Multi-objective synergy and competition relationship of water and sediment regulation of the Heishanxia reservoir in upstream of the Yellow River Basin

IF 4.7 2区地球科学 Q1 WATER RESOURCES

Journal of Hydrology-Regional Studies Pub Date : 2024-10-31 DOI:10.1016/j.ejrh.2024.102045

Jieyu Li , Hang Li , Yuanjian Wang , Gang Liu , Fei Yang , Qiang Wang , Donglin Li

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Abstract

Study region

Heishanxia Reservoir, upstream of the Yellow River Basin.

Study focus

The complicated management of the Yellow River Basin stems primarily from an uncoordinated relationship between water and sediment. The un-built Heishanxia Reservoir has been designated as one of seven pivotal projects, and its regulating effect remains to be thoroughly studied. First, nine typical inflow water and sediment scenarios were constructed based on probability inference. Then, a multi-objective water and sediment regulation model of Heishanxia Reservoir was established with the objectives of maximum erosion quantity (EQ) of the channel, maximum ecological satisfaction rate (ESR), and maximum power generation (PG). Finally, the multi-dimensional regulating effect was revealed, and the synergy-competition relationships among EQ, ESR and PG were analyzed.

New hydrological insights for the region

The operation of Heishanxia can increase the discharge during the flood season in the downstream Ning-Meng Channel, and the average annual EQ is 0.19×10⁸ t more than the current condition. Further, the ESR decreases slightly during the high-flow and normal-flow years and increases slightly during the low-flow years. The PG in the upper reaches of the Yellow River has increased by approximately 10 %. Among the three objectives, EQ and ESR, as well as EQ and PG, demonstrate a competitive relationship, whereas ESR and PG exhibit a synergistic relationship. Reservoir inflow plays a major role in the changes of synergy-competition relationship.

Abstract Image

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黄河流域上游黑山峡水库水沙调控的多目标协同与竞争关系

研究区域黄河流域上游的黑山峡水库。研究重点黄河流域的复杂管理主要源于水与泥沙之间不协调的关系。尚未建成的黑山峡水库被列为七大枢纽工程之一，其调节作用仍有待深入研究。首先，基于概率推理构建了九种典型的入库水沙情景。然后，以河道侵蚀量（EQ）最大、生态满足率（ESR）最大和发电量（PG）最大为目标，建立了黑山峡水库多目标水沙调节模型。黑山峡的运行可增加下游宁蒙河道汛期下泄流量，年平均侵蚀量比现状增加 0.19×108 t。此外，ESR 在丰水年和常丰水年略有减少，在枯水年略有增加。黄河上游的 PG 增加了约 10%。在这三个目标中，EQ 和 ESR 以及 EQ 和 PG 呈现竞争关系，而 ESR 和 PG 则呈现协同关系。在协同与竞争关系的变化中，水库流入量起着重要作用。

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来源期刊

Journal of Hydrology-Regional Studies Earth and Planetary Sciences-Earth and Planetary Sciences (miscellaneous)

CiteScore

6.70

自引率

8.50%

发文量

284

审稿时长

60 days

期刊介绍： Journal of Hydrology: Regional Studies publishes original research papers enhancing the science of hydrology and aiming at region-specific problems, past and future conditions, analysis, review and solutions. The journal particularly welcomes research papers that deliver new insights into region-specific hydrological processes and responses to changing conditions, as well as contributions that incorporate interdisciplinarity and translational science.