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  • Optimal operation of a multi-reservoir system for environmental water demand of a river-connected lake.

    Author(s) : Mao JingQiaoZhang PeiPeiDai LingQuanDai HuiChaoHu TengFei

    Author Affiliation : College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing, China.

    Author Email : maojq@hhu.edu.cn

    Journal article : Hydrology Research 2016 Vol.47 No.S1 pp.206-224 ref.30

    Abstract : Dongting Lake, a large river-connected lake in the Yangtze Riveryangtze riverSubject Category: Topographic Features
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    watershed, plays important roles in flood controlflood controlSubject Category: Miscellaneous
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    , droughtdroughtSubject Category: Climate Related
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    mitigation, and biodiversitybiodiversitySubject Category: Properties
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    conservation. Its ecosystem has recently been severely affected by upstream water resource development such as reservoir operations. In this study, an optimizationoptimizationSubject Category: Techniques, Methodologies and Equipment
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    model is developed for the operation of a multi-reservoir system, including the Three Gorges Reservoir (TGR) on the upper Yangtze River and 8 major reservoirsreservoirsSubject Category: Infrastructure
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    on the tributaries to Dongting Lake. The optimal target in pursuit of the ecological objective is to maximize the environmental water demand (EWD) satisfaction of the lake. A support vector regression-based model is used to predict the response of the lake level to reservoir operations. The optimization is carried out under different scenarios for both normal and dry conditions, and the results show that: (i) the existing operation policy could result in significant hydrologic alteration; (ii) in the normal condition, the proposed optimal joint operation policy could increase the general EWD satisfaction rate of Dongting Lake from 85.4% to 95.7%; and (iii) the improvementimprovementSubject Category: Miscellaneous
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    of EWD satisfaction in the normal condition is mainly affected by the TGR, while in the dry condition, the southern and western lake regions are more sensitive to the tributaries' reservoirs.

    ISSN : 0029-1277

    URL : http://hr.iwaponline.com/.../206

    Record Number : 20173044357

    Publisher : IWA Publishing

    Location of publication : Colchester

    Country of publication : UK

    Language of text : English

    Indexing terms for this abstract:

    Descriptor(s) : biodiversitybiodiversitySubject Category: Properties
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    , conservationconservationSubject Category: Miscellaneous
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    , droughtdroughtSubject Category: Climate Related
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    , ecosystemsecosystemsSubject Category: Habitats
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    , flood controlflood controlSubject Category: Miscellaneous
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    , floodingfloodingSubject Category: Miscellaneous
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    , floodsfloodsSubject Category: Miscellaneous
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    , hydrologyhydrologySubject Category: Miscellaneous
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    , improvementimprovementSubject Category: Miscellaneous
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    , lakeslakesSubject Category: Habitats
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    , nature conservationnature conservationSubject Category: Disciplines, Occupations and Industries
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    , optimizationoptimizationSubject Category: Techniques, Methodologies and Equipment
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    , reservoirsreservoirsSubject Category: Infrastructure
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    , riversriversSubject Category: Habitats
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    , water resourceswater resourcesSubject Category: Miscellaneous
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    , watershedswatershedsSubject Category: Topographic Features
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    , Yangtze Riveryangtze riverSubject Category: Topographic Features
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    Identifier(s) : catchment areas, Chongqing Shi, flooded conditions, Lake Dongting, People's Republic of China, water reservoirs

    Geographical Location(s) : ChinachinaSubject Category: Geographic Entities
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    , ChongqingchongqingSubject Category: Geographic Entities
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    , HunanhunanSubject Category: Geographic Entities
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    Broader term(s) : APEC countriesapec countriesSubject Category: Institutions and Organisations
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    , Developing Countriesdeveloping countriesSubject Category: Miscellaneous
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    , East Asiaeast asiaSubject Category: Geographic Entities
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    , AsiaasiaSubject Category: Geographic Entities
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    , Central Southern Chinacentral southern chinaSubject Category: Geographic Entities
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    , ChinachinaSubject Category: Geographic Entities
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    , South Western Chinasouth western chinaSubject Category: Geographic Entities
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