|Author:||Facchi, A. ; Gandolfi, C. ; Ortuani, B. ; Maggi, D.|
|Book Group Author:||NA|
The work presents the results of a comprehensive modelling study of surface and groundwater resources in the Muzza-Bassa Lodigiana irrigation district, in Northern Italy. It assesses the impact of changes in land use and irrigation water availability on the distribution of crop water consumption in space and time, as well as on the groundwater resources. A distributed, integrated surface water-groundwater simulation system was implemented and applied to the study area. The system is based on the coupling of a conceptual vadose zone model with the groundwater model MODFLOW. To assess the impact of land use and irrigation water availability on water deficit for crops as well as on groundwater system in the area, a number of management scenarios were identified and compared with a base scenario, reflecting the present conditions. Changes in land use may alter significantly both total crop water requirement and aquifer recharge. Water supply is sufficient to meet demand under present conditions and, from the crop water use viewpoint, a reduction of water availability has a positive effect on the overall irrigation system efficiency; however, evapotranspiration deficit increases, concentrated in July and August, when it may be critical for maize crops.
|Pages:||11 - 18|
|Journal:||Water Science and Technology|
aquifers, case studies, demand, environmental assessment,environmental impact, evapotranspiration, groundwater, groundwaterrecharge, irrigation, irrigation systems, irrigation water, land use,maize, planning, plant water relations, simulation, simulation models,spatial variation, surface water, temporal variation, water allocation,water availability, water deficit, water distribution, water management,water requirements, water resources, water supply, water use, water useefficiency, Italy, Zea mays, Zea, Poaceae, Cyperales, monocotyledons,angiosperms, Spermatophyta, plants, eukaryotes, Southern Europe, Europe,Mediterranean Region, Developed Countries, European Union Countries,OECD Countries, corn, environmental effects, vadose zone, water resourcemanagement, water supplies, watering, Policy and Planning (EE120), FieldCrops (FF005) (New March 2000), Plant Water Relations (FF062), PlantProduction (FF100), Soil Water Management (Irrigation and Drainage)(JJ800) (Revised June