| 渤海主要渔业生物资源变动的研究 |
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| 引用本文： | 金显仕.渤海主要渔业生物资源变动的研究[J].中国水产科学,2000,7(4):22-26. |
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| 作者姓名： | 金显仕 |
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| 作者单位： | 中国水产科学研究院,黄海水产研究所,山东,青岛,266071 |
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| 基金项目： | 国家自然科学基金重大项目资助! (49790 10 0 1) |
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| 摘 要： | 根据１９５９年、１９８２～１９８３年、１９９２～１９９３和１９９８～１９９９年在渤海进行的周年分季度底拖网调查数据，分析了渤海主要渔业生物种类的资源变化特征。１９５９～１９８２年间，优势种发生了很大的变化，经济价值较高的小黄鱼、带鱼和对虾等由黄鲫、Ｔｉ鱼、枪乌贼等小型低值种类所替代。８０年代以来，年间优势种有一定的变动，但小型中小层鱼类Ｔｉ鱼、黄鲫、斑Ｊｉ等一直是渤海渔业生物优势种类。１９９８～１
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| 关 键 词： | 渤海 渔业资源 优势种类 资源变动 生物资源 |
| 修稿时间： | 2000-03-27 |
The dynamics of major fishery resources in the Bohai Sea |
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| JIN Xian-shi.The dynamics of major fishery resources in the Bohai Sea[J].Journal of Fishery Sciences of China,2000,7(4):22-26. |
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| Authors: | JIN Xian-shi |
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| Abstract: | This research was conducted based on the bottom trawl surveys by season or month from 1959 to 1999.The dominant species in the Bohai Sea changed obviously from 1959 to 1982 that the high valued,commercially important species such as small yellow croaker (Pseudosciaena polyactis), largehead hairtail (Trichiurus haumela), and fleshy prawn (Penaeus chinensis) were replaced by low valued, small sized species such as anchovy (Engraulis japonicus), half fin anchovy (Setipinna taty) etc. Although the dominant species in some extent varied between years, the small pelagic fish,such as anchovy, half fin anchovy and gizzard fish (Clupanodon punctatus) have dominated the fishery resources since 1980s. During 1998 1999, the biomass of most fishery species declined to a very low level, particularly the biomasses of small pelagic fish and economic important invertebrate sharply decreased with the reduce of their distribution areas, which directly affected the growth of carnivorous fishes, such as Spanish marckerel (Scomberomorus niphonius). Over exploitation and environmental degradation have broken down the Bohai Sea ecosystem, and reduced its resilience and stability. |
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| Keywords: | Bohai Sea fishery resources dominant species resources variation |
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