Regional application of one-dimensional water flow models for irrigation management

Numerical models for the simulation of soil water processes can be used to evaluate the spatial and temporal variations of crop water requirements; th is information can support the irrigation management in a rationale usage o f water resources. This latter objective requires the knowledge of spatiall y distributed input parameters concerning vegetation status, soil hydraulic behaviour and groundwater interaction. This task can be achieved by a conj unctive use of remote sensing techniques, geographical information systems and hydrological simulation models. The present work focuses on the criteri a applied for the implementation of a one-dimensional model for water flow in each parcel of an irrigation district in southern Italy having extension of 3000 ha. (C) 1999 Elsevier Science B.V. All rights reserved.