广西科学院学报2025，Vol.41Issue(4)：445-455,11.DOI:10.13657/j.cnki.gxkxyxb.20260107.009
禁渔初期长江上游江津段鱼类群落结构研究及禁渔效果分析
Study on Fish Community Structure and Analysis of Fishing Ban Effect in the Early Stage of Fishing Ban in the Jiangjin Section of the Upper Yangtze River
摘要
Abstract
To understand the status of fish community structure in the Jiangjin section of the upper Yangtze River during the early period of the fishing ban,active fishing was conducted using three-layer composite gill-nets and bottom cage nets in May and September 2023 to investigate the fish resource status and fish commu-nity structure in this waters.The results showed that 80 fish species were captured in the survey,belonging to 4 orders,12 families,and 51 genera.Among them,there were 16 rare and endemic fish species,accounting for 16.44％of the total number and 41.22％of the total weight.The fish community is dominated by dem-ersal,omnivorous,small and medium-sized fish.Megalobrama pellegrini and Pelteobagrus vachelli were the dominant species.Shannon-Wiener index,Margalef index,Simpson index and Pielou index were 2.32-3.31,5.00-7.08,0.83-0.95,0.44-0.61,respectively.The Abundance/Biomass Comparison curve(ABC curve)showed that the fish community structure in the Jiangjin section was relatively stable and less disturbed.In summary,the fish community structure in the Jiangjin section is stable and maintains a high level of biodiver-sity in the early stage of fishing ban,and the trend of resource decline has been alleviated to some extent.关键词
长江十年禁渔/江津段/鱼类/群落结构/效果评估Key words
10-year fishing ban on the Yangtze River/Jiangjin section/fish/community structure/effect evalu-ation分类
农业科技引用本文复制引用
马芊芊,张闯,李燕..禁渔初期长江上游江津段鱼类群落结构研究及禁渔效果分析[J].广西科学院学报,2025,41(4):445-455,11.基金项目
长江上游珍稀特有鱼类国家级自然保护区重庆段2023年鱼类资源监测评价项目资助. （）
