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茎柔鱼是短生命周期种类,其资源量极易受到海洋环境变化的影响。根据2003-2010年我国鱿钓船队在东南太平洋公海的生产统计和海洋表面温度(SST)、Nino 1+2 SSTA等资料,利用灰色关联度方法,分析了茎柔鱼作业渔场和产卵场最适表层水温范围占总面积的比例(分别用PF和PS来表示),以及它们与Nino 1+2SSTA的关系,进而探讨了PF和PS与单位捕捞努力量渔获量(CPUE)的关系,研究海洋环境变化对茎柔鱼资源补充量(用CPUE来表示)的影响。结果表明,2003-2010年PF和PS比值最大的分别集中在9-11月和12月-翌年1月。PS与Nino 1+2 SSTA的灰色关联度要高于PF与Nino 1+2 SSTA的值,由此推测厄尔尼诺等事件对PS的影响较为显著。同时,分析结果表明PS与CPUE的灰色关联度较高,在时间上呈现连续性,11月至翌年2月均在0.4左右。研究认为,拉尼娜事件会增大作业渔场最适表层水温面积比例,并形成广泛的上升流,从而有利于茎柔鱼索饵与生长,也利于茎柔鱼资源补充量的增加;反之则不利于茎柔鱼资源补充量的发生。
Spermophilus is a short life cycle species, its resources are highly vulnerable to changes in the marine environment. According to the production statistics, ocean surface temperature (SST), Nino 1 + 2 SSTA and other data of the squid fishing fleet in the southeast Pacific Ocean from 2003 to 2010, the gray relational grade method was used to analyze the fishing grounds and spawning grounds The relationship between the optimum surface water temperature and the total area (expressed as PF and PS, respectively) and their relationship with Nino 1 + 2SSTA, and then the relationship between PF and PS and unit catch effort catches (CPUE) To study the effects of changes in the marine environment on Scurry resource replenishment (expressed as CPUE). The results show that the largest PF and PS ratio in 2003-2010 are concentrated in September-November and December-January of the following year. The gray relational degree between PS and Nino 1 + 2 SSTA is higher than that between PF and Nino 1 + 2 SSTA. Therefore, it is speculated that the impact of El Niño and other events on PS is significant. At the same time, the analysis results show that PS and CPUE have a high degree of gray correlation and show continuity in time, all around 0.4 in November and the following February. The study suggests that the La Nina event will increase the proportion of the optimum surface water temperature and temperature of the fishing grounds and form a wide range of upward flow so as to be conducive to the growth and sowing of Squidfish, Spermophilus resource replenishment occurred.