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  • 崔国辰,朱文斌,戴乾,李哲,卢占晖,刘连为,朱海晨.西北太平洋鲐鱼渔场的时空分布及其与海表温度和叶绿素浓度的关系[J].海洋开发与管理,2021,38(8):95-99    
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西北太平洋鲐鱼渔场的时空分布及其与海表温度和叶绿素浓度的关系
崔国辰,朱文斌,戴乾,李哲,卢占晖,刘连为,朱海晨
浙江海洋大学海洋与渔业研究所;浙江省海洋水产研究所 农业农村部重点渔场渔业资源科学观测实验站 浙江省海洋渔业资源可持续利用技术研究重点实验室;浙江省海洋水产研究所 农业农村部重点渔场渔业资源科学观测实验站 浙江省海洋渔业资源可持续利用技术研究重点实验室
摘要:
鲐鱼(Scomber japonicus)是西北太平洋的重要捕捞对象,其分布易受环境变化的影响。为定量分析海表温度和叶绿素浓度等影响因子对渔场分布的作用,文章采用产量重心、地统计插值和广义加性模型等方法,结合2017年西北太平洋2艘灯光敷网渔船的渔捞日志和海洋环境数据,探究该海域的渔场分布变化。研究结果表明:鲐鱼产量和单位捕捞努力量渔获量(CPUE)呈先上升后下降的趋势,其中7月的产量最高,9月的CPUE最高;产量重心于4-9月由SW方向向NE方向移动,并于9-12月返回SW方向;鲐鱼渔场的最适海表温度为14℃~16℃,最适叶绿素a浓度为0.4~1.0 mg/m3;叶绿素a浓度对渔场分布无显著影响,可能与鲐鱼摄食对象的特性有关。
关键词:  鲐鱼  海表温度  叶绿素浓度  产量重心  远洋渔业
DOI:
基金项目:国家重点研发计划项目(2019YFD0901505);浙江省科学技术厅2018年度重点研发计划项目(2018C02026).
Temporal and Spatial Distribution of the Mackerel Fishing Ground in the Northwest Pacific and Its Relationship with Sea Surface Temperature and Chlorophyll Concentration
CUI Guochen,ZHU Wenbin,DAI Qian,LI Zhe,LU Zhanhui,LIU Lianwei,ZHU Haichen
Marine and Fisheries Research Institute of Zhejiang Ocean University;Key Research Station for Fisheries Resources of Main Fishing Ground,MARA,Key Research Station of Sustainable Utilization for Marine Fisheries Resources,Zhejiang Marine Fisheries Research Institute
Abstract:
Scomber japonicus in the Northwest Pacific Ocean is an important fishing target, and its distribution is susceptible to environmental changes. For quantitative analysis of SST and Chlorophyll-a concentration factors effect on the distribution of the fishing grounds, the center of gravity method, geostatistical interpolation, and generalized additive model were used to explore the sea fishery distribution change in the Northwest Pacific Ocean in 2017 by combining the fishing logs of 2 light drip-net fishing vessels and marine environmental data. The results showed that the yield and CPUE of Scomber japonicus increased first and then decreased, with the highest yield in July and the highest CPUE in September. The yield center moved from southwest to northeast from April to September, and returned to southwest from September to December. The optimum SST of Scomber japonicus in fisheries was 14°C~16°C, and the optimum concentration of Chl-a was 0.4~1.0 mg/m3. The concentration of Chl-a had no significant effect on the variation of Scomber japonicus in fishery, which might be related to the characteristics of feeding target.
Key words:  Scomber japonicus,Sea surface temperature,Chlorophyll concentration,Yield center,Pelagic fishery