摘要
单拖作业是福建省闽中地区重要的作业渔具之一。在捕捞生产过程中渔具受到诸多因素的影响,各种因素对渔具捕捞能力的影响程度不同,给捕捞力量的量化计算和管理带来困难。为了了解各因子对单拖作业捕捞能力发挥的影响程度,本文选择影响单拖捕捞能力发挥的12个因子指标,采用因子分析法对其进行分析。结果表明,可将影响单拖捕捞能力发挥的诸多因素归并为网具结构、渔船作业能力、船龄、渔民捕捞技能4个公共因子,它们在单拖捕捞过程中所做的贡献率依次为网具结构52.87%,渔船作业能力24.46%,船龄7.05%,捕捞技能4.73%。本文还计算和讨论了各样品船的因子得分,通过各因子的得分和综合得分,可对各样品船的捕捞能力发挥情况进行综合评价,为渔业生产和管理提供参考。
Otter trawl is one of the most important fishing gears in the Middle Fujian Region. A good many factors could affect the utilization of fishing gears in the process of fishing operation in varying degrees, bringing much trouble in both estimating the fishing capacity and the management of fishing effort. In order to understand the effect degrees produced by different factors on the fishing capacity of otter trawl, we employed 12 factors in factor analysis. According to the analysis result, all the 12 variables could merge into 4 kinds of common factors, namely, the net structure, the vessel fishing capacity, the vessel age and the fishing skills of fisherman. Their contribution rates to the fishing capacity of otter trawl were 52. 87 %, 24.46 %, 7.05 % and 4.7a %, successively. In addition, this paper also calculated the factor scores for each sample vessel. According to the individual factor scores and the synthetic scores, we evaluated synthetically the fishing capacity for each vessel, thus providing reference for fishery production and management.
出处
《海洋水产研究》
CSCD
北大核心
2007年第1期19-25,共7页
Marine Fisheries Research
基金
福建省海洋与渔业局渔业处项目(福建省拖网
张网作业主要经济渔获监测分析)资助
关键词
单拖作业
捕捞能力
因子分析
综合评价
Otter trawl
Fishing capacity
Factor analysis
Synthetic evaluation
