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Water Resources Management

Erschienen in:

29.09.2020

Study on Multi-Objective Operation Strategy for Multi-Reservoirs in Small-Scale Watershed Considering Ecological Flows

verfasst von: Wei Xu

Erschienen in: Water Resources Management | Ausgabe 15/2020

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Abstract

The operation of multi-reservoir system has significantly influence on ecological system in riverine by altering natural streamflow. To alleviate the negative impacts on the ecosystem in a small-scale watershed, ecological flow requirements (EFRs) are incorporated in the operating strategies to tradeoff between the existing human needs and EFRs. In this study, three scenarios of EFRs are firstly generated to study the impacts on the operation efficiency of the existing objectives. Then, the reservoirs are classified into three categories, and the operation strategies are defined, respectively. Finally, the operation strategies are optimized using NSGA-II algorithm and used to simulate the operation processes. The simulation results indicate that the operation objectives between the EFRs and agricultural irrigation have a significant competitive relationship, and the guarantee rate for agricultural irrigation decreases with the EFRs increasing. The reservoirs in the third category with large storage capacity have strong regulation ability for the EFRs, however the reservoir operations in other categories are more vulnerable in term of guarantee rate for irrigation.

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Titel: Study on Multi-Objective Operation Strategy for Multi-Reservoirs in Small-Scale Watershed Considering Ecological Flows
verfasst von: Wei Xu
Publikationsdatum: 29.09.2020
Verlag: Springer Netherlands
Erschienen in: Water Resources Management / Ausgabe 15/2020
Print ISSN: 0920-4741
Elektronische ISSN: 1573-1650
DOI: https://doi.org/10.1007/s11269-020-02685-3

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