| 春季黄河口海域2种网具渔获物组成的比较分析 |
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| 引用本文： | 张旭,张秀梅,高天翔.春季黄河口海域2种网具渔获物组成的比较分析[J].南方水产,2010,6(1):59-67. |
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| 作者姓名： | 张旭 张秀梅 高天翔 |
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| 作者单位： | 中国海洋大学海水养殖教育部重点实验室,山东,青岛,266003 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)项目(2005CB422306);;908专项“我国近海海洋综合调查与评价”(908-01-ST02) |
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| 摘 要： | 根据2007年5月在黄河口海域弓子网和小型单船底拖网渔业资源调查资料，分析了2种网具的渔获物种类组成，并分别计算了Sorensen相似性指数（SS）、种类丰富度指数（R）、Shannon—Wiener多样性指数（H＇）、Pielou均匀度指数（J＇）和相对重要性指数（index of relative importance，IRI）。弓子网和底拖网的SS指数为0．63，2种网具渔获物组成的相似性较差。弓子网和底拖网的R、H’、J’指数分别为3．61、2．28、0．64和3．55、2．40、0．72，底拖网渔获物多样性程度高于弓子网。分析结果表明，2种网具的单位功率渔获量（catch per unit effort，CPUE）均不高，且存在选择性差和对幼体生物伤害严重的问题。
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| 关 键 词： | 黄河口 渔获物组成 底拖网 弓子网 |
Comparative analysis on catch composition with two fishing gears at Yellow River estuary in spring |
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| ZHANG Xu,ZHANG Xiumei,GAO Tianxiang.Comparative analysis on catch composition with two fishing gears at Yellow River estuary in spring[J].South China Fisheries Science,2010,6(1):59-67. |
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| Authors: | ZHANG Xu ZHANG Xiumei GAO Tianxiang |
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| Institution: | The Key Lab. of Maricultrue/a>;Ministry of Education/a>;Ocean University of China/a>;Qingdao 266003/a>;China |
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| Abstract: | Based on the survey data obtained by beam trawl and single-boat bottom trawl at Yellow River estuary in May 2007,a comparative study on the catch composition with two fishing gears was analyzed;indices of Sorensen similarity(SS),species richness(R),Shannon-Wiener diversity(H),Pielou evenness(J') and index of relative importance(IRI) were calculated.The similarity of catch composition between beam trawl and bottom trawl was relatively small with a Sorensen similarity of 0.63.Indices R,H' and J' of beam trawl... |
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| Keywords: | Yellow River estuary catch composition bottom trawl beam trawl |
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