摘要
为了分析浙江省几种重要底层渔业生物产量的变动趋势与环境因子变动规律之间的关系,基于收集得到的2000年到2014年浙江省小黄鱼(Larimichthys polyactis)、带鱼(Trichiurus lepturus)、乌贼、贝类等水产生物的渔获量的数据,以及捕捞努力量和各类环境因子(赤潮面积、距海平面高度、海表面温度、海表面盐度、厄尔尼诺指数、捕捞努力量6个因子),使用广义加性模型(GAM)对以上各类因子对上述水产生物渔获量变动可能产生的影响进行了分析。结果显示,赤潮面积、厄尔尼诺指数、捕捞努力量对小黄鱼渔获量波动影响显著(P<0.05),捕捞努力量、海表面盐度、厄尔尼诺指数、距海平面高度对带鱼渔获量变动影响显著(P<0.05),捕捞努力量、海表面温度、厄尔尼诺指数对乌贼渔获量变动影响显著(P<0.05),捕捞努力量、厄尔尼诺指数对贝类渔获量波动影响显著(P<0.05)。研究结果表明底层渔业生物波动是捕捞作用与环境因子综合作用的结果。研究结果能为浙江省渔业资源合理开发与管理提供参考依据,并为日后调控海洋渔业资源的平衡和可持续发展提供一定的参考依据。
The relationship between the change trend of several important bottom fish species biomass yield in Zhejiang Province and the change law of environmental factors was analyzed using the catch data of these fish species such as Larimichthys polyactis,Trichiurus lepturus,Squid and shellfish collected from 2000 to 2014 and the associating data of fishing effort and various environmental factors,totally 6 including red tide area,height from sea level,sea surface temperature,sea surface salinity,El Ni1 o index and fishing effort,and generalized additive model(GAM).The results showed that red tide area,El Ni1 o index and fishing effort had significant effects on the catch fluctuation of small yellow croaker(P<0.05).The fishing effort,sea surface salinity,El Ni1 o index and sea level height had significant effects on the catch change of these fish species(P<0.05).Fishing effort,sea surface temperature and El Ni1 o index had significant effects on the catch of squid(P<0.05).The fishing effort and El Ni1 o index had significant effects on the fluctuation of shellfish catch(P<0.05).Our findings indicated that the bottom fish biological fluctuations are caused by combined effects of fishing and environmental factors.Our results can serev as a reference to the rational development and management of fishery resources in Zhejiang Province,and future regulation and balance of marine fishery resources.
作者
王天姿
韩勤
罗宁建
张广旭
张豪
王迎宾
WANG Tianzi;HAN Qin;LUO Ningjian;ZHANG Guangxu;ZHANG Hao;WANG Yingbin(School of Fisheries,Zhejiang Ocean University,Zhoushan,Zhejiang 316022,China)
出处
《海洋湖沼通报》
CSCD
北大核心
2021年第3期77-85,共9页
Transactions of Oceanology and Limnology
基金
国家重点研究发展计划(2017YFA0604902)
舟山市科技局项目(2017C41012)
国家级大学生创新创业训练计划项目资助。
