人民长江2025，Vol.56Issue(3)：79-86,8.DOI:10.16232/j.cnki.1001-4179.2025.03.011
河流丁坝群对草鱼集群上溯行为的影响研究
Effect of riverine spur-dike group on upstream behavior of grass carp clusters
摘要
Abstract
As a common waterway improvement structure,spur-dike group changes fish habitats while altering the flow struc-ture.To investigate effects of riverine spur-dike group on fish swimming behavior,we took juvenile grass carp as the research ob-ject and carried out a flume test of fish cluster swimming behavior,calculating its instantaneous power and energy efficiency during up streaming,to evaluate the up streaming behavior characteristics and energy dissipation of the test fish group.The results showed that:① the slow-flow deep pool area behind the dam provided a stable habitat for the fish,and the higher the flow rate was,the more fish up streaming through the deep pool area.②The peak flow velocity along the up streaming path of the experimental fish group was at downstream of the dam,and the higher the flow rate was,the more pronounced the peak flow velocity hysteresis was.③ There was a linear correlation between the average frequency of tail swing of the fish and the flow rate,and the energy use effi-ciency of the fish was lower when the flow rate was higher;and the energy use efficiency was lower when the flow rate was lower than the flow rate.As the flow rate increased,the energy utilization efficiency of the fish population decreased,and when the rela-tive Reynolds number was 213×103 m-1,the energy utilization efficiency of the fish population was the lowest.关键词
丁坝群/草鱼幼鱼/集群游泳/上溯/能量利用效率Key words
spur-dike group/juvenile grass carp/cluster swimming/up streaming/energy efficiency分类
环境科学引用本文复制引用
黄睿,胡江,张漫,颜行,张渝..河流丁坝群对草鱼集群上溯行为的影响研究[J].人民长江,2025,56(3):79-86,8.基金项目
国家重点研发计划项目(2023YFC3208800) （2023YFC3208800）
重庆市自然科学基金创新发展联合基金项目(CSTB2023NSCQ-LZX0157) （CSTB2023NSCQ-LZX0157）
长江黄金航道科技攻关项目(CJHDJHT20211200041) （CJHDJHT20211200041）
