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根据1997-2000年东海23°30′～33°N、118°30′～128°E海域4个季节海洋调查资料,运用定量、定性分析方法,探讨了东海浮游磷虾类总丰度的平面分布、季节变化,相应的动力学及与渔场的关系。结果表明,东海磷虾类总丰度秋季最高,春季次之,冬季最低;冬,春,夏季的小型磷虾(Euphausianana)和秋季的中华假磷虾(Pseudeuphausiasinica)对总丰度的贡献较大,是影响磷虾类总丰度变化的主要优势种;冬、春和秋季总丰度与水文环境因子的线性相关性不显著,夏季总丰度与底层温度和10m层盐度的二元线性相关关系非常显著。秋季磷虾高丰度区位于台湾暖流与各水团的交汇处。磷虾类总丰度的变化动力来自水团的影响和主要优势种对总丰度变化的回归贡献,后者与优势种的生态习性有关。磷虾类秋季高丰度区的分布与带鱼、小黄鱼和日本鲭索饵场的位置基本一致。
According to the four seasons marine survey data in the East China Sea from 23 ° 30 ’to 33 ° N and 118 ° 30’ ~ 128 ° E from 1997 to 2000, the total abundance of planktonic krill in the East China Sea was studied by quantitative and qualitative methods Distribution, Seasonal Changes, Corresponding Kinetics and Relationship with Fisheries. The results showed that the total abundance of krill in the East China Sea was the highest in autumn, followed by the spring and the lowest in winter. The contribution of Euphausianana in winter, spring and summer and Pseudeuphausiasinica in autumn to the total abundance was larger , Which was the dominant species that affected the total abundance of krill. The linear correlation between total abundance and hydrological environmental factors in winter, spring and autumn was insignificant. The linear relationship between the total abundance in summer and the bottom temperature and salinity in 10 m layer The correlation is very significant. Autumn krill high abundance area is located in Taiwan warm current and the water mass of the confluence. The dynamics of the total abundance of krill vary from the water mass and the contribution of the dominant species to the change in total abundance, which is related to the ecological habits of the dominant species. The distribution of high-abundance areas of krill in autumn was basically the same as that of octopus, small yellow croaker and Japanese mackerel.