单 位：
上海海洋大学大洋渔业资源可持续开发教育部重点实验室;上海海洋大学国家远洋渔业工程技术研究中心;上海海洋大学海洋科学学院
关键词：
智利竹鱼;栖息地适应性指数;海洋环境因子;外包络法;基于权重的算术平均法
摘 要：
根据2003—2009年5—9月我国大型拖网渔船捕捞智利竹鱼的生产统计数据,结合海表面温度(SST)和海表面高度(SSH)的海洋环境因子,以作业网次和单位捕捞努力量渔获量(CPUE)作为适应性指数(SI),采用外包络法分别建立SST、SSH的SI,采用算术平均法(AMM)、几何平均法(GMM)、基于权重的AMM分别建立栖息地指数(HSI),并用2010—2011年度生产捕捞数据进行比较与验证。结果显示,以作业网次为基础的SI为最适;AMM优于GMM;考虑到权重的AMM优于没有考虑权重的AMM,5—9月最适HSI模型的SST权重分别为0.4、0.7、0.6、0.7、0.1,2010—2011年渔获量和作业网次的验证预报精度分别为75%~93%、80%~90%,可作为秋冬季智利竹鱼栖息地指数模型。研究表明,不同月份的SST和SSH对秋冬季智利竹鱼渔场分布有着不同的影响。秋冬季是智利竹鱼的主要渔汛期,本研究为准确建立其渔场预报模型奠定了基础。
译 名：
A comparative study on habitat suitability index of Trachurus murphyi during autumn and winter
作 者：
JIANG Rui;CHEN Xinjun;LEI Lin;WANG Jintao;College of Marine Sciences, Shanghai Ocean University;National Engineering Research Center for Oceanic Fisheries, Shanghai Ocean University;Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education,Shanghai Ocean University;
关键词：
Trachurus murphyi;;habitat suitability index;;oceanic environmental data;;external enveloped method;;arithmetic weighted mean model
摘 要：
The seasons of autumn and winter are the main fishing time of Trachurus murphyi. It has practical meaning to establish the forecasting model of fishing grounds for T. murphyi. In this paper, we established the habitat suitability index of T. murphyi during autumn and winter based on Chinese commercial fishing data of T.murphyi in Southeast Pacific during May to September from 2003 to 2009 and combined with oceanic environmental data including sea surface temperature(SST) and sea surface height(SSH). The fishing effort and CPUE are considered as the indicator of suitability index(SI), and the curves of SI were estimated by using the method of Data Envelopment Analysis. And the Arithmetic Mean Model(AMM), Geometric Mean Model(GMM)and the weighted AMM are used to establish the integrated habitat suitability index(HSI). The fishery data in 2010 and 2011 are used to compare and test the HSI model. The results indicated that the SI curve based on fishing effort is better than that based on CPUE, and the AMM is better than that the GMM. The weighted AMM is also more suitable than the general AMM, and the monthly suitable weight of SST during May to September is 0.4, 0.7,0.5, 0.7 and 0.1, respectively. In 2010 and 2011, in the fishing areas with greater than 0.6 of HIS, the percentages of catch and fishing effort attained 75%-93% and 80%-90% respectively. It is concluded that the habitat suitability index during May to September based on fishing efforts by using external envelope method with monthly weights of SST could be used to predict the fishing ground of T. murphyi. In different months, SST and SSH have different effects on fishing ground of T. murphyi during autumn and winter.
