Environmental flow assessment in the Lower Yellow River using habitat simulation and hydrological reference system
| Autor: | Dengming Yan, Shaoming Peng, Wenxiu Shang |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Hydrology
Baseflow 010504 meteorology & atmospheric sciences Flow (psychology) 0207 environmental engineering Fish habitat 02 engineering and technology 01 natural sciences Environmental sciences Environmental flow Habitat Indicator species Assessment methods Environmental science GE1-350 020701 environmental engineering Sediment transport 0105 earth and related environmental sciences |
| Zdroj: | E3S Web of Conferences, Vol 267, p 01022 (2021) |
| ISSN: | 2267-1242 |
| DOI: | 10.1051/e3sconf/202126701022 |
| Popis: | The accuracy of the habitat simulation method is often questioned due to limited simulated elements and indicator species. This study established an environmental flow assessment method by coupling fish habitat simulation with hydrological reference system. The environmental flow obtained through the habitat simulation method was corrected by the statistical characteristics of natural flow regime. The environmental flow of the Huayuankou section in the Lower Yellow River was assessed. The results show that the environmental flow demand of the Huayuankou section is 7.9 - 15.4 billion m3/y without consideration of sediment transport. An environmental baseflow of 220 - 400 m3/s is required throughout the year. One to two high flow pulses are needed in the rising-water season to trigger spawning, followed by flow events of 350 - 500 m3/s with more than 1 week duration to create the spawning grounds. |
| Databáze: | OpenAIRE |
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