摘要
通过对2009年北太平洋我国鱿钓船的生产统计资料,结合遥感技术获取的海表面水温(SST)、叶绿素a、海流等数据进行分析,对北太平洋柔鱼产量大幅下滑的原因进行了分析。研究认为:SST比往年偏低,使得柔鱼资源补充量的减少,直接导致了北太平洋柔鱼产量大幅下滑;叶绿素a浓度分布波动较大,这一反常现象很可能导致了在传统作业海域渔汛后期,特别是9、10月份无法形成像往年那样正常的大规模渔场;由于海流的波动较大,导致饵料生物分布不稳定,没有大规模的集中分布,以致柔鱼在其索饵、性成熟的洄游过程中受到影响;如水温因子、黑潮的变动和恶劣的天气等不利海况也可能是造成2009年北太平洋柔鱼产量大幅下降的主要因素之一。
The reasons of sharp drop in squid jigging production in the North Pacific in 2009 were analyzed through related production statistics of squid fishing vessels and data of SST,chlorophyll a,sea currents by remote sensing images in the operation area.The study showed that the reduction of stock recruitment due to the lower SST led to the sharp drop in squid production of the North Pacific in 2009,the chlorophyll a concentration fluctuation was too high in the late fishing season to form large-scale fisheries in traditional fishing waters especially in September and October,the changing currents led to unstable distribution of food organisms to affect the migratory processes of squid feeding and sexual maturation.At last,the bad conditions may also be one of the major factors caused sharp decline in squid production in North Pacific,such as temperature,dynamics of the Kuroshio and poor weather conditions.
出处
《海洋技术》
北大核心
2011年第2期7-12,共6页
Ocean Technology
基金
国家高技术研究发展计划(863计划)资助项目(2007AA092202)
国家科技支撑计划资助项目(2006BAD09A05)
关键词
柔鱼
北太平洋
叶绿素A
海流
资源补充量
neon flying squid
North Pacific Ocean
chlorophyll a
current
stock recruitment
