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    舟山漁場實現漁業資源可持續利用和健康發展的新模式

    2019-3-4 00:13| 發布者: 天空之城| 查看: 275| 評論: 0|原作者: 網絡綜合

    摘要: 舟山漁場是世界著名的四大漁場之一。目前在近海水產資源嚴重衰退情況下,選擇特定海域,通過投放人工魚礁、增殖放流等措施,是修復海洋生物繁殖、生長場所,改善海域生態環境,實現漁業資源可持續利用和健康發展的一 ...
                舟山漁場是世界著名的四大漁場之一。目前在近海水產資源嚴重衰退情況下,選擇特定海域,通過投放人工魚礁、增殖放流等措施,是修復海洋生物繁殖、生長場所,改善海域生態環境,實現漁業資源可持續利用和健康發展的一種新模式。



    投放人工魚礁:


    c9fcc3cec3fdfc037ab40b2dd33f8794a5c22653.jpg



          魚礁是適合魚類群集棲息、生長繁殖的海底礁石或其他隆起物。其周圍海流將海底的有機物和近海底的營養鹽類帶到海水中上層,促進各種餌料生物大量繁殖生長,為魚類等提供良好的棲息環境和索餌繁殖場所,使魚類聚集而形成漁場。常選擇適宜的海區,投放石塊、樹木、廢車船、廢輪胎和鋼筋水泥預制塊等,以形成人工礁,可誘集和增加定棲性、洄游性的底層和中上層魚類資源,形成相對穩定的人工魚礁漁場。


           據統計,自2003年以來,舟山市共投入資金1.25億元,先后在中街山列島和馬鞍列島等海域,投放各類人工魚礁47.5萬空立方米,為海洋戀礁性魚類建造了新家園。




    增殖放流:





          人工增殖放流是用人工方法直接向海洋、灘涂、江河、湖泊、水庫等天然水域投放或移入漁業生物的卵子、幼體或成體,以恢復或增加種群的數量,改善和優化水域的群落結構。廣義的講還包括改善水域的生態環境,向特定水域投放某些裝置(如附卵器、人工魚礁等)以及野生種群的繁殖保護等間接增加水域種群資源量的措施。


         2017年9月26日,寧波一條9.8斤重的大黃魚賣出14.8萬元,一輛轎車的價格;
         2018年9月,上海“西郊5號”一張天價菜單火爆全國,菜品上價格最高的就是一條野生大黃魚,7.4斤,總價格11.6920萬元。
        2018年12月12日,網友爆料,舟山又捕獲5.2斤野生大黃魚?業內人士:大都是增殖放流的魚苗長大的。




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