印度洋西北海域鸢乌贼9-10月栖息地适宜指数研究  

Analysis on Habitat Suitability Index of Sthenoteuthis oualaniensis in Northwestern Indian Ocean from September to October

作　　者：余为[1] 陈新军[1,2,3] 

机构地区：[1]上海海洋大学海洋科学学院,上海201306 [2]大洋生物资源开发和利用上海市高校重点实验室,上海201306 [3]大洋渔业资源可持续开发省部共建教育部重点实验室,上海201306

出　　处：《广东海洋大学学报》2012年第6期74-80,共7页Journal of Guangdong Ocean University

基　　金：国家863计划(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

摘　　要：印度洋西北部海域的鸢乌贼(Sthenoteuthis oualaniensis)具有一定的开发潜力,可作为商业性捕捞的对象,准确预报中心渔场可为指导生产提供依据。根据2003、2004年9～10月份期间我国鱿钓船在2°～24°N、57°～69°E海域的探捕数据,结合表温、盐度、海表面高度和叶绿素a,以CPUE作为适应性指数,利用算术平均法(AM)和几何平均法(GM)分别建立基于环境因子的综合栖息地指数模型。结果表明,9月份在栖息地指数(HSI)大于0.8的中心渔场作业次数比例超过24%,平均日产量在5.48 t/d左右;10月份在HSI大于0.8的中心渔场作业次数比例在43%以上,平均日产量在5.2 t/d以上。基于表温、盐度、海表面高度和叶绿素a的HSI模型能较好预测印度洋鸢乌贼中心渔场,且AM模型优于GM模型。Sthenoteuthis oualaniensis with a potential development in the northwestern waters of the Indian Ocean can be used as the object of commercial fishing. The accurate forecasting of fishing ground can provide scientific guidance for fishing activities. According to the Chinese squid exploratory fishing data from September to October in 2003 and 2004 in the waters of 57°E-69°E, combined with sea surface temperature （SST）, sea surface salinity （SSS）, sea surface height（SSH） and Chl-a, and the CPUE as the suitability index（SI）, the integrated habitat suitability index （HSI） is established based on environmental factors by using arithmetic mean model （AM） and geometric mean model （GM） accordingly. The results indicate that the main fishing ground is distributed in the waters with HSI more than 0.8 in September, and its percentage of fishing times reached more than 24 percent and the average CPUE were about 5.48 t/d. In October the main fishing ground is distributed in the waters with HSI more than 0.8, and its percentage of fishing times reached more than 43 percent and the average CPUE were more than 5.2 t/d. The study suggests that the HSI model based on SST, SSS, SSH and Chl-a can better predict the fishing ground ofSthenoteuthis oualaniensis in the Indian Ocean, and the AM model is better than the GM model.

关 键 词：鸢乌贼 栖息地模型 环境因子 渔场 印度洋 

分 类 号：S934[农业科学—渔业资源]