| 崔思梦,吴梦洋,王小军,操信春.基于水足迹与水-能源-粮食关联关系的提水灌溉系统种植结构优化[J].水利学报,2023,54(8):967-977 |
| 基于水足迹与水-能源-粮食关联关系的提水灌溉系统种植结构优化 |
| Optimization of planting structure in pumping irrigation system based on water footprint and water-energy-grain nexus |
| 投稿时间：2023-01-11 |
| DOI：10.13243/j.cnki.slxb.20230022 |
| 中文关键词: 水-能源-粮食 作物水足迹 多目标优化 提水灌溉系统 Topsis评价法 |
| 英文关键词: water-energy-grain nexus crop water footprint multi-objective optimization pumping irrigation system Topsis evaluation method |
| 基金项目:国家自然科学基金项目(51979074，41961124006);江苏省自然科学基金项目(BK20221504);中央高校基本科研业务费项目(B230201009) |
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| 中文摘要: |
| 灌溉系统是农业生产与用水的关键载体，其水-能源-粮食关联关系的协调性对区域可持续发展有重要影响。相较于传统的灌溉水高效分配研究，水足迹理论明晰了农业生产水资源消耗总量及其利用类型。针对提水灌溉系统水资源、能源供需配置不紧密及其生态影响考虑不全面的问题，联合水足迹理论与水-能源-粮食关联关系，统筹社会、资源、生态和经济多维系统，构建了考虑水资源调配、农业生产用水及粮食生产转移全过程的提水灌溉区种植结构多目标优化评价模型。将该模型应用于涟水灌溉区，通过调整粮食作物(水稻、小麦、玉米和大豆)的种植结构，运用Topsis方法对比评价了现状和优化配置情况的相对贴近度。优化结果表明：在保障粮食安全的基本前提下，应增大玉米的播种面积，减少大豆的播种面积;相较于现状，优化后的年均粮食单方水经济净效益提升4.0%，作物碳足迹在农作物种植基线改变时呈现下降态势，且2018年优化后的碳足迹降低79.5 kg。优化方案的相对贴近度均大于现状，对促进提水灌溉系统资源高效利用和农业可持续性具有可靠的支撑作用。 |
| 英文摘要: |
| Irrigation system is the key carrier of agricultural production and water use，and the coordination of water-energy-grain nexus has an important impact on regional sustainable development.Compared with traditional studies on efficient allocation of irrigation water，water footprint theory clarifies the total water consumption and utilization types of agricultural production water resources.In response to the problem of water-energy resources supply and demand incompatible allocation and the ecological impact incomprehensive consideration in pumping irrigation system，a multi-objective optimization evaluation model of planting structure in pumping irrigation district was constructed by combining the water footprint theory and water-energy-grain nexus with integrating the multi-dimensional systems of social，resources，ecology，and economy，taking into account the full phases of water resource allocation，agricultural production water and grain production transfer.The model was applied to Lianshui Irrigation District to adjust the planting structure of grain crops (rice，wheat，maize，and soybeans)，and then the Topsis method was adopted to compare and evaluate the relative closeness between the status quo and optimal configurations.The optimization results show that under the basic premise of ensuring food security，the sowing area of maize should be increased，and that of soybeans should be reduced.Compared with the status quo，the annual unilateral water economic net benefit of grain increased by 4.0% after the optimization，and crop carbon footprint showed a downward trend when crop planting baseline was changed with decreasing by 79.5 kg in 2018 after the optimization.The relative closeness of the optimization scheme was greater than the status quo，which plays a reliable supporting role in promoting efficient resources utilization and agricultural sustainability in pumping irrigation system. |
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