Please use this identifier to cite or link to this item:

Title: Climate change impacts on irrigated agriculture in the Guadiana riverbasin (Portugal)
Authors: Valverde, Pedro
Serralheiro, Ricardo
Carvalho, Mário
Maia, Rodrigo
Oliveira, Bruno
Ramos, Vanessa
Keywords: Climate change
Irrigated agriculture
Agricultural scenarios
Crop water requirements
Guadiana river basin
Issue Date: 2015
Publisher: Elsevier
Citation: 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.
Abstract: 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.
Type: article
Appears in Collections:FIT - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica

Files in This Item:

File Description SizeFormat
Climate change impacts on irrigated agriculture in the Guadiana riverbasin (Portugal).pdf1.53 MBAdobe PDFView/Open
FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpaceOrkut
Formato BibTex mendeley Endnote Logotipo do DeGóis 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.


Dspace Dspace
DSpace Software, version 1.6.2 Copyright © 2002-2008 MIT and Hewlett-Packard - Feedback
UEvora B-On Curriculum DeGois