汾河灌区水资源多目标优化配置模型研究  

Multi-Objective Optimal Allocation Model of Water Resources in Fenhe Irrigation District

作　　者：杨改强[1,2] 刘亚红 郭萍[2] 郭栋鹏[1] 霍丽娟[1] YANG Gai-qiang;LIU Ya-hong;GUO Ping;GUO Dong-peng;HUO Li-juan(School of Environmental Science and Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China;College of Water Resources Civil Engineering,China Agricultural University,Beijing 100083,China)

机构地区：[1]太原科技大学环境科学与工程学院,太原030024 [2]中国农业大学水利与土木工程学院,北京100083

出　　处：《节水灌溉》2022年第8期8-15,共8页Water Saving Irrigation

基　　金：国家自然科学基金项目(51709195,U21A20524,41807130);山西省基础研究计划(20210302123213);山西省社会经济统计科研项目(KY[2021]146)。

摘　　要：基于模型参数的不确定性建立了以灌区净收益最大和灌溉水损失量最小为目标的不确定性多目标农业水资源优化配置模型。优化模型中不仅考虑到地下水和地表水之间的转化,也引入了碳足迹约束条件。模型应用于山西省汾河灌区,实现对子灌区农作物各生育阶段灌溉水量的优化配置。结果表明:当降水条件由平水年状态向干旱转变时,经济目标呈明显下降趋势,其值下限由6.760亿元(P=50%)降至5.025亿元(P=75%);上限由7.791亿元(P=50%)降至6.550亿元(P=75%);农业水资源应优化分配给水分敏感指数大的生育阶段,如冬小麦的拔节-抽穗期和抽穗-灌浆期和玉米的拔节-抽穗期;两种作物平水年的碳吸收量达到[6.851,7.533]亿t,偏旱年达到[5.673,6.651]亿t。研究可为其他灌区的农业水资源的优化分配提供模型参考。Based on the uncertainty of model parameters,a multi-objective optimal allocation model of agricultural water resources was established to achieve the synergy of the net income maximization and irrigation water loss minimization.The carbon footprint and transfer of surface water and groundwater were introduced into the model as constraints.With the aim of optimizing the allocation of irrigation water in each growth stage of crops,the model was applied to Fenhe irrigation district in Shanxi Province.The results showed that the economic objective decreased significantly when the precipitation changed from normal to drought.The lower limit value of economic benefit objective decreased from 0.6760 billion yuan(P=50%)to 0.5025 billion yuan(P=75%),and the corresponding upper limit decreased from 0.7791 billionyuan(P=50%)to 0.6550 billion yuan(P=75%).Agricultural water resources should be allocated to the growth stages with high water sensitivity index,such as jointing–heading stage and heading-filling stage for wheat and jointing-heading stage for maize.The carbon sequestration capacity of the two crops reached[0.6851,0.7533]billiontons in normal year and[0.5673,0.6651]billiontons in partial drought year.This study can provide a model reference for the optimal allocation of agricultural water resources in other irrigated areas.

关 键 词：优化模型 农业水资源 多目标规划 碳足迹 汾河灌区 

分 类 号：S27[农业科学—农业水土工程] TV213.4[农业科学—农业工程]