西白令海狭鳕渔场与环境因子关系研究  

Studies on Relationship between Environmental Factors and Fishing Grounds of Walleye Pollock (Theragra chalcogramma) in West Bering Sea

作　　者：徐香香 邹晓荣[1,2,3,4,5] 杨香帅 汪子安 XU Xiangxiang;ZOU Xiaorong;YANG Xiangshuai;WANG Zi-an(College of Marine Sciences,Shanghai Ocean University,Shanghai 201306 ,China;National Engineering Research Center for Oceanic Fisheries,Shanghai Ocean University,Shanghai 201306,China;Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources of Ministry of Education,Shanghai Ocean University,Shanghai 201306 ,China;Collaborative Innovation Center for National Distant-water Fisheries,Shanghai 201306 ,China;Scientific Observing and Experimental Station of Oceanic Fishery Resources,Ministry of Agriculture,Shanghai 201306 ,China)

机构地区：[1]上海海洋大学海洋科学学院,上海201306 [2]上海海洋大学国家远洋渔业工程技术研究中心,上海201306 [3]上海海洋大学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 [4]远洋渔业协同创新中心,上海201306 [5]农业部大洋渔业资源环境科学观测实验站,上海201306

出　　处：《海洋湖沼通报》2019年第4期115-124,共10页Transactions of Oceanology and Limnology

基　　金：上海市重点学科建设项目(S30702)资助

摘　　要：根据2013~2018年白令海海域拖网作业的狭鳕( Theragra chalcogramma)渔获数据以及环境数据,利用GAM模型对CPUE进行了标准化,建立了三个基于不同环境因子的剩余产量模型:(1)基于SST因子的剩余产量模型;(2)基于SST和Chl-a因子的剩余产量模型;(3)基于SST、Chl-a和SSHA因子的剩余产量模型,分析了环境因子对西白令海狭鳕资源的影响。研究表明:基于SST和Ch-a因子的剩余产量模型拟合程度最好,表达式为Cm=0. 9343f-0. 0003 fm^2+0.155Tmfm +0.325 4cam fm,狭鳕资源量的变动受捕捞努力量、渔场SST以及Chl-a控制。分析认为:SST是导致西白令海狭鳕CPUE产生月间波动的最重要的环境因子,Chl-a对狭鳕CPUE也有一定的影响,而SSHA的影响则相对较小。建议将SST以及Chl-a作为狭鳕渔场分析与渔情预报研究的重要环境因子。According to the fishery and environmental data of walleye pollock in the west Bering Sea from 2013 to 2018, we standardized CPUE with GAM model and developed three surplus production models for walleye Pollock in this study. The three surplus production models included (1) the surplus production model based on the SST;(2) the surplus production model based on the SST and Chl-a;and (3) the surplus production model based on the SST, Chl-a and SSHA. We analyzed also the impact of the environmental factors on the walleye pollock stock. The result indicated that the surplus production model based on the environmental factors SST and Chl-a is the best. It can be expressed as Cm-0. 934 3fm-0. 000 3fm^2+0. 155Tmfm +0. 3254Camfm. Variation of walleye pollock stock biomass is controlled mainly by fishing effort, SST and Chl-a in the fishing ground. SST is the most important environmental factor to the CPUE of walleye pollock in the Bering Sea. Chl-a also has a certain impact on the CPUE of walleye pollock. The impact of SSHA is relatively small. It is suggested that the environmental factors SST and Chl-a are important to the study on the fishery analysis and fishery forecasting research of walleye pollock.

关 键 词：狭鳕 环境因子 剩余产量模型 西白令海 

分 类 号：S931[农业科学—渔业资源]