海洋科学2016，Vol.40Issue(3)：146-153,8.DOI:10.11759/hykx20140217002
基于船位监控系统的拖网捕捞努力量提取方法研究
Method of extracting trawling effort based on vessel moni-toring system
摘要
Abstract
The purpose of this study was to extract trawling effort from the statistics of a vessel monitoring system. Using speed data, the results show that there are three peaks in trawling effort. The second peak is in the fishing state, and generally occurs at speeds between 1 m/s to 2.1 m/s. The heading difference is between -50 and 50 de-grees. Trawlers have three states, including low speed, fishing, and sailing, which can be distinguished by their thresholds of speed and heading differences. We extracted a total of 318 433 fishing-state points from 1 423 fishing vessels, and the total trawling time was 15 921 h. We used an inverse distance weighting interpolation method to generate change trends in the fishing intensity distribution. Fishing effort is an important reference value in fishery resource research. Compared with traditional fishing effort calculations, this method is characterized by real-time, large-scale, rapid, and high resolution. The results are applicable in the conservation of fisheries resources.关键词
北斗卫星/船位监控系统/捕捞努力量/航向/航速Key words
Beidou satellite/vessel monitoring system/fishing effort/heading/speed分类
农业科技引用本文复制引用
张胜茂,张衡,唐峰华,樊伟,黄华文..基于船位监控系统的拖网捕捞努力量提取方法研究[J].海洋科学,2016,40(3):146-153,8.基金项目
中央级公益性科研院所基本科研业务费专项资金项目(东海水产研究所2014T13) （东海水产研究所2014T13）
十二五国家科技支撑计划项目(2013BAD13B01) （2013BAD13B01）
上海市科学技术委员会资助项目(12511501200)@@@@Fundamental Research Funds in Central Public-interest Sci-entific Institution, No. ECSFRI2014T13 （12511501200）
Twelfth Five-year Scientific and Technological Support Project, No.2013BAD13B01 （）
Shanghai Municipal Science and Technology Commission, No.12511501200 （）
