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根据浙江近海鲐鱼生产统计数据和东海北部即日本五岛西部、济州岛西南部等海域鲐鱼资源量数据,以及海表水温、Nio 3.4指数,利用相关分析法,分析了海洋环境对东海鲐鱼资源影响的异同性。结果表明:东海海表水温与浙江近海鲐鱼CPUE呈正相关关系(P<0.05),而与东海北部鲐鱼资源量呈负相关关系(P<0.05);利用当年1至3月Nio 3.4区表温距平值的平均值能粗略反映鲐鱼资源的丰歉情况,当平均温度距平为正时,资源量一般较好;当平均温度距平为负时则资源量较差的可能性较大。海表水温变化会对鲐鱼洄游路线产生影响,引起鲐鱼资源不均匀分布,使鲐鱼资源量与海表水温呈不同关系;拉尼娜事件对东海不同海域鲐鱼资源均产生不利影响,但其原因有待进一步研究;据此,建议对东海鲐鱼资源进行评估应考虑其资源量分布时空动态的特点。
Based on the statistical data of production of anchovies from the offshore areas of Zhejiang Province and the data of the marine catfish resources in the northern part of the East China Sea, ie, the western part of Japan’s Wushu Island and the southwestern part of Jeju Island, and the sea surface water temperature and Nio 3.4 index, the correlation between the marine environment and the sea anchovy Similarities and Differences in Resource Impact. The results showed that there was a positive correlation between the sea surface temperature in the East China Sea and the CPUE in the coastal freshwater prawn (P <0.05) in Zhejiang Province, but negatively correlated with the marine resources in the northern part of the East China Sea (P <0.05) The average value of the average temperature anomaly can roughly reflect the apricot resources apricot situation, when the average temperature anomaly is positive, the amount of resources is generally good; when the average temperature anomaly is more likely to be poor resources . The change of sea surface water temperature will affect the migratory route of the anchovy, causing the uneven distribution of the anchovy resources, resulting in a different relationship between the amount of anchovy resources and the surface water temperature; La Niña events have an adverse effect on the anchovy resources in different sea areas of the East China Sea, but the reasons for further study ; Accordingly, it is suggested that the assessment of the Mackerel resources in the East China Sea should take into account the spatial and temporal dynamics of the distribution of its resources.