基于拉格朗日粒子追踪的黄海中南部小黄鱼幼体早期输运初步研究  

Preliminary Study on Early Transport of Larvae of Larimichthys polyactis in the Central and Southern Yellow Sea Based on Lagrangian Particle Tracking

作　　者：黄康康 叶振江[1] 于海庆 田永军[1] HUANG Kang-kang;YE Zhen-jiang;YU Hai-qing(College of Fisheries,Ocean University of China,Qingdao 266003,China)

机构地区：[1]中国海洋大学水产学院,山东青岛266003

出　　处：《浙江海洋大学学报（自然科学版）》2020年第6期538-543,共6页Journal of Zhejiang Ocean University：Natural Science

基　　金：国家重点研发计划(2018YFD0900903)。

摘　　要：本文基于2011-2018年水动力模型输出的表层环流,采用拉格朗日粒子追踪方法对小黄鱼主要产卵期鱼卵、仔鱼的输运进行模拟,探讨了小黄鱼早期输运的年际差异。通过对模拟结果的统计分析,确定小黄鱼稚鱼的主要聚集区,并对该区域5-7月平均海表温度与山东省小黄鱼捕捞量进行分析。研究表明:(1)同一年间释放粒子输运空间分布不存在明显差异,不同年份释放粒子在空间分布上有差异,但主要向东北方向移动;(2)不同年份释放粒子经历温度变化不同,且年际间温度相差较大;(3)在2000年之前,山东省小黄鱼产量与稚鱼主要聚集区平均温度变化趋势相一致,温度的升高或降低对应着捕捞量的升高或降低;2000年后,温度对于小黄鱼捕捞量的影响减小。本研究探索了黄海小黄鱼早期输运过程及其对资源动态的影响,为解析小黄鱼资源动态提供科学依据。Based on the surface circulation output of the hydrodynamic model from 2011 to 2018,the Lagrangian particle tracking method was used to simulate the transport of eggs and larvae in the main spawning period of Larimichthys polyactis,and the interannual differences in the early transport of L.polyactis were discussed.Based on the statistical analysis of the simulation results,the main aggregation area of juvenile L.polyactis was determined,and the average sea surface temperature in this region and the total catch of L.polyactis in Shandong Province from May to July were analyzed.The research shows that:(1)There is no significant spatial distribution difference of the particle transported during different pieriod of the same year with the main movement direction of the northeast,and the spatial distribution style of the released particles in different years may varied;(2)The released particles in different years undergo different temperature changes,and the inter-annual temperature difference is large;(3)Before 2000,the catch variation of L.polyactis of Shandong Province was consistent with the average temperature change trend in the main gathering areas of juveniles.However,the effect of temperature on the catch of L.polyactis decreased after 2000.This study explores the early transport process of L.polyactis in the Yellow Sea and its impact on resource dynamics,and help to analyze the dynamics of L.polyactis resources.

关 键 词：小黄鱼 早期输运 拉格郎日方法 捕捞量 动态 

分 类 号：S917.4[农业科学—水产科学]