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为了解我省海洋渔业资源储量及其动态变化规律、实现保护和合理开发利用渔业资源,也为渔业行政部门加强渔业管理、制定渔业法律法规提供可靠的依据和数据,我所于2004年开展本项调查工作,调查范围为东起山海关南至大口河,使用疏目拖网从岸边向里延伸12海里,每季完成站位36个,每站拖网时间为1h,平均拖速为2.609节。通过调查发现,2004年渤海渔业资源量又有所下降,春季在调查海域共捕获生物资源33种,夏季在调查海域共捕获生物资源34种,与1984年相比,鱼类减少32种,甲壳类减少3种,头足类减少2种。减少的种类大多数为底层的鲆、鲽、鳎、鲷及类等。
To understand the province’s marine fisheries reserves and its dynamic changes in the law to achieve the protection and rational development and utilization of fishery resources, but also for the fisheries administration to strengthen fisheries management, fishery laws and regulations to provide reliable basis and data, I carried out in 2004 The investigation ranged from Shanhaiguan South to Dakouhe from east to east, extending 12 nautical miles inward from the shore using sparse-tipped trawls, completing 36 stations each quarter and trawling at each station for 1 hour with an average trailing speed of 2.609 knots. According to the survey, in the Bohai Sea in 2004, the amount of fishery resources decreased again. In spring, 33 species of biological resources were captured in the surveyed waters. In summer, 34 species of biological resources were captured in the surveyed sea areas. Compared with 1984, the number of fish species decreased by 32 species. 3 species decrease, 2 species decrease by cephalopods. Most of the species reduced to the bottom of the flounder, 鲽, 鳎, bream and class.