| 基于优势分析法的西印度洋捕捞国和地区渔获量差异初步分析 |
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| 引用本文： | 鲁泉,李楠,方舟,张忠.基于优势分析法的西印度洋捕捞国和地区渔获量差异初步分析[J].上海海洋大学学报,2022,31(3):821-830. |
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| 作者姓名： | 鲁泉 李楠 方舟 张忠 |
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| 作者单位： | 上海海洋大学海洋科学学院,上海海洋大学海洋科学学院,上海海洋大学海洋科学学院,上海海洋大学海洋科学学院,上海海洋大学海洋科学学院 |
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| 基金项目： | 全球重要鱼种资源监测评估项目资助 |
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| 摘 要： | 西印度洋是海洋捕捞作业的重要海域,分析捕捞方渔获种类组成和渔获量是评价渔业资源利用状态的基础,也是确保其资源可持续开发和科学管理的重要支撑。本研究根据FAO提供的1950-2019年西印度洋海域渔获量数据,采用优势分析(Dominance analysis),分析了70年间主要捕捞方渔获种类和渔获量组成,比较不同时间序列下主要捕捞方和种类对渔获量的贡献率。研究表明,西印度洋海域渔获量整体呈上升趋势,根据突变点检测及渔获量增长趋势可划分为1950-1982年、1983-2005年和2006-2019年三个阶段。研究分析表明,各阶段累计渔获量前十的渔获种类、捕捞方不存在显著性差异(P<0.05)长头小沙丁鱼(Sardinella longiceps)累计渔获量为最高,鲣、黄鳍金枪鱼等种类渔获量对总渔获量的贡献度较高；印度、巴基斯坦和伊朗等是沿海国和地区各阶段渔获量最高的捕捞方,西班牙、法国、日本和中国台湾省等是非沿海国和地区渔获量最高的捕捞方,对各阶段印度洋西部海域总渔获量的贡献度基本都超过10%。。研究认为,基于印度洋西部海域渔业资源开发现状及其潜力,各主要捕捞国家和地区应该降低捕捞努力量,养护已过度开发的经济种类,增加对资源量丰富的短生命周期种类的开发力度,确保印度洋西部海域渔业资源可持续利用。
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| 关 键 词： | 优势分析 西印度洋 捕捞国家和地区 渔获量 远洋渔业 |
| 收稿时间： | 2021/9/14 0:00:00 |
| 修稿时间： | 2021/12/17 0:00:00 |
Preliminary analysis of catch differences among fishing countries and regions in the Western Indian Ocean based on dominance analysis |
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| LU Quan,LI Nan,FANG Zhou,ZHANG Zhong.Preliminary analysis of catch differences among fishing countries and regions in the Western Indian Ocean based on dominance analysis[J].Journal of Shanghai Ocean University,2022,31(3):821-830. |
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| Authors: | LU Quan LI Nan FANG Zhou ZHANG Zhong |
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| Institution: | College of Marine Sciences of Shanghai Ocean University Shanghai,College of Marine Sciences of Shanghai Ocean University Shanghai,College of Marine Sciences of Shanghai Ocean University Shanghai,College of Marine Sciences of Shanghai Ocean University Shanghai,College of Marine Sciences of Shanghai Ocean University Shanghai |
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| Abstract: | The West Indian Ocean is an important area of marine fishing fisheries, and the analysis of the species composition and catch amount of fishing countries and regions is the basis for evaluating the utilization status of fishery resources, and is also an important support for ensuring the sustainable development and scientific management of fishery resources. Based on the catch data of the western Indian Ocean from 1950 to 2019 provided by FAO, the species and catch composition of the main fishing parties in the past 70 years were analyzed by using dominance analysis, the contribution rates of main fishing parties and species to total catch were compared under different time series. The results showed that the total catch in the western Indian Ocean was on the rise, which could be divided into three periods: 1950-1982,1983-2005 and 2006-2019. The results showed that there was no significant difference among the first 10 species and fishing parties in the cumulative catch of each stage (P >0.05), the cumulative catch of Sardinella longiceps was the highest, the contribution rate of skipjack and Yellowfin tuna to total catch was relatively high. India, Pakistan and Iran were the highest in all stages of catch in the coastal states and regions, while Spain, France, Japan and Taiwan Province are the non-coastal countries and regions with the highest catch, which contributed to more than 10% to the total catch in the western Indian Ocean at each stage . The research suggests that, based on the current status and potential of fishery resources exploitation in the western Indian Ocean, the major fishing countries and regions should reduce their fishing effort and conserve the over-exploited economic species, increase the exploitation of short life cycle species with rich resources to ensure the sustainable use of fishery resources in the western Indian Ocean. |
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| Keywords: | Dominance analysis Western Indian Ocean fishing nations and areas catch distant-water fisheries |
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