Efficient and equitable irrigation management: A fuzzy multi-objective optimization model integrating water movement processes
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View abstract on PubMed
Summary
This summary is machine-generated.This study developed a multi-objective model for optimizing irrigation water allocation, balancing economic benefits, water equity, and efficiency under uncertainty. The model provides optimal solutions for sustainable irrigated agriculture.
Area Of Science
- Agricultural Water Management
- Optimization Modeling
- Environmental Science
Background
- Irrigation decisions face conflicts between economic benefits, water equity, and efficiency, especially under uncertainty.
- Managing water resources sustainably requires balancing competing objectives in irrigation.
- The Hetao Irrigation District exemplifies challenges in irrigation water supply and demand conflicts.
Purpose Of The Study
- To develop a robust multi-objective model for optimizing irrigation water allocation.
- To balance economic benefits, water equity, and irrigation efficiency under uncertainty.
- To address conflicts in irrigation water supply and demand.
Main Methods
- Utilized water balance simulation to model daily water movement (irrigation, soil, groundwater, drainage).
- Employed interval multi-objective programming and fuzzy-boundary interval programming to manage objective conflicts under uncertainty.
- Applied interactive algorithms to align constraint feasibility with objective satisfaction for optimal solutions.
Main Results
- Optimal water allocation solutions were derived for different feasibility levels (0.5-1.0) across subareas and crops.
- Decision satisfaction peaked at a feasibility level of 0.9, balancing feasibility and objective satisfaction.
- At 0.9 feasibility, economic benefits were [3.62, 13.60] × 10^9 Yuan, with a reduced Gini coefficient compared to 1.0 feasibility.
Conclusions
- The developed model facilitates decision-making for irrigation optimization under multiple conflicting objectives and uncertainties.
- Achieving optimal irrigation water allocation promotes sustainable irrigated agriculture across economic, social, and resource dimensions.
- Balancing feasibility and objective satisfaction is crucial for aligning model outcomes with decision-maker expectations.
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