渔场重心信度测算及渔场重心修正理论构建——以闽南-台湾浅滩渔场二长棘鲷为例  

The theoretical construction of measuring fishing ground gravity reliability and correcting fishing ground gravity: a case study on Paerargyrops edita Tanaka in Minnan-Taiwan Bank Fishing Ground

作　　者：蔡建堤[1] 陈方平[2] 吴建绍[1] 刘勇[1] 沈长春[1] 马超[1] 吴立峰[1] 

机构地区：[1]福建省水产研究所,厦门361013 [2]厦门海洋职业技术学院,厦门361102

出　　处：《生态学报》2015年第6期1929-1937,共9页Acta Ecologica Sinica

基　　金：福建省科技厅省属公益类科研院所基本科研专项(2012R1101-1);福建省科技厅省属公益类科研院所基本科研专项"种群分布格局在渔业资源的开发与应用研究"

摘　　要：渔场重心是表征渔场位置的重要参数,准确掌握渔场重心,对判断鱼类洄游路线、确定中心渔场、表征鱼群分布特征和变化规律具有重要意义。渔场重心计算采用的是固定物体重心计算方法,然而运动的鱼类和固定物体有着本质的区别。因此,由固定物体重心计算的渔场重心能否体现鱼群分布特征,值得深入研究。渔场重心信度是用于度量由固定物体重心计算的渔场重心表征鱼群分布特征的能力,体现渔场重心的可信程度,而渔场重心修正是为了提升渔场重心表征鱼群分布特征的能力,提高渔场重心信度,以准确掌握渔场重心。以闽南-台湾浅滩渔场二长棘鲷(Parargrops edita Tanaka)为例,采用渔场重心、几何中心和单位捕捞努力量渔获量(Catch Per Unit Effort,CPUE)为参数,首次建立了渔场重心信度测算及渔场重心修正理论和方法,分析了渔场重心信度,研究了渔场重心修正方法和渔场重心的分布特征,旨在从更精细地水平上掌握二长棘鲷渔场重心,为生态智慧在渔业资源开发和管理的应用提供可靠的数据支持。结果表明:(1)二长棘鲷渔场重心信度各月变化在0.12—1.00,平均值0.67,均方差0.31,各月渔场重心可信度波动较大,12月份和2月份渔场重心信度最大为1.00,鱼群对称和均匀分布于渔场重心,渔场重心可信度最高,3—8月份渔场重心信度低于0.70,鱼群在渔场重心周围的对称性和均匀度差,渔场重心可信度差,其中3月份渔场重心信度最小为0.12;(2)渔场重心信度不仅反映了渔场重心可信程度,还体现了鱼群在渔场重心周围的分布特征,可作为研究鱼群分布特征的重要参数,渔场重心信度低于0.70,渔场重心需要修正;(3)渔区修正系数用于判别鱼群所在渔区是否排除,通过去除渔区修正系数小于0.5的鱼群,能保留85%以上的鱼群数量,提高渔场重心信度0.70以上;(4)修改后的渔场重心变化规律较�The fishing ground gravity is one of the important parameters to indicate the position of fisheries. Accurate grasp is significant to judge fish migration route,determine the center of fishing ground,and indicate the fish distribution characteristics and variation rule. Fishing ground gravity calculated by the fixed object gravity cannot accurately reflect the fish distribution due to essential difference between the movement of the fish and fixed object the distinction,which deserves further investigation. Fisheries center reliability is used to measure the capacity of fishery gravity in fish distribution.Calculating the symmetry and uniformity of fish in fishing ground gravity reflects the reliability degree of fishing ground gravity. The fishing ground gravity correction is used to enhance the capacity of fishery gravity in accurately characterizing the fish distribution. This study analyzed Paerargyrops edita Tanaka in Minnan-Taiwan Bank Fishing Ground based on the parameters of the fishing ground gravity,geometry center and catch per unit effort（ CPUE）. The method of fisheries center reliability calculation and correction theory were established to analyze the distribution pattern of the fishing ground gravity of Paerargyrops edita Tanaka, which provides reliable data for ecological wisdom＇ s application in fishery resources development and management. We observed that the average fishing ground gravity reliability of Paerargyrops edita Tanaka was 0. 67 with the range from 0. 12 to 1. 00,and the mean square error was 0. 31,suggesting that the fishing ground gravity reliability is good,but volatile in months. The fishing ground gravity reliability was 1. 00 in February and December. The fishing ground gravity reliability with symmetrical and uniform fish distribution had the highest credibility and vice versa.The fishing ground gravity reliability was below 0. 70 from March to August,and it was 0. 12 in March. The fishing ground gravity reliability is an important parameter of fish distribution that not

关 键 词：渔场重心信度 渔场重心修正 渔场重心 渔场几何中心 二长棘鲷 闽南-台湾浅滩渔场 

分 类 号：S965.231[农业科学—水产养殖]