东太平洋长鳍金枪鱼栖息地指数模型的比较Comparison of Thunnus alalunga in the Eastern Pacific Based on Habitat Suitability Index Model
王震,陈新军,雷林
摘要(Abstract)：
根据2009–2011年东太平洋海域长鳍金枪鱼延绳钓的生产数据,结合海洋遥感获得的表温(SST)和海面高度(SSH)的数据,采用外包络法,以投钩数、单位捕捞努力量渔获量(CPUE)为适应性指数,按月份分别建立基于SST和SSH的长鳍金枪鱼栖息地适应性指数(SI)。采用算术平均法(AMM)和几何平均法(GMM)获得基于SST和SSH环境因子的栖息地指数(HSI)综合模型,并以2012年各月生产数据进行模型验证。结果表明,基于两种HSI模型所得的长鳍金枪鱼栖息地综合指数不相同,通过算术平均法的HSI模型,当HSI为0.6以上时,渔获量占总渔获量的87.9%,通过几何平均法的HSI模型,当HSI为0.6以上时,渔获量所占比例为87.2%。算术平均法较GMM更适于东太平洋长鳍金枪鱼栖息地指数模型。
关键词(KeyWords)： 长鳍金枪鱼;栖息地指数模型;适应性指数;外包络法
基金项目(Foundation): 海洋局公益性行业专项(20155014);; 上海市科技创新行动计划(5DZ1202200);; 海洋二号卫星地面应用系统项目(HY2A-HT-YWY-006)
作者(Author): 王震,陈新军,雷林
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