摘要
长鳍金枪鱼作为高度洄游的大洋性鱼类,因其经济价值高、资源量丰富而成为世界海洋渔业的主要捕捞对象之一。根据2006-2010年南太平洋长鳍金枪鱼的生产数据,结合叶绿素-a浓度、海洋表面温度和海洋表面盐度资料,运用一元非线性回归方法,按月份建立基于各环境因子的长鳍金枪鱼栖息地适应性指数,采用算数平均法获得基于多海洋环境因子的综合栖息地适应性指数模型,并以此来预报中心渔场。利用2011年生产数据及海洋环境资料对栖息地指数模型进行验证。研究表明:中心渔场主要分布在HSI大于0.6的海域,预报准确率接近70%。因此,基于叶绿素-a浓度、表层温度和表层盐度的综合栖息地模型能较好的预测南太平洋长鳍金枪鱼中心渔场。
As a highly migratory species with great economic value and abundant resources,albacore Thunnus alalunga had been become one of the main target species in the world＇s ocean fisheries.Based on the production data from Western and Central Pacific Fisheries Commission,and the environment data including chlorophyll-a concentration,sea surface temperature and sea surface salinity,the habitat suitability index of T.alalunga of each environment factors were established in each month by using a linear regression,and the composite habitat suitability index model was obtained by using an arithmetic mean model（AMM）.The habitat suitability index model was also verified based on the production data and environmental data in 2011.The results showed that the actual fishing grounds were mainly distributed in higher HIS with more than 0.6.The accuracy rate for fishing ground nearly approached70%.It is concluded that the established habitat suitability index model can better predict the central fishing ground of T.alalunga based on chlorophyll-a concentration,sea surface temperature and sea surface salinity in the South Pacific Ocean.
出处
《海洋湖沼通报》
CSCD
北大核心
2015年第2期36-44,共9页
Transactions of Oceanology and Limnology
基金
国家高新技术研究发展计划项目(2012AA092303)
国家发改委产业化专项(2159999)
上海市科技创新行动计划(12231203900)资助
关键词
南太平洋
长鳍金枪鱼
栖息地模型
渔场预报
South Pacific Ocean
Thunnus alalunga
habitat suitability index
forecasting fishing ground
