Research on the Ecological Flow and Water Replenishment Thresholds for Diversion Rivers Based on the MC-LOR Algorithm

Hu, Wentong; Gu, W; Miao, Donghao; Shao, Dongguo

doi:10.1007/s11269-022-03279-x

Cited by 6 publications

(3 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The methods for calculating ecological flow can be categorized into four classes: hydrological, hydraulic, habitat, and holistic methods [26]. The hydrological method is the most extensively employed due to its simplicity and broad applicability; however, it lacks explicit ecological significance [27]. The hydraulic method builds upon the hydrological method by incorporating river and biological information, though it falls short in considering the holistic aspects of ecosystems [28,29].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Fish Habitats and Suitable Ecological Flow under Hydropower Operation

Yan,

Qin,

Zhang

et al. 2024

Water

View full text Add to dashboard Cite

Hydropower operations significantly alter the natural hydrological conditions of rivers, exerting adverse effects on riverine ecosystems. Accurate identification of fish habitats under hydropower operation and maintaining suitable ecological flow are crucial for riverine ecological conservation and water resource management. Coreius guichenoti was selected as the target species and the Yibin reach of the downstream Jinsha River was selected as the studied river reach. Subsequently, Weighted Usable Area (WUA) and Habitat Connectivity Index (HCI) were employed to comparatively analyze the habitat quantity and quality before and after the construction and operation of the Xiangjiaba hydropower station, namely the natural period (1991–2005), construction period (2006–2014), and operation period (2015–2020). Finally, correlations between WUA, HCI, and flow were established to determine the optimal ecological flow corresponding to optimal fish habitats. The results indicate that the average WUA and HCI during the construction period are similar to the natural period. In comparison to the natural period, the average WUA decreases by 9.2%, and the average HCI decreases by 0.05 during the operation period. It is determined that the habitat conditions are optimal when the flow is between 3000 and 5000 m3/s. After further refining the flow scenarios, the suitable ecological flow is determined to be 3500 m3/s. This study can provide a scientific basis for the water resources management in the Jinsha River and contribute to the field of riverine ecological conservation and restoration.

show abstract

Section: Introductionmentioning

confidence: 99%

Assessment of Fish Habitats and Suitable Ecological Flow under Hydropower Operation

Yan,

Qin,

Zhang

et al. 2024

Water

View full text Add to dashboard Cite

show abstract

“…These negative impacts of human social development on the ecological health of rivers are long-term and potential. River ecological flow safety is the core and foundation of maintaining river health, so river ecological flow research is of great significance (Hu et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

“…The concept of river ecological flow is based on the definition of a healthy river ecosystem, and the most widely accepted international explanation of ecological flow is that portrayed in the Brisbane Declaration (Hu et al, 2022). The study of ecological flows in rivers has gradually developed as the negative impacts caused by human activities on river ecosystems have been increasing.…”

Section: Introductionmentioning

confidence: 99%

Calculation of River Ecological Flow Based on Multiple Hydrological Methods

Wei,

Li,

Liu

et al. 2023

Preprint

View full text Add to dashboard Cite

Under the backdrop of increasing water utilization, river ecosystem problems continue to emerge. Determining the ecological flow of rivers is one of the keys to the comprehensive restoration of river ecosystems. This paper determines the operability of runoff sequences by means of the Mann-Kendal test, quantifies the minimum ecological flow through five representative hydrological methods, including Intra-year distribution (IYD), Flow during curve (FDC), Q90, Monthly minimum average flow (MMAF) and Average flow in the driest month (AFDM), and calculates the suitable ecological flow by the monthly frequency (M-F) method in three different scenarios. In addition, a comprehensive comparison of the methods is made from various aspects to give the recommended methods. Taking the Shaying River basin as the research objects, the AFDM method achieves the best satisfaction in terms of water demand, the Q90 method and the FDC method have the highest satisfaction level, and IYD method best meet the requirements of hydrological rhythms. The suitable ecological flow derived from the M-F method under Scenario a is optimally satisfactory in all respects. It is recommended to determine the minimum and suitable ecological flow processes by IYD method and the result under scenario b, respectively. This study can be used to provide a scientific and effective reference basis for integrated river management.

show abstract

White Elephant or Golden Goose? An Assessment of Middle Route of the South-to-North Water Diversion Project from the Perspective of Regional Water Use Efficiency

Cheng

Zhao

Song

et al. 2023

Water Resour Manage

View full text Add to dashboard Cite

Research on the Ecological Flow and Water Replenishment Thresholds for Diversion Rivers Based on the MC-LOR Algorithm

Cited by 6 publications

References 36 publications

Assessment of Fish Habitats and Suitable Ecological Flow under Hydropower Operation

Assessment of Fish Habitats and Suitable Ecological Flow under Hydropower Operation

Calculation of River Ecological Flow Based on Multiple Hydrological Methods

White Elephant or Golden Goose? An Assessment of Middle Route of the South-to-North Water Diversion Project from the Perspective of Regional Water Use Efficiency

Contact Info

Product

Resources

About