大坝引起的三峡大坝波动回水区鱼类生境分布差异

IF 2.5 3区 环境科学与生态学 Q2 ECOLOGY Ecohydrology Pub Date : 2024-05-02 DOI:10.1002/eco.2657
Li Wang, Qingrong Xie, Shengfa Yang, Guanbing Xu, Wei Yang, Jiang Hu
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引用次数: 0

摘要

越来越多的文献详细记录了下游河流中大坝建设引起的鱼类栖息地变化。大坝背水区的鱼类栖息地发生了巨大变化,但人们对这些变化的了解仍然很少。本研究旨在更全面地了解大坝上游鱼类栖息地的分布情况,并阐明鱼类栖息地的利用模式,以便采取有效的补救活动。三峡大坝是世界上装机容量最大的水电站,回水区长约 660 公里。研究选取了四大家鱼(FMCC)作为目标鱼种,并结合不同鱼种在关键生命阶段的游动能力和环境偏好,评估了三峡大坝上游的鱼类栖息地分布。目标鱼种不同生命阶段的评估结果表明,6 月是大亚湾溯河波动区大口鲶产卵活动的关键时期,河岸是大口鲶重要的觅食栖息地。河岸是洄游鱼类重要的觅食栖息地,河道中心的高速水流超过了目标鱼类的游动能力极限。4 月至 9 月的径流和 10 月至翌年 3 月的大坝运行对天津港发展区波动回水区的鱼类栖息地分布影响很大。这项工作为大沽河上游的河流保护和管理提供了有价值的信息。
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Dam-induced difference of fish habitat distribution in the fluctuating backwater zone of the Three Gorges Dam

Changes in fish habitat induced by dam construction in the downstream river have been well documented in an increasing body of literature. Fish habitats in the backwater zone of dams have undergone dramatic changes, which have still remained poorly understood. This study aims to provide a more complete understanding of fish habitat distribution and clarify fish habitat utilization patterns in the upstream dam in order to adopt effective remediation activities. This study was conducted in the Three Gorges Dam (TGD) as it is the world's largest installed capacity hydropower station, with a backwater zone length of about 660 km. Four major Chinese carp (FMCC) were selected as target fish species, and fish habitat distribution upstream of TGD was assessed by integrating the swimming ability and environmental preference of different fish species into their critical life stages. Assessment results at different life stages of the target fish species showed that June was a critical period for spawning activities FMCC in the fluctuating backwater zone of TGD. The riverbank was an important feeding habitat for FMCC, and the high-velocity flow in the centre of the channel exceeded the limits of the swimming ability of target fish. The fish habitat distribution in the fluctuating backwater zone of TGD was heavily affected by runoff from April to September and by dam operation from October to March of the next year. This work provide valuable information about river conservation and management in the upstream of TGD.

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来源期刊
Ecohydrology
Ecohydrology 环境科学-生态学
CiteScore
5.10
自引率
7.70%
发文量
116
审稿时长
24 months
期刊介绍: Ecohydrology is an international journal publishing original scientific and review papers that aim to improve understanding of processes at the interface between ecology and hydrology and associated applications related to environmental management. Ecohydrology seeks to increase interdisciplinary insights by placing particular emphasis on interactions and associated feedbacks in both space and time between ecological systems and the hydrological cycle. Research contributions are solicited from disciplines focusing on the physical, ecological, biological, biogeochemical, geomorphological, drainage basin, mathematical and methodological aspects of ecohydrology. Research in both terrestrial and aquatic systems is of interest provided it explicitly links ecological systems and the hydrologic cycle; research such as aquatic ecological, channel engineering, or ecological or hydrological modelling is less appropriate for the journal unless it specifically addresses the criteria above. Manuscripts describing individual case studies are of interest in cases where broader insights are discussed beyond site- and species-specific results.
期刊最新文献
Issue Information Temperature-driven convergence and divergence of ecohydrological dynamics in the ecosystems of a sky island mountain range Issue Information Soil Building and Capillary Barrier–Enhanced Water Availability Help Explain Pisonia grandis and Other Atoll Native's Tolerance for Variable Precipitation Regimes Analysis of Research Hot Spots in Chinese and International English Ecohydrological Literature
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