粤东沿岸上升流年际变化及其与渔业相关性分析  

Interannual Variations of Upwelling in the East Coast of Guangdong and Its Correlation with Fisheries

作　　者：温浩 宏波 WEN Hao;HONG Bo(School of Civil Engineering&Transportation,South China University of Technology,Guangzhou 510640,China)

机构地区：[1]华南理工大学土木与交通学院,广东广州510640

出　　处：《人民珠江》2020年第7期1-11,17,共12页Pearl River

基　　金：国家自然科学基金项目(41976014);中国科学院前沿科学重点研究项目(QYZDJ-SSW-DQC022)。

摘　　要：全球变暖背景下,沿岸上升流的年际变化趋势成为近年来全球气候变化的研究热点。基于2002—2016年温度、叶绿素浓度、风场、2010—2018年广东省海洋捕捞量资料,详细研究了粤东沿岸上升流强度和中心位置的年际变化趋势,探讨了上升流强度与风速、海洋捕捞量与上升流强度的关系。结果显示,近15年来,粤东沿岸上升流强度总体呈现加强趋势;其上升流强中心位置最大概率发生在23.6°~23.7°N,且存在北移趋势,沿岸风在上升流的年际变化中发挥了重要作用;排除捕捞结构被破坏等因素,广东省海洋捕捞量与上升流相关性很高,相关系数达到-0.81。Under the background of global warming,the interannual variation trend of coastal upwelling has become a research hotspot of global climate change in recent years.Based on the data of temperature,chlorophyll concentration and wind field from 2002 to 2016,marine catches in Guangdong Province from 2010 to 2018,this paper studies the interannual variation trend of intensity and center of upwelling along the east coast of Guangdong Province,and discusses the relationship between upwelling intensity and wind speed,marine catches and upwelling intensity.The results show that in the past 15 years,the intensity of upwelling in the east coast of Guangdong Province is generally strengthened;the center of upwelling is at 23.6°~23.7°N in all probability,and there is a trend of northward movement.The coastal wind plays an important role in the interannual variation of upwelling;excluding the damage of fishing structure and other factors,the correlation between marine catches and upwelling in Guangdong Province is very high,and the correlation coefficient reaches to -0.81.

关 键 词：上升流 年际变化 沿岸风速 捕捞量 

分 类 号：P732[天文地球—海洋科学]