考虑回归水重复利用的灌区用水评价指标  

Water use assessment indices under the influence of return flows in irrigation districts

作　　者：刘路广[1,2] 崔远来[1] 吴瑕 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072 [2]湖北省水利水电科学研究院,湖北武汉430070

出　　处：《水科学进展》2013年第4期522-528,共7页Advances in Water Science

基　　金："十二五"国家科技支撑计划资助项目(2011BAD25B05;2012BAD08B05)~~

摘　　要：为了正确评价灌区用水效率及用水效益,构建了考虑回归水重复利用的灌区用水效率及效益指标。利用地表水-地下水耦合模型、SWAP模型和线性模型对柳园口灌区的水量和作物产量进行了分布式模拟,在此基础上,对柳园口灌区不同用水模式以及田间不同节水灌溉模式下的灌区用水效率及效益指标进行了计算,分析不同节水措施对灌区用水效率及效益指标的影响规律。结果表明,井渠结合调控模式和田间节水灌溉模式对柳园口灌区不同区域用水效率及效益的影响效果不同,但均能提高灌区总体的用水效率及效益。In order to accurately evaluate the water use efficiency in irrigation districts, several new indices were pro- posed to measure the efficiency and benefit of water use in this study. The water balance components are simulated u- sing integrated surface and groundwater models in the Liuyuankou Irrigation District （LID）. Thus, the new indices take into account the influence of return flows. The Statewide Agricultural Production （SWAP） model and a liner mod- el are used to simulate the crop yields in the LID. On this basis, the indices measuring water use efficiency and benefit can be calculated and analyzed for different patterns of water-use. The influence of various water saving measures on the efficiency and benefit of water use is discussed. Results show that although, over different regions of LID, the re- sults of well-canal combined irrigation mode and water-saving irrigation mode can be different in terms of water use ef- ficiency. The use of both modes can improve the overall efficiency and benefit of water use in the LID. The study pro- vides a theoretical method and theoretical basis for the water use assessment in irrigation districts.

关 键 词：回归水 灌区用水效率 效益指标 柳园口灌区 井渠结合调控模式 

分 类 号：TV11[水利工程—水文学及水资源]