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    舟山漁場甲天下

    2019-3-3 23:29| 發布者: 天空之城| 查看: 380| 評論: 0|原作者: 科普中國|來自: 科普中國

    摘要: 20世紀50年代,渤海灣漁場、舟山漁場、北部灣漁場和南海漁場被稱為我國著名的四大漁場。其中,舟山漁場是我國最大的漁場。

    20世紀50年代,渤海灣漁場、舟山漁場、北部灣漁場和南海漁場被稱為我國著名的四大漁場。其中,舟山漁場是我國最大的漁場,漁業資源豐富,約有360種魚類、60種蝦類、11種蟹類、134種貝類,多數品種產量高、經濟效益好。其中,大黃魚的歷史最高年產量達10.16萬噸,小黃魚的歷史最高年產量達2.9萬噸,帶魚的歷史最高年產量達21.44萬噸,烏賊的歷史最高年產量達2.96萬噸,歷史最高總年產量達50.06萬噸。


    為什么舟山漁場的漁業資源如此豐富呢?


    3c4f99d99698487fa3ca12f7d87158dd.jpeg



    舟山漁場的地理位置十分優越,它位于浙江省舟山群島附近海域,分布范圍為29°30′N~31°00′N,125°00′E以西,屬于亞熱帶季風氣候,水溫條件適合多種魚類的生長。冬季,水溫由陸地向海洋方向呈遞增趨勢,外側海域給魚類提供了優越的越冬場。受緯度位置的影響,該海域是某些魚類洄游的必經海域,從而進一步豐富了漁場的魚類資源。


    舟山漁場的沿岸河流的流域范圍廣,雨水補給充足,徑流量巨大,河流攜帶大量泥沙和營養鹽等物質注入舟山海區,為漁場帶來大量浮游生物,與海水營養鹽類相結合,促使其迅速生長繁殖。地理、水文、生物等優越的自然條件,使舟山漁場及其附近海域成為適宜多種魚類繁殖、生長、索餌、越冬的生活棲息地。


    舟山漁場還具有優越的索餌場。舟山漁場沿岸的海岸線曲折,舟山群島島礁眾多,為各種魚類提供了有利的棲息場所,有利于魚類資源生長和繁殖。因此,舟山漁場具有豐富的漁業資源。



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