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Water 2018, 10(2), 209; https://doi.org/10.3390/w10020209

Assessment of Irrigated Agriculture Vulnerability under Climate Change in Southern Italy

1
Department of Agriculture, University of Sassari, 07100 Sassari, Italy
2
Integrated Water Systems and Governance Department, IHE Delft Institute for Water Education, PO Box 3015, 2601 DA Delft, The Netherlands
3
Euro-Mediterranean Center on Climate Changes, IAFES Division, 07100 Sassari, Italy
*
Author to whom correspondence should be addressed.
Received: 18 December 2017 / Revised: 2 February 2018 / Accepted: 11 February 2018 / Published: 15 February 2018
(This article belongs to the Special Issue Sustainable Water Management in Agriculture under Global Change)
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Abstract

Climate change in Mediterranean countries is anticipated to have a strong impact on water availability by exacerbating drought conditions and water scarcity. In this context, efficient irrigation practices are becoming essential for sustaining crop production. This work assesses vulnerability of irrigated agriculture for six irrigation districts and their associated reservoirs in Mediterranean areas across Italy under climate change (1976–2005 versus 2036–2065; RCP 4.5 and 8.5), evaluating changes in irrigation requirements, evaporation from reservoirs, and the availability of freshwater supplies. Irrigation requirements are estimated through a crop water model (SIMETAW_R) integrated into a GIS platform, while inflows to reservoirs are hydrologically modelled as partitioning of precipitation contributing to runoff. Results are aggregated into indicators that show the general decreasing resilience and increasing vulnerability of irrigated agriculture under climate change conditions in each case study. The highest percentage of allowable water losses for irrigation is estimated in the Cuga-Alto Temo system, during the prolonged drought period, to be able to satisfy irrigation demand for less than a year. Climate change may only partially affect irrigation in resilient systems, in which storage capacity and the water level entering into the reservoir are considerably higher than the water distribution volumes. View Full-Text
Keywords: Mediterranean; reservoirs; water scarcity; irrigation requirement; evaporation; resilience Mediterranean; reservoirs; water scarcity; irrigation requirement; evaporation; resilience
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Masia, S.; Sušnik, J.; Marras, S.; Mereu, S.; Spano, D.; Trabucco, A. Assessment of Irrigated Agriculture Vulnerability under Climate Change in Southern Italy. Water 2018, 10, 209.

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