摘要
根据1998—2011年我国大型灯光围网渔船在东黄海捕捞日本鲐的生产数据,利用最短空间距离法对鲐其渔场重心进行聚类分析,对渔场重心的聚类结果,利用灰色关联度分析方法,分析海表温度(Sea Surface Temperature,SST)、海平面高度(Sea Surface Height,SSH)和叶绿素a质量浓度(ρChl-a)与渔场重心的关联程度。结果表明:环境因子对渔场重心的影响程度从高到低依次为SST、SSH、ρChl-a,环境因子与渔场重心在纬度上的关联性比经度密切。
Chub mackerel（Scomber japonicas）,an important economic pleagic species in the East China Sea and Yellow Sea,is targeted by large light purse seine fishery. Nearest neighbour method of cluster analysis was used to culster the gravity centres of fishing groud of large light purse seine fleets during 1998 to 2011. Morever, applied grey correlation approach was utilized to analyze the correlation degrees between the gravity of fishing groud and environmetal factors,i.e. sea surface temperature（SST）,sea surface height（SST） and sea surface chlorophyll a concentration（Chl-a）. The results indicatd that the environmetal factors greatly affcted the spatial-temporal distribution of the gravity of fishing ground,and the ability from high to low was SST,SSH,and Chl-a. Futhermore,the correlation degrees between environmental factors and latitude of gravity of fishing groundwas were higher than those between environmental factors and longitude of gravity of fishing ground.
出处
《广东海洋大学学报》
CAS
2016年第3期110-114,共5页
Journal of Guangdong Ocean University
基金
国家自然科学基金(NSFC41476129
NSFC41276156)
国家863计划(2012AA092303)
国家科技支撑计划(2013BAD13B01)
关键词
最短空间距离法
渔场重心
灰色关联分析
环境因子
日本鲐鲐鱼
nearest neighbour method of cluster analysis
gravity of fishing ground
grey correlation approach
environmetal factors
Scomber japonicas
