首页 >  上海海洋大学学报 >  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

2022, 31(3): 821-830. doi: 10.12024/jsou.20210903560

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

1. 上海海洋大学 海洋科学学院, 上海 201306;

2. 农业农村部渔业渔政管理局, 北京 100125;

3. 大洋渔业资源可持续开发教育部重点实验室, 上海 201306;

4. 国家远洋渔业工程技术研究中心, 上海 201306;

5. 农业农村部大洋渔业开发重点实验室, 上海 201306;

6. 农业农村部大洋渔业资源环境科学观测实验站, 上海 201306

通讯作者: 方舟, zfang@shou.edu.cn

收稿日期:2021-09-14
修回日期:2021-12-17

基金项目:   国家重点研发计划(2019YFD0901401);农业农村部全球渔业资源调查监测专项(2021年度) 

关键词: 西印度洋 , 捕捞国家和地区 , 渔获量 , 远洋渔业 , 优势分析

Preliminary analysis of catch differences among fishing countries and regions in the Western Indian Ocean based on dominance analysis

1. College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China;

2. Fisheries Bureau, Ministry of Agriculture and Rural Affairs, Beijing 100125, China;

3. Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, Shanghai 201306, China;

4. National Engineering Research Center for Oceanic Fisheries, Shanghai 201306, China;

5. Key Laboratory of Oceanic Fisheries Exploration, Ministry of Agriculture and Rural Affairs, Shanghai 201306, China;

6. Scientific Observing and Experimental Station of Oceanic Fishery Resources, Ministry of Agriculture and Rural Affairs, Shanghai 201306, China

Corresponding author: FANG Zhou, zfang@shou.edu.cn

Received Date:2021-09-14
Accepted Date:2021-12-17

Keywords: Western Indian Ocean , fishing nations and areas , catch , distant-water fisheries , dominance analysis

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。根据FAO提供的1950—2019年西印度洋海域渔获量统计数据,采用优势分析法(dominance analysis)分析了70年间主要捕捞方的渔获种类组成和渔获量,比较不同时间序列下主要捕捞方和捕捞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3个阶段。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,长头小沙丁鱼(Sardinella longiceps)累计渔获量最高,鲣(Katsuwonus pelamis)、黄鳍金枪鱼(Thunnus albacores)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。

The West Indian Ocean is an important area of marine fishing, and the analysis of the species composition and catch of fishing countries and regions provides the basis for evaluating the utilization status of fishery resources, and 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, and 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. The cumulative catch of Sardinella longiceps was the highest, and the contribution rate of skipjack and Yellowfin tuna to total catch was relatively high. India, Pakistan and Iran had the highest amount of catch in all stages in the coastal states and regions, while Spain, France, Japan and Taiwan Province were 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, and increase the exploitation of short life cycle species with rich resources, in order to ensure the sustainable use of fishery resources in the Western Indian Ocean.

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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