The derived GAM was used to quantify the effects of temporal, spatial, environmental, and fisheries operational variables on the Chub mackerel catch rates and to derive standardized CPUE.

• 最后，利用最优的GAM模型对CPUE标准化，并定量分析时间、空间、环境以及捕捞渔船参数对鲐鱼CPUE的影响。