调水调沙前后黄河口渔业资源结构变化

发布时间：2018-06-26 02:06

本文选题：黄河口 + 调水调沙　；参考：《中国水产科学》2017年05期

【摘要】：黄河口调水调沙是以人工调控的方式将淤积的泥沙送入大海,增加河床和水库主槽行洪能力的过程。根据2011 2013年调水调沙前(6月)、后(7月)在黄河口海域的渔业资源调查数据,利用相对优势度指数、方差分析以及多元统计分析等方法,研究了该海域夏季渔业资源密度、种类组成、优势种及其年际变化,并探讨调水调沙对黄河口渔业资源结构的影响。结果表明,本次调查共鉴定渔业资源生物92种,其中鱼类52种;黄河口主要优势种为矛尾虾虎鱼(Chaemrichthys stigmatias)、枪乌贼(Loligo spp.)和葛氏长臂虾(Palaemon gravieri)等,各年份优势种有所变动;夏季渔业资源量有明显年际波动,在2011—2013年呈先增加后减少的趋势,各年间差异显著;黄河口渔业资源结构在调水调沙前后有明显变化,调水调沙后渔业资源平均密度增大,且近河口区资源密度较小;CLUSTER聚类分析表明黄河口渔业资源结构年际变化最为明显,其次是调水调沙前后的变化,而断面间的差异性最低。结论认为,黄河调水调沙引起的径流量、营养盐变化可能是引起调水调沙前后渔业资源种类组成、资源量变化的重要原因。
[Abstract]:Water and sediment transfer in the Yellow River Estuary is a process in which silting sediment is transported to the sea by artificial control to increase the flood discharge capacity of the riverbed and the main channel of the reservoir. Based on the survey data of fishery resources in the Yellow River Estuary area before (June) and later (July) in 2011 and 2013, the relative dominance index, variance analysis and multivariate statistical analysis were used to study the density of fishery resources in this area in summer. Species composition, dominant species and their interannual variation, and the effects of water and sediment transfer on fishery resources structure in the Yellow River Estuary were discussed. The results showed that there were 92 species of fishery resources, including 52 species of fish, and the dominant species in the Yellow River estuary were Chaemrichthys stigmatias), squid (Loligo spp.) And Palaemon gravieri, the dominant species changed in each year, and the fishery resources in summer fluctuated obviously, which increased first and then decreased in 2011-2013, and the difference was significant in each year. The structure of fishery resources in the Yellow River Estuary changed obviously before and after the water and sediment transfer, and the average density of fishery resources increased after the water and sediment transfer, and the cluster analysis of CLUSTER showed that the interannual variation of fishery resources structure in the Yellow River Estuary was the most obvious. The second is the change before and after water transfer and sediment regulation, while the difference between sections is the lowest. It is concluded that the variation of runoff and nutrient salt caused by water and sediment transfer in the Yellow River may be an important reason for the change of fishery resources before and after water and sediment transfer.
【作者单位】：中国海洋大学水产学院;山东省海洋资源与环境研究院;
【基金】：公益性行业(农业)科研专项经费项目(201303050) 青岛海洋科学与技术国家实验室鳌山科技创新计划项目(2015ASKJ02)
【分类号】：S931.1

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