Decision Support Systems for Improving Irrigation Scheme Management in Arid Area

Soil salinization is mainly an arid-zone problem leading to land desertification. It reduces soil quality and limits the growing of crops. The paper mainly aims at the actuality that soil salinization deteriorates in oasis and irrigation scheme management is unreasonable from the point of view that develop irrigation decision support system(DSS) about irrigation area management, and studies the optimal distributing of irrigation water in the irrigation area which take the Yutian oasis demonstration area as an example. The irrigation DSS is developed based on irrigation scheme management scenario which solves the muti-object models and geographic information system (GIS) which support spatial management. The irrigation DSS includes information systems that perform data acquisition, management and visualization, and models that performs simulation and optimization of the irrigation scheme. Multiple, competitive targets and constraints with different priorities can be set. The studying of irrigation DSS in irrigation area will provide scientific decision basis and design scheme for reasonably ascertaining the type of irrigation area and scientific management and optimal allotting of agriculture water resources in the arid area.