作　　者： ; ; ; ; ; ;

机构地区： 中国水产科学研究院东海水产研究所

出　　处： 《农业资源与环境学报》 2015年第3期242-249,共8页

摘　　要： 利用我国2002—2012年5—11月北太平洋鱿钓渔业的生产资料,结合同期卫星遥感反演技术获取的海表温度（SST）、海水叶绿素（Chl-a）、海流等数据,运用产量重心法和广义加性模型（GAM）,分析了北太平洋公海柔鱼渔场渔获量变化与海洋环境关系的季节性变化。研究结果显示北太平洋柔鱼5—6月渔场重心位于中、东部渔场,在168°～171°E、38°～39°N的范围;7—11月集中在西部渔场,重心位于150°～160°E、40°～44°N的范围,渔场重心伴随着明显的季节性变化。通过GAM模型综合分析发现整个渔汛期的北太平洋柔鱼渔场最适SST范围为14～19℃;最适Chl-a范围为0.22～0.55 mg·m^-3;集中的经度范围为154°～157°E;集中出现的纬度范围为41°～44°N。柔鱼活动呈现每年北上索饵洄游和南下活动产卵洄游,与环境因素的关系表现出不同的特征,尤其是SST相关性最好,从5月到9月SST与渔场重心的关系在北上时呈正相关,从9月到11月南下时为负相关,呈现明显的季节性变化。另外海流对渔场的影响甚为重要,高产渔场一般位于黑潮、亲潮交汇区域的黑潮前锋、亲潮向背一侧附近,随着暖、寒流的此消彼长而变化。 Abstract： The relationship of marine environment and squid fishing fluctuation in North Pacific Ocean was analyzed with the method of pro- duction gravity center and generalized additive model（GAM ）, through the surface temperature, sea chlorophyll and ocean current data got by satellite remote sensing inversion technology, and the statistic of boat fishing in the North Pacific from 2002 to 2012. The results showed that gravity center of fisheries was located in the eastern and central fishing grounds in May and June. The range was 168°～171°E, 38°～39°N. Gravity center of fisheries was located in western traditional fishing grounds from July to November with range of 150°～160°E, 40°-44°N. Gravity center of fisheries had obvious seasonal changes. GAM module analysis indicated that appropriate sea surface temperature scope of high squid fisheries was 14～ 19 ℃. The appropriate chlorophyll concentration scope of high squid fisheries was 0.22-0.55 mg·m^-3. The distri- bution range was 154°-157°E in longitude, and 41°～44°N in latitude. There was a feeding migration to north and spawning migration to south every year, its relationship with environmental factors showed different characteristics, especially the best correlation of sea surface temperature. The gravity center of fisheries and sea surface temperature were positively correlated during the northward migration from May to September, while negatively correlated during the south migration from September to November. It showed obvious seasonal changes. Current also had an important impact on fisheries. Under the interaction of Kuroshio and Oyashio, high catch fishing grounds usually located in the forward of Kuroshio and nearby the northern side of Oyashio, with the shift of warm and cold current changing.

关 键 词： 柔鱼渔场 北太平洋 海洋环境 海表温度 模型

领　　域： [农业科学] [农业科学]