摘要
根据1998～2002年我国主要渔业公司灯光围网船在东、黄海的生产统计资料,利用MarineExplorer4.0软件进行渔场分布绘制和年际比较,利用空间距离聚类法对南、北两大渔场的产量重心年际变化进行比较。结果表明,高产量渔场主要集中在南部的26°～28°N、122°～124°E和北部的32°～38°N、123°～125°E海域。年际间渔场分布及其产量重心有所变动,北部渔场分布范围较大。渔场产量重心分布变化与海洋环境条件存在明显的关系,1998年6～7月由于沿岸冲淡水势力较强,造成了7月份围网渔场产量重心明显向东偏移。
Based on the catch statistics from the main fishery corporations of light purse seine fishery in the East China Sea and the Yellow Sea from 1998 to 2002, the distribution description and the inter-annual comparison of the fishing grounds of Pnunmatophorus japonicus and Decapterus maruadsi are made by the software Marine Explorer, and the inter-annual weight position changes of the yields for the northern and southern fishing grounds are compared by using the spatial distance cluster method. The result shows that the fishing ground with high catch was focused at 26°～28°N and 122°～124°E for the southern region, and 32°～38°N and 123°～125°E for the northern region respectively. The inter-annual distribution of fishing ground and its weight positions are different by the year. Moreover, the distribution area for the northern fishing ground is wider than that for the southern fishing ground. The change of fishing ground distribution is obviously related with marine environmental factors. In 1998, the strength of the coastal diluted water was so strong during June and July that the weight position of fishing ground moved eastward in July.
出处
《海洋学研究》
北大核心
2005年第2期41-49,共9页
Journal of Marine Sciences
基金
上海市启明星计划基金资助项目(02QC14040)
农业部948资助项目(2001-476)
关键词
渔场产量重心
渔场分布
鲐鲹鱼
空间距离聚类法
东、黄海
weight position of fishing ground
distribution of fishing ground
Pnunmatophorus japonicus and Decapterus maruadsi
spatial distance cluster method
the Yellow Sea and the East China Sea
