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- Title
阿拉伯海域围网渔场时空分布及其与海表环境因子的关系.
- Authors
杨胜龙; 范秀梅; 张忭忭ꎬ; 张 衡; 张胜茂; 崔雪森; 樊 伟
- Abstract
In order to understand the impact of surface environmental factors in the Arabian sea on seine fisheries, this paper used the production data of China’s Indian Ocean towing seine net during 2016-2017 and data of sea surface temperature ( SST), sea surface chlorophyll-a concentration ( Chl a), sea surface current ( SSC) and sea surface height ( SSH)) during the same period to analyze statistically the changes of seine net operation center of gravity and relationship between seine net CPUE and surface environmental factors; and also used frequency analysis and empirical cumulative distribution function ( ECDF) to calculate the most suitable marine environment interval. The results showed that: The surface environment, purse seine operations and centre of gravity of fishing grounds in the Arabian sea were significantly affected by the Indian Ocean monsoon. Seine net fishery fishing season was mainly during the northeast monsoon period. The fishery gravity center moved in the same direction as the surface monsoon.In winter monsoon, the SST of the fishing ground showed a small fluctuation trend from high to low and then high. The CPUE location moved along with Chl a high concentration value area north-south shrink, and presented a characteristic with north-south moving longitude direction. CPUE located at the right side of sea area with larger flow rate distributed at the west border, presenting in the central region between the highest and lowest values of SSC.During the northeast monsoon period, the optimum SST was 25.5 ~ 28℃, Chl a concentration was 0.2 ~ 0.5 mg/m3, SSC was 0.05 ~ 0.25 m/s, and SSH was 0.20 ~ 0.35 m, respectively
- Publication
Journal of Agricultural Science & Technology (1008-0864), 2019, Vol 21, Issue 9, p149
- ISSN
1008-0864
- Publication type
Article
- DOI
10.13304/j.nykjdb.2018.0615