灌溉排水学报2026，Vol.45Issue(7)：134-143,10.DOI:10.13522/j.cnki.ggps.2025356
基于多目标优化的石羊河流域农业种植结构优化
Multi-objective optimization of agricultural planting structure based on water footprint in the Shiyang River Basin
摘要
Abstract
[Objective]The Shiyang River Basin is a typical arid basin in Northwestern China that faces severe water scarcity and an unbalanced cropping structure.In this paper,we propose a multi-objective optimization method to optimize the regional agricultural planting structure.[Method]This study was based on water footprint theory to analyze the spatiotemporal changes in blue and green water footprints of three major crops(wheat,maize and vegetables)cultivated across five counties and districts in the basin from 2000 to 2024,including Minqin County,Gulang County,Liangzhou District,Jinchuan District,and Jinchang County.On this basis,a multi-objective optimization model considering both economic and ecological benefits was established to determine the optimal planting structure for the region.[Result]①Maize dominated the water footprint in Liangzhou District,accounting for 46.61%of the total water footprint of the three crops;the blue water footprint of vegetables accounted for 39.67%of the total crop water footprint.Among all studied regions,Jinchuan District had the lowest total crop water footprint,with its green water footprint accounting for only 0.31%of the total water footprint.②The Pareto-optimal planting structure yielded a total blue water footprint of 2.489 billion m3,saving 356 million m3 of water compared with the baseline scenario,while delivering an economic benefit of 12.046 billion CNY.[Conclusion]The Pareto-optimized planting structure is specified as follows:increasing the maize planting area to 128 320 hm2,reducing the wheat cultivated area to 57 220 hm2,and adjusting the vegetable planting area to 52 000 hm2.These changes can effectively reduce the regional blue water footprint and improve economic returns,facilitating the sustainable utilization of water resources in the basin.关键词
作物水足迹/种植结构/多目标优化/石羊河流域Key words
crop water footprint/planting structure/multi-objective optimization/Shiyang River Basin分类
农业科技引用本文复制引用
李洁,李磊,周冬梅,麻小玄,陈玲玲,张军,Dong Qinghan..基于多目标优化的石羊河流域农业种植结构优化[J].灌溉排水学报,2026,45(7):134-143,10.基金项目
甘肃省科技重大专项(25ZYJA032) （25ZYJA032）
甘肃省自然科学基金项目(24JRRA774) （24JRRA774）
甘肃省高校教师创新项目(2025A-098,2025B-096,2025B-110) （2025A-098,2025B-096,2025B-110）
