黄海鳀鱼时空分布季节差异分析

生态学杂志

黄海鳀鱼时空分布季节差异分析

牛明香^1,2**,王俊¹,袁伟¹,朱建成¹,戴芳群^1

（¹农业部海洋渔业可持续发展重点实验室，山东省渔业资源与生态环境重点实验室，中国水产科学研究院黄海水产研究所, 山东青岛 266071； ²山东农业大学资源与环境学院，山东泰安 271018）

出版日期:2013-01-10 发布日期:2013-01-10

Seasonal dissimilarity of Engraulis japonicus spatiotemporal distribution in Yellow Sea.

NIU Ming-xiang^1,2**, WANG Jun¹, YUAN Wei¹, ZHU Jian-cheng¹, DAI Fang-qun¹

(¹Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, China, Key Laboratory for Fishery Resources and Ecoenvironment, Shandong Province (FRES), Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, Shandong, China; ²College of Resources and Environment, Shandong Agricultural University, Taian 271018, Shandong, China)

Online:2013-01-10 Published:2013-01-10

摘要/Abstract

摘要： 利用1986—2010年的底拖网调查数据，基于GIS的空间分析和地统计分析技术，从不同角度阐明在捕捞压力和气候变化的双重胁迫下，黄海鳀鱼资源密度时空分布及其变动的季节差异。结果表明：不同季节鳀鱼空间分布趋势变化明显，冬季，资源密度从调查区域东北部向岸边和南部水域递减，春季，与冬季相反，资源密度由岸边向东部水域递减，夏季，整体上资源密度呈北高南低的趋势，但高值点散乱分布，秋季，与冬季相似，资源密度由东部水域向岸边环形递减，但变化梯度较冬季缓和；鳀鱼资源密度重心季节变化明显，但不同年代变化规律并不相同；1986—2010年，春、夏和秋3个季节，鳀鱼资源密度重心均向北移动，冬季，资源密度重心年间变化明显，但无整体迁移规律；不同季节，鳀鱼资源密度高值聚集区空间分布位置不同。

Abstract: Based on the bottom trawl survey data in 1986-2010, and by using the techniques of GIS spatial analysis and geostatistics, this paper studied the spatiotemporal distribution and its seasonal dissimilarity of anchovy (Engraulis japonicus) stock density in Yellow Sea under the double stress of fishing pressure and climate change. There existed obvious variations in the spatial distribution of the anchovy in different seasons. In winter, the stock density of the anchovy decreased gradually from the north-eastern waters to the shore and southern waters; in spring, the stock density decreased gradually from the shore to the eastern waters; in summer, the stock density had a trend of decreased from the northern waters to the southern waters, but the high value points scattered; in autumn, similar to that in winter, the stock density decreased from the eastern waters to the shore, but the variation gradient was smaller than that in winter. The stock density center of the anchovy had an obvious seasonal variation, but the variation pattern differed with years. From 1986 to 2010, the stock density center of the anchovy moved northward in spring, summer and autumn, and had an obvious yearly transformation but no overall migration trend in winter. In different seasons, the aggregation areas of the anchovy’s high stock density differed spatially.

牛明香1,2**,王俊1,袁伟1,朱建成1,戴芳群1. 黄海鳀鱼时空分布季节差异分析[J]. 生态学杂志.

NIU Ming-xiang1,2**, WANG Jun1, YUAN Wei1, ZHU Jian-cheng1, DAI Fang-qun1. Seasonal dissimilarity of Engraulis japonicus spatiotemporal distribution in Yellow Sea.[J]. cje.