locally representative crops to assess the evolution of net and total water requirements, considering a monthly time step for two 30-year future periods, (2011–2040) and (2041–2070). Reference evapotranspiration was estimated using the temperature-based Hargreaves–Samani equation, and the simulations were performed using, as inputs, a combination of five climate change scenarios built using the Ensemble-Delta technique from CMIP3 climate projections datasets to set different alternative climate change bracketing conditions for rainfall and air temperature. Water balance outputs for different climate scenarios were combined with four agricultural scenarios allowing for the estimation of total irrigation requirements. A general increase in crop irrigation requirements was estimated, mainly for those crops as maize, pasture, and orchards that are already big irrigation water consumers. Crops as olive groves and vineyards, well adapted to the Mediterranean conditions, show less sensitivity to climate change. The combined results of crop irrigation requirements for climate change and agricultural scenarios allow for the expectation of sustainability for the agricultural scenarios A and C, essentially defined by the complete use of the irrigation network and systems currently being constructed with the Alqueva project, but not for the ambitious irrigation area expanding scenario B. |
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Climate change impacts on irrigated agriculture in the Guadiana riverbasin (Portugal)Climate changeIrrigated agricultureAgricultural scenariosCrop water requirementsGuadiana river basinThis study evaluates climate change potential impacts on irrigated agriculture in the Guadiana river basin, in the south of Portugal, by running long-term soil water balance simulations using the ISAREG model and taking into consideration the maximum potential yield. The ISAREG simulations were focused in as et of the most locally representative crops to assess the evolution of net and total water requirements, considering a monthly time step for two 30-year future periods, (2011–2040) and (2041–2070). Reference evapotranspiration was estimated using the temperature-based Hargreaves–Samani equation, and the simulations were performed using, as inputs, a combination of five climate change scenarios built using the Ensemble-Delta technique from CMIP3 climate projections datasets to set different alternative climate change bracketing conditions for rainfall and air temperature. Water balance outputs for different climate scenarios were combined with four agricultural scenarios allowing for the estimation of total irrigation requirements. A general increase in crop irrigation requirements was estimated, mainly for those crops as maize, pasture, and orchards that are already big irrigation water consumers. Crops as olive groves and vineyards, well adapted to the Mediterranean conditions, show less sensitivity to climate change. The combined results of crop irrigation requirements for climate change and agricultural scenarios allow for the expectation of sustainability for the agricultural scenarios A and C, essentially defined by the complete use of the irrigation network and systems currently being constructed with the Alqueva project, but not for the ambitious irrigation area expanding scenario B.Elsevier2015-05-29T10:47:55Z2015-05-292015-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/14562http://hdl.handle.net/10174/14562porValverde, P., Serralheiro R., Carvalho, M., Maia R., Oliveira, B., Ramos, V. (2015) Climate change impacts on irrigated agriculture in the Guadiana riverbasin (Portugal). Agricultural Water Management 152 (2015) 17–30.pedrovalv@gmail.comricardo@uevora.ptmjc@uevora.ptndndnd214Valverde, PedroSerralheiro, RicardoCarvalho, MárioMaia, RodrigoOliveira, BrunoRamos, Vanessainfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-03T19:00:41Zoai:dspace.uevora.pt:10174/14562Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:07:41.951952Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Climate change impacts on irrigated agriculture in the Guadiana riverbasin (Portugal) |
title |
Climate change impacts on irrigated agriculture in the Guadiana riverbasin (Portugal) |
spellingShingle |
Climate change impacts on irrigated agriculture in the Guadiana riverbasin (Portugal) Valverde, Pedro Climate change Irrigated agriculture Agricultural scenarios Crop water requirements Guadiana river basin |
title_short |
Climate change impacts on irrigated agriculture in the Guadiana riverbasin (Portugal) |
title_full |
Climate change impacts on irrigated agriculture in the Guadiana riverbasin (Portugal) |
title_fullStr |
Climate change impacts on irrigated agriculture in the Guadiana riverbasin (Portugal) |
title_full_unstemmed |
Climate change impacts on irrigated agriculture in the Guadiana riverbasin (Portugal) |
title_sort |
Climate change impacts on irrigated agriculture in the Guadiana riverbasin (Portugal) |
author |
Valverde, Pedro |
author_facet |
Valverde, Pedro Serralheiro, Ricardo Carvalho, Mário Maia, Rodrigo Oliveira, Bruno Ramos, Vanessa |
author_role |
author |
author2 |
Serralheiro, Ricardo Carvalho, Mário Maia, Rodrigo Oliveira, Bruno Ramos, Vanessa |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Valverde, Pedro Serralheiro, Ricardo Carvalho, Mário Maia, Rodrigo Oliveira, Bruno Ramos, Vanessa |
dc.subject.por.fl_str_mv |
Climate change Irrigated agriculture Agricultural scenarios Crop water requirements Guadiana river basin |
topic |
Climate change Irrigated agriculture Agricultural scenarios Crop water requirements Guadiana river basin |
description |
This study evaluates climate change potential impacts on irrigated agriculture in the Guadiana river basin, in the south of Portugal, by running long-term soil water balance simulations using the ISAREG model and taking into consideration the maximum potential yield. The ISAREG simulations were focused in as et of the most locally representative crops to assess the evolution of net and total water requirements, considering a monthly time step for two 30-year future periods, (2011–2040) and (2041–2070). Reference evapotranspiration was estimated using the temperature-based Hargreaves–Samani equation, and the simulations were performed using, as inputs, a combination of five climate change scenarios built using the Ensemble-Delta technique from CMIP3 climate projections datasets to set different alternative climate change bracketing conditions for rainfall and air temperature. Water balance outputs for different climate scenarios were combined with four agricultural scenarios allowing for the estimation of total irrigation requirements. A general increase in crop irrigation requirements was estimated, mainly for those crops as maize, pasture, and orchards that are already big irrigation water consumers. Crops as olive groves and vineyards, well adapted to the Mediterranean conditions, show less sensitivity to climate change. The combined results of crop irrigation requirements for climate change and agricultural scenarios allow for the expectation of sustainability for the agricultural scenarios A and C, essentially defined by the complete use of the irrigation network and systems currently being constructed with the Alqueva project, but not for the ambitious irrigation area expanding scenario B. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-05-29T10:47:55Z 2015-05-29 2015-01-01T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10174/14562 http://hdl.handle.net/10174/14562 |
url |
http://hdl.handle.net/10174/14562 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Valverde, P., Serralheiro R., Carvalho, M., Maia R., Oliveira, B., Ramos, V. (2015) Climate change impacts on irrigated agriculture in the Guadiana riverbasin (Portugal). Agricultural Water Management 152 (2015) 17–30. pedrovalv@gmail.com ricardo@uevora.pt mjc@uevora.pt nd nd nd 214 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799136561000873984 |