关键词：
CiteSpace;夜间灯光遥感;知识图谱;渔船;渔业
摘 要：
为探明夜间灯光遥感技术在渔业研究中的应用现状和发展趋势,以四大中文数据库(中国知网、维普、万方、百度学术)与"Web of Science"核心合集为数据源,结合CiteSpace知识图谱方法,对国内外利用夜间灯光遥感进行灯光渔业研究的发文量、发文机构、文献共被引及高频关键词等进行分析.结果显示:①发文量总体上呈现增长趋势,2013年以后热度明显增加,2018年后中国发文量与世界处于同一水平.②关键词聚类与频次分析表明,研究区域主要集中在太平洋、大西洋以及中国近海等海域,研究尺度呈现从大范围到精细化的变化特征;云层检测与影像去噪是关系到渔船提取精度的关键预处理步骤;灯光渔船提取方法朝着自动化、高精度、系统化的方向发展.③共被引时区图谱分析显示,研究以2005年和2013年为间隔经历了 3个阶段,热点从单一数据支持下的渔船分布监测深化为渔场与海洋环境特征相互关系的研究.④机构与国家网络分析结果显示,美国和中国是此方向的主要研究国家.
译 名：
Application of nighttime light remote sensing in fishery based on bibliometrics
关键词：
CiteSpace%nighttime light remote sensing%knowledge atlas%fishing vessels%fisheries
摘 要：
Nighttime light remote sensing can capture fishing vessels lights at sea,becoming a unique means to observe the dynamic changes of fishing boats.Using nighttime light data to extract fishing vessels,quantify the number and distinguish the types of fishing vessels can provide basis and supervision means for illegal fishing.In this paper,four major Chinese journal databases(CNKI,VIP,WanFang,Baidu Scholar)and the core collection of"Web of Science"were used as data sources,and CiteSpace was used to sort out relevant papers on the application of nighttime light data at home and abroad in marine fishery;the publication trends of domestic and foreign nighttime light data application in fishery remote sensing were analyzed;keyword analysis was utillzed to discover research hotspots over the years and to grasp research frontiers and hotspots.The results show:① On the whole,domestic and foreign research on nighttime light data in light fishery remote sensing has maintained a high degree of popularity since 2013,but compared with international status,the domestic start is late and the research content is relatively lagging;but it caught up to leading level in 2018.②Nighttime light fishery research areas are mainly concentrated in the coastal waters of China and the Pacific,Atlantic,Indian oceans and others.Among them,the South China Sea has received the most attention.The research scale presents local-global-local;the methods are developing in the direction of automation,high precision,and systematization.In the future,with the richness of data types,a multi-scale observation network will be formed,and the refinement and quantification on a large scale will be a research hotspot.③The historical process of nighttime light remote sensing fishery application can be roughly divided into three stages:the initial stage from 1997 to 2005,the middle stage from 2006 to 2013,and the development stage from 2013 to the present.The research focus has gradually changed from the monitoring and management of the distribution of fishing vessels to the automatic identification of fishing vessels,and then to the superposition application of nighttime multi-source remote sensing data.In the future,the integration and refined processing of multi-source data will continue to be strengthened.With the deepening of scientific research,we will continue to combine the application of multivariate data to improve the extraction accuracy of fishing vessels under the background of automation and combine with marine environmental elements to participate in precise fishing and fishery forecasting.④US and China are key countries in the application of nighttime light data in marine fisheries,and US has the highest number of publications and the most active research institutions and scholars.The application research of nighttime light remote sensing data in marine fishery is mainly distributed in the North America(United States,Canada),Europe(United Kingdom,France,Italy,etc.),and Asia(China,Japan,Russia,etc.).This study systematically analyzes the remote sensing extraction of fishing boats with lights at night,clarifies the current research context and hotspots,and offers some reference for future research on the extraction of fishing boats with lights at night.
