2001—2020年天津近岸海域赤潮特征分析  

Analysis of Red Tide Characteristics in Tianjin Coastal Seawater

作　　者：陈曦 石海明 徐玉山 CHEN Xi;SHI Haiming;XU Yushan(Tianjin Ocean Center of the Ministry of Natural Resources,Tianjin 300457,China)

机构地区：[1]自然资源部天津海洋中心,天津300457

出　　处：《海洋开发与管理》2024年第4期106-113,共8页Ocean Development and Management

基　　金：基于大数据融合下的渤海湾赤潮灾害早期预警研究(2023B01)。

摘　　要：文章通过对2001—2020年天津近岸海域发生的赤潮进行统计分析发现,近年来天津近岸海域赤潮发生呈现高频次小规模的特征。2012—2020年赤潮年度累计持续天数大体呈增加趋势,这主要是受DIP控制。夏季是赤潮高发期,尤其是6月和8月,单次赤潮过程持续时间较长。天津近岸海域赤潮肇事种主要是夜光藻、中肋骨条藻和尖刺伪菱形藻,这3种藻类在时间上有交替成为肇事种的特征,这主要与它们对水文环境的适应性相关。有毒赤潮主要集中在6—9月暴发,9月暴发的赤潮多为有毒赤潮,天津近岸海域有毒赤潮种多为多环旋沟藻和米氏凯伦藻。Through statistical analysis of the red tides that occurred in the coastal waters of Tianjin from 2001-2020,it was found that in recent years,the occurrence of red tide in Tianjin coastal seawater exhibits high-frequency,small-scale characteristics.The annual cumulative du-ration of red tide from 2012 to 2020 shows a general increasing trend,which is mainly controlled by DIP.Summer months were the peak periods of red tide,especially in June and August,the duration of a single red tide was long.Red tide causing species was evolving toward dinoflagel-lates in the Tianjin coastal seawater.Noctiluca scinillans,Skeletonema costatum and Pseudo-nitzschia pungens caused the most red tide,these three types of algae have the characteristic of alternating over time to become the causing species,mainly due to their adaptability to the hydrological environment.Toxic red tides mainly occurred from June to September,the red tides that occurred in September were mostly toxic.The toxic red tide species in Tianjin coastal waters are mostly Cochlodinium pol ykrikoides and Gymnodinium m ikimotoi.

关 键 词：天津近岸海域 赤潮 赤潮肇事种 有毒赤潮 

分 类 号：X55[环境科学与工程—环境工程] P7[天文地球—海洋科学]