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根据鄂霍茨克公海区狭鳕资源声学评估调查资料 ,研究了狭鳕分布状况及渔场环境特征 ,并分析了狭鳕行动分布与环境的关系 .结果表明 ,8月公海区狭鳕密集群位于 5 5°N以北、水深小于 5 0 0m的海域 ,其主要分布水层在 15 0～ 30 0m之间 ;调查期间狭鳕只为索饵群体 ,主要摄食太平洋磷虾 ,狭鳕密集区一般也为太平洋磷虾高密度分布区 ;8月公海区水温跃层大致在 0～ 5 0m之间 ,强度为 0 .2 5℃·m-1左右 ;冷水团位于 5 0～ 15 0m之间 ;由于温跃层的屏障作用和饵料因素的影响 ,狭鳕主要分布于冷水团以下的水层 .40 0m以下的水层狭鳕分布稀少 ,部分原因是溶解氧含量过低 .
According to the survey data of acoustic pollution of pollock resources in the high sea area of Okhotsk, the distribution of pollock and the characteristics of fishery environment were analyzed, and the relationship between pollock distribution and environment was analyzed.The results showed that in August, In the area north of 5 ° N and the water depth of less than 500 m, the main distribution water layer is between 15 0 and 30 0 m. During the investigation, pollock only served as a bait feeding group, mainly feeding Pacific krill and pollock-intensive areas Also for the Pacific krill high-density distribution area; in August the sea water thermocline roughly in the 0 ~ 50m, the intensity of 0. 25 ℃ · m-1 or so; cold water mass is located between 50 ~ 15 0m; Due to the barrier function of the thermocline and feeding factors, the pollock mainly distributes in the water layer below the cold water mass, and the distribution of the pollock in the water layer below 40m is sparse, partly due to the low dissolved oxygen content.