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Optimizing the operation of the Qingshitan Reservoir in the Lijiang River for multiple human interests and quasi-natural flow maintenance

引用

Journal of Environmental Sciences 2012年第11期24卷 1923-1928页

作者： Qiuwen Chen Duan Chen Ruiguang Han Ruonan Li Jinfeng Ma Koen Blanckaert Research Center for Eco-Environmental Sciences Chinese Academy of SciencesBeijing 100085China Three Gorges University Yichang 443002China Changjiang River Scientific Research Institute Wuhan 430010China Laboratory of Hydraulic Constructions School of ArchitectureCivil and Environment EngineeringLausanneSwitzerland Haihe Water Conservancy Commission Tianjin 300170China

For reservoir operation, maintaining a quasi-natural flow regime can benefit river ecosystems, but may sacrifice human interests. This study took the Qingshitan Reservoir in the Lijiang River as a case, and developed an optimization model to explore a trade-off solution between social-economic interests and nature flow maintenance on a monthly base. The objective function considered irrigation, cruise navigation and water supply aspects. An index of flow alteration degree was proposed to measure the difference between the regulated discharge and the natural flow. The index was then used as an additional constraint in the model besides the conventional constraints on reservoir safety. During model solving, different criteria were applied to the index, representing various degrees of alteration of the natural flow regime in the river. Through the model, a relationship between social-economic interests and flow alteration degree was established. Finally, a trade-off solution of the reservoir operation was defined that led to a favorable social-economic benefit at an acceptable alteration of the natural flow.

关键词： reservoir operation optimization model flow alteration trade-off solution

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