| Cite this article: | 王慧,高泽海.基于NSGA-Ⅱ的灌区水资源优化配置模型及应用[J].灌溉排水学报,0,():-. |
| Wang Hui,Gao Zehai.基于NSGA-Ⅱ的灌区水资源优化配置模型及应用[J].灌溉排水学报,0,():-. |
|
| |
|
|
| This article has been：Browse 2264Times Download 0Times |
|
|
|
| DOI： |
|
| Model and application of optimal allocation for water resources in irrigated areas based on NSGA-Ⅱ method |
|
Wang Hui, Gao Zehai
|
|
Xi，an University of Technologe
|
| Abstract: |
| Aiming at the shortage of water resource and low efficiency of agricultural water utilization in irrigated areas, a two-stage optimization model including planting structure and irrigation system is constructed in this paper. The principle of system decomposition and coordination is adopted to allocate the water resources in irrigation area. In the first layer of the optimization model, the effect of irrigation time on irrigation schedule is analyzed. Meanwhile, the effect of ecological benefits on planting structure is revealed in the second layer of the optimization model. This paper focuses on Baojixia Wuquan irrigation area and designs a two-level optimization model to figure out the optimal allocation of water resource by using the non-dominant genetic algorithm. The optimization result confirms that (1) the optimization scheme which consists of irrigation amount and the irrigation time can promote the economic benefits of the irrigation area; (2) in the layer of planting structure, adding ecological benefits into the optimization goal will reduce the economic benefits, but the optimized benefits are still significantly higher than the economic benefits under the current planting structure. (3) By comparison, to realize the water resource optimal allocation, the best scheme should define economic and ecological benefits as the optimization goal in the second layer of the model and optimize the irrigation water and irrigation time in the first layer. The proposed optimization model can provide theoretical basis and decision support for the optimization of irrigation system and planting structure in similar areas. |
| Key words: water resources; planting structure; irrigation system; non-dominant genetic algorithm; |
|
|
|
|
|
|
