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引用本文:潘泓哲,李一平,唐春燕,Kumud Acharya,姚向阳,张剑,朱雅,程一鑫,程月,于珊,岳桢铻.多目标优化下平原河网引调水改善水环境效果评估.湖泊科学,2021,33(4):1138-1152. DOI:10.18307/2021.0415
Pan Hongzhe,Li Yiping,Tang Chunyan,Kumud Acharya,Yao Xiangyang,Zhang Jian,Zhu Ya,Cheng Yixin,Cheng Yue,Yu Shan,Yue Zhenwu.Evaluation of the effect of water diversion on improving water environment in plain river network under the multi-objective optimization. J. Lake Sci.2021,33(4):1138-1152. DOI:10.18307/2021.0415
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多目标优化下平原河网引调水改善水环境效果评估
潘泓哲1,2, 李一平1,2, 唐春燕1,2, Kumud Acharya3, 姚向阳4, 张剑4, 朱雅1,2, 程一鑫1,2, 程月1,2, 于珊1,2, 岳桢铻1,2
1.河海大学环境学院, 南京 210098;2.河海大学浅水湖泊综合治理与资源开发教育部重点实验室, 南京 210098;3.Department of Division of Hydrologic Sciences, Desert Research Institute, Las Vegas NV 89119;4.张家港市水资源管理处, 张家港 215617
摘要:
引调水是改善平原河网地区水环境的重要方法之一,通过构建太湖流域走马塘东南片平原河网区一维水动力水质数学模型,研究不同引调水方案对区域水环境改善效果,确定引调水过程中的异质性因子.从决策目标、水质指标、空间指标3个层面综合考虑,构建环境效益与经济效益结合的多目标函数及评价体系,对引调水方案进行评估优选.结果表明:引调水流量较大时,能够在一定程度上改善区域水环境状况,规划方案下引调水5 d后,高锰酸盐指数、氨氮、总磷的平均改善率分别为30.7%、22.2%、26.4%;引调水时,区域河网中不同空间点位、不同水质指标之间的水质改善过程与效果都存在一定异质性;引调水水量、调度模式及污染源分布都会对调水后的河网区水质产生差异性影响;本研究建立的多目标评价体系较现有方法能够有效涵盖引调水中存在的异质性因子,从多个目标层面优选引调水方案,实现水量水质综合优化调控,为平原河网地区水环境长效管理与科学决策提供理论参考.
关键词:  平原河网  一维河网模型  水环境改善  多目标优化  太湖流域
DOI:10.18307/2021.0415
分类号:
基金项目:国家水体污染控制与治理科技重大专项(2017ZX07204003)、中央高校建设世界一流大学(学科)和特色发展引导专项和国家自然科学基金项目(52039003,51779072,51809102)联合资助.
Evaluation of the effect of water diversion on improving water environment in plain river network under the multi-objective optimization
Pan Hongzhe1,2, Li Yiping1,2, Tang Chunyan1,2, Kumud Acharya3, Yao Xiangyang4, Zhang Jian4, Zhu Ya1,2, Cheng Yixin1,2, Cheng Yue1,2, Yu Shan1,2, Yue Zhenwu1,2
1.College of Environment, Hohai University, Nanjing 210098, P. R. China;2.Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing 210098, P. R. China;3.Department of Division of Hydrologic Sciences, Desert Research Institute, Las Vegas NV 89119;4.Zhangjiagang City Water Resources Management, Zhangjiagang 215617, P. R. China
Abstract:
Water diversion is a significant method to improve the water environment in the plain river network area. Through building up the one-dimensional hydrodynamic and water quality model of the plain river network area of southeast Zoumatang of Taihu Basin, the effect on water environment of different water diversion schemes was simulated, and the heterogeneous factors in the process were determined. A multi-objective function and evaluation system combining environmental benefits and economic benefits were constructed from three aspects, including decision-making, water quality indexes and spatial indexes, and the water diversion schemes were evaluated and optimized. The results show that: (1) With a larger flow, water diversion can improve the regional water environment to some extent. After 5 days of water diversion under the planning schemes, the average improvement rates of CODMn, ammonia nitrogen and total phosphorus were 30.7%, 22.2% and 26.4%, respectively. (2) Heterogeneity existed in the process and effect of water quality improvement in different spatial points and water quality indexes in the river network during water diversion. (3) The water quantity and dispatching mode of water diversion as well as distribution of pollutants all have different effects on the water quality in the river network. (4) Compared with the existing method, the multi-objective evaluation system of water diversion established in this research can effectively cover the heterogenous factors and evaluate and optimize different water diversion schemes from multiple objectives, therefore can achieve comprehensive optimization and control of water quantity and quality, and provide theoretical reference for long-term management and scientific decision-making of water environment in the plain river network area.
Key words:  Plain river network  one dimensional river network model  improvement of water environment  multi-objective optimization  Taihu Basin
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