基于VIIRS/DNB数据的新冠疫情对黄渤海灯光渔船活动影响的研究  

Studies of COVID-19 Pandemic on Light Fishing Vessel Activity in the Yellow Sea and Bohai Sea Based on VIIRS/DNB Data

作　　者：孙贺 刘阳 田浩 田永军[1] Sun He;Liu Yang;Tian Hao;Tian Yongjun(Laboratory of Fisheries Oceanography,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渔业海洋学实验室,山东青岛266003

出　　处：《中国海洋大学学报（自然科学版）》2023年第8期35-43,共9页Periodical of Ocean University of China

基　　金：国家重点研究发展计划项目(2018YFD0900902);国家自然科学基金面上项目(41976210)资助。

摘　　要：为探究新冠疫情对黄渤海灯光渔船活动的影响,本研究基于可见光红外成像辐射计/昼夜波段(VIIRS/DNB)夜光遥感数据开发了适用于黄渤海灯光渔船的提取方法,提取了2018年11月至2020年11月每日灯光渔船点位信息。研究表明,疫情爆发后,2019年12月至2020年2月黄渤海灯光渔船数减少了57.3%。其中,中方水域降幅较大,达-63.07%;青海渔场、海州湾渔场、中韩渔业协定区渔船密集区大幅消失;韩方渔船转移到西海岸和济州岛周边水域作业。随着疫情得到控制,2020年2月至4月灯光渔船数增加了164.71%;沿岸灯光渔业恢复,渔民进入远海作业。2020年4月黄渤海灯光渔船数恢复到管控前(11月)的88.66%。通过分析灯光渔船数量的变动发现,中韩渔业协定区渔船数量变动最大,渤海水域变动最小。疫情主要影响青海渔场至海州湾渔场、中韩渔业协定区和韩国西海岸的灯光渔业。本研究结果为重大公共卫生事件发生时渔船的动态监测和管理提供了参考。To investigate the impact of COVID-19 pandamic on the activity of light fishing vessels in Yellow Sea and Bohai Sea,in this study,we developed a light fishing vessels detection algorithm in this sea area based on VIIRS/DNB nighttime light remote sensing data,and extracted daily light fishing vessel point information from Nov.2018 to Nov.2020.The results showed that the number of light fishing vessels in this sea area decreased by 57.3%from Dec.2019 to Feb.2020 after COVID-19 outbreak.The decrease was larger in Chinese waters,amounting to-63.07%.The dense waters of fishing vessels in Qinghai fishing grounds,Haizhou Bay fishing grounds and China-Korea fisheries agreement water disappeared significantly.Korean fishing vessels moved to the west coast and waters of Jeju Island to operate.When the COVID-19 pandemic was under control,the number of light fishing vessels increased by 164.71%from Feb.to Apr.2020,and the coastal light fishery resumed and fishermen entered deep sea operations.The number of light fishing vessels in Yellow Sea and Bohai Sea recovered to 88.66%of that before pandemic control(Nov.)in Apr.2020.By analyzing the seasonal changes in the number of light fishing vessels,it was found that the number of fishing vessels in the China-Korea Fisheries Agreement water changed the most and the Bohai Sea waters changed the least.The COVID-19 pandemic mainly affected the lighted fisheries from Qinghai fishing grounds to Haizhou Bay fishing grounds,the China-Korea Fisheries Agreement water,and the west coast of Korea.The results of the study will provide a data base for monitoring and management of fishing vessel dynamics in the face of major public health events in the future.

关 键 词：新冠疫情 夜光遥感 可见光红外成像辐射计 昼夜波段 灯光渔船 黄海 渤海 

分 类 号：S931.3[农业科学—渔业资源]