摘要
结合2001—2020年广东近岸海域赤潮发生记录,利用地理信息系统(GIS)技术研究该海域赤潮发生的时空分布特征,并对其危害程度进行了评估。结果表明,广东近岸海域赤潮发生最频繁的区域为珠江口海域及大鹏湾、大亚湾海域,其次为粤东潮汕海域和粤西湛江海域;20年以来广东近岸海域共发生赤潮202次,其中影响面积超过100 km^(2)的有28次;赤潮发生次数最多的月份是4月,高发季节是春季;粤西湛江附近海域多发硅藻赤潮,珠江口附近海域及大鹏湾、大亚湾海域多发甲藻赤潮,粤东潮汕地区附近海域多发金藻赤潮;粤西湛江东部、大亚湾以及汕尾西部海域所发生的赤潮对渔业资源的危害较大,而其他区域赤潮高发主要受到近岸水体富营养化以及港口船舶压舱水的影响。利用GIS绘制广东省赤潮灾害分布图有助于政府部门形成广东省赤潮整体分布概念,为监测预警等工作总体布局提供支撑。
Based on the records of harmful algal blooms(HABs)in Guangdong coastal area from 2001 to 2020,Geographic Information System(GIS)technique was employed to analyze the temporal and spatial characteristics of these HAB events,and the valuation of the pollution caused by the HABs was further performed.It was observed that,these HAB events occurred mainly in waters from Pearl River Estuary,Dapeng bay and Daya bay,followed by water regions in Chaoshan area of eastern Guangdong province and Zhanjiang area of western section.The HAB events occurred 202 total times,28 of which were larger than 100 km^(2) in area.The highest frequency of HABs occurred in April in spring.Diatom was found frequently in Zhanjiang area while dinoflagellate in Pearl River Esturay,Dapeng bay,Daya bay,and chrysophyta in Chaoshan area.The HAB events did great harm to fishery resources occurred in the area of eastern Zhanjiang,Daya Bay and western Shanwei.The high incidence of HABs in other regions was mainly affected by the eutrophication and the ballast water of ships in ports.Drawing the distribution map of HABs disasters in Guangdong coastal area using GIS can help the government to set up the concept of the whole distribution of HABs in Guangdong.Providing support for the overall layout of HABs monitoring and early warning meanwhile.
作者
陈炜婷
姜广甲
邓伟
石荣贵
胡慧娜
黄盛
Chen Weiting;Jiang Guangjia;Deng Wei;Shi Ronggui;Hu Huina;Huang Sheng(South China Sea Environmental Monitoring Center,State Oceanic Administration,Nansha Islands Coral Reef Ecosystem National Observation and Research Station,Guangzhou 510300,China)
出处
《环境工程》
CAS
CSCD
北大核心
2023年第S02期49-53,共5页
Environmental Engineering
基金
2022年省级促进经济高质量发展(海洋经济发展)海洋六大产业专项重点项目(GDNRC[2022]48)
农业农村部南海渔业资源开发利用重点实验室开放课题资助项目(FREU2022-02)
关键词
海洋生物学
赤潮
地理信息系统
生态灾害
浮游植物
marine biology
harmful algal blooms(HABs)
geographic information system
ecological disaster
phytoplankton
