CAJ | 학술논문

柔鱼（ Ommastrephes bartramii）是中国远洋鱿钓渔业的重要经济种类之一。以2012年7月~10月柔鱼单位渔船日捕捞产量（ CPUE）作为渔场分布的指标，利用地统计学中全局多项式、局部多项式、径向基函数、反距离权重和普通克里格等5种插值方法对柔鱼渔场空间分布进行分析与比较。研究表明，普通克里格插值法结果为最优，其他依次为反距离权重插值法、径向基函数插值法、局部多项式插值法、全局多项式插值法；以普通克里格插值法，对7月~10月各月柔鱼CPUE进行预测，获得7月~10月柔鱼中心渔场随月份的迁移分布情况；与实际作业位置以及CPUE比较发现，各月实际和预测CPUE均值相差不大，各月CPUE预测值在0.51~1.95 t·d-1，误差控制在0.15 t·d-1以下。研究认为，普通克里格插值法在柔鱼中心渔场预报中具有较好的可靠性，同时结合海洋环境因子对柔鱼渔场分布变化进行了讨论。
유어（ Ommastrephes bartramii）시중국원양우조어업적중요경제충류지일。이2012년7월~10월유어단위어선일포로산량（ CPUE）작위어장분포적지표，이용지통계학중전국다항식、국부다항식、경향기함수、반거리권중화보통극리격등5충삽치방법대유어어장공간분포진행분석여비교。연구표명，보통극리격삽치법결과위최우，기타의차위반거리권중삽치법、경향기함수삽치법、국부다항식삽치법、전국다항식삽치법；이보통극리격삽치법，대7월~10월각월유어CPUE진행예측，획득7월~10월유어중심어장수월빈적천이분포정황；여실제작업위치이급CPUE비교발현，각월실제화예측CPUE균치상차불대，각월CPUE예측치재0.51~1.95 t·d-1，오차공제재0.15 t·d-1이하。연구인위，보통극리격삽치법재유어중심어장예보중구유교호적가고성，동시결합해양배경인자대유어어장분포변화진행료토론。
Ommastrephes bartramii is one of the most important economic species caught by Chinese squid jigging fleets. Based on the abundance index( CPUE,catch per day in one fishing vessel)of O. bartramii from July to October in 2012,we applied five statistical interpolation methods( global polynomial,local polynomial,radial basis function,inverse distance weighted and ordinary Kriging)to analyze the fishing ground of O. bartramii in the Northwest Pacific. The results show that ordinary Kriging was the best method for ana-lyzing CPUE distribution,followed by inverse distance weighted,radial basis function,global polynomial and local polynomial. The optimal method of ordinary kriging was considered as an example to predict the CPUE distribution from July to October,so as to obtain the change of monthly fishing ground distribution. Little difference was found between actual CPUE and predicted CPUE;the mean monthly CPUEs varied from 0. 51 t·d-1 to 1. 95 t·d-1 and their absolute errors were less than 0. 15 t·d-1 . Finally,we discussed the distribution of fishing ground and its variation by combining with marine environmental factors. It is indicated that ordinary Kriging in-terpolation method was suitable for forecasting the fishing ground of O. bartramii.