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ISSN 2095-1388

主管 辽宁省教育厅

主办 大连海洋大学

基于GAM和BRT模型的不同渔汛期水温垂直结构对西北太平洋柔鱼CPUE的影响

2023. 基于GAM和BRT模型的不同渔汛期水温垂直结构对西北太平洋柔鱼CPUE的影响. 大连海洋大学学报, 38(6): 1063-1071. doi: 10.16535/j.cnki.dlhyxb.2023-041
引用本文: 2023. 基于GAM和BRT模型的不同渔汛期水温垂直结构对西北太平洋柔鱼CPUE的影响. 大连海洋大学学报, 38(6): 1063-1071. doi: 10.16535/j.cnki.dlhyxb.2023-041
LIU Yue, CHEN Xinjun, WANG Jintao. 2023. Impact of vertical structure of water temperature during different fishing seasons on CPUE of neon flying squid (Ommastrephes bartramii) in the Northwest Pacific Ocean using GAM and BRT models. Journal of Dalian Ocean University, 38(6): 1063-1071. doi: 10.16535/j.cnki.dlhyxb.2023-041
Citation: LIU Yue, CHEN Xinjun, WANG Jintao. 2023. Impact of vertical structure of water temperature during different fishing seasons on CPUE of neon flying squid (Ommastrephes bartramii) in the Northwest Pacific Ocean using GAM and BRT models. Journal of Dalian Ocean University, 38(6): 1063-1071. doi: 10.16535/j.cnki.dlhyxb.2023-041

基于GAM和BRT模型的不同渔汛期水温垂直结构对西北太平洋柔鱼CPUE的影响

  • 基金项目:

    国家重点研发计划"蓝色粮仓科技创新"项目(2019YFD0901404);国家自然科学基金(NSFC41876141);上海市科技创新行动计划项目(19DZ1207502)

详细信息
    作者简介:

    刘月(1998-),女,硕士研究生。E-mail:2228264201@qq.com

  • 中图分类号: S 931

Impact of vertical structure of water temperature during different fishing seasons on CPUE of neon flying squid (Ommastrephes bartramii) in the Northwest Pacific Ocean using GAM and BRT models

  • Fund Project: 国家重点研发计划"蓝色粮仓科技创新"项目(2019YFD0901404);国家自然科学基金(NSFC41876141);上海市科技创新行动计划项目(19DZ1207502)
  • 为探究水温对西北太平洋柔鱼(Ommastrephes bartramii)单位捕捞努力量渔获量(CPUE)的影响,利用2015—2019年间5—11月西北太平洋柔鱼的生产统计数据,结合同时期海洋环境数据,对不同渔汛阶段分别采用广义加性模型(generalized addictive models, GAM)及提升回归树(boosting regression tree,BRT)模型,分析不同水层(0~300 m)温度及垂直温度梯度对CPUE的影响,并采用多次十折交叉验证评估了两种模型的稳定性和准确性。结果表明:渔汛初期(5—7月),GAM模型筛选的关键因子依据偏差解释率大小依次为纬度(Lat)和150 m水层温度(T150)、50~100 m水温梯度(G50~100)、经度(Lon)和100~150 m水温梯度(G100~150),BRT模型筛选出的关键因子按贡献率大小依次为表层温度(T0)、0~50 m水温梯度(G0~50)、50 m水层温度(T50)、Lat和G50~100;渔汛旺期(8—11月),GAM模型筛选出的关键因子依据偏差解释率大小依次为Lat、Lon、T0G0~50G50~100,BRT模型筛选出的关键因子按贡献大小率依次为G0-50、Lon、T0、Lat和T50;两种模型比较显示,BRT模型在拟合优度方面优于GAM模型。研究表明,不同渔汛阶段西北太平洋柔鱼CPUE的关键影响因素有所不同,渔汛初期中上层水温对CPUE影响较大,而渔汛旺期浅水层水温对CPUE贡献较大。
  • 加载中
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出版历程
收稿日期:  2023-03-04

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