Scientometric analysis of papers published in 1989-2018 of <i>Journal of Lake Sciences</i> based on CiteSpace and CNKI database

湖泊科学是研究湖泊及其流域在人与自然相互作用下对生态系统、环境间的关系的一门交叉学科.为了探究湖泊科学研究的发展与研究前沿，通过对《湖泊科学》创刊30年（1989-2018年）来发表的全部2555篇论文的统计，分析了年发文量与影响因子年际变化趋势，并运用CiteSpace V软件绘制了可视化知识图谱.结果表明：30年来《湖泊科学》年发文量、被引频次及影响因子整体呈稳步增加的趋势，期刊拥有较为稳定与广泛的学术影响力.相关研究范围主要涉及全球气候变化、湖泊生态系统及群落结构、湖泊富营养化等方面，研究区域则多为湖泊分布较广、生态系统较脆弱且环境问题较为突出地区.文献关键词的分析得出了研究热点与趋势的三个阶段.CiteSpace对作者所在机构的分析表明，近10年来，高校已经超过研究所成为期刊作者主体.关键词词频分析表明，太湖、沉积物、富营养化一直是刊发内容的热点，而近10年来，浮游植物及群落结构、三峡水库逐渐成为热点.随着湖泊研究与遥感技术、统计与模拟、环境化学等进一步交叉，湖泊科学研究向着深入化、精细化方向发展.目前，湖泊科学研究已形成了湖泊水文与生态系统、湖泊生态恢复与环境评价、沉积环境与全球变化等较为稳定的研究团队，高校与科研院所成为湖泊研究主体，具有显著的区域性和集聚效应.期刊论文读者下载量统计分析表明，《湖泊科学》官网（www.jlakes.org）已经成为读者阅读和下载论文的主要渠道.根据知网数据库的统计分析，30年来，刊发论文均获得了不同数量的读者引用，单篇最高被引636次，篇均被引24次.期刊高被引论文分析说明，湖泊作为生态环境保护的重要载体，加强湖泊污染问题的预防、湖泊富营养化预测及其生态修复技术等业已成为相关研究的热点与趋势所在.同时，随着全国湖泊流域数据平台的建设与大数据融合，湖泊流域物质交换、人文影响定量评估、健康与管理、湖泊湿地生态系统保护等方面的研究将进一步加快，而湖泊研究成果在区域的应用，将为改善水环境质量，确保区域生态环境安全，为湖泊生态保护及环境改善提供有力支撑.;Lake science is an interdisciplinary subject to study the relationship between human and nature interaction on ecosystem and environment in lakes and their watersheds. In order to explore the development and research frontiers of lake science in China, this paper analyzes the interannual variation trend of the annual output and impact factors through the statistics of 2555 papers of the Journal of Lake Sciences published in the past 30 years (1989-2018) and the visual knowledge map by CiteSpace V. The results show that the annual volume, citation frequency and impact factors of the Journal of Lake Science display a steady increase trend, and indicate the stable and extensive academic influence of the journal. The relevant research scope mainly involves global climate change, lake ecosystems and community structure, lake eutrophication and other aspects. Meanwhile, the research focuses on the areas of lakes widely distributed and fragile ecosystems. According to the keywords, the research hotspots and trends can be divided into three stages. Analysis of the author's structure shows that universities have overtaken research institutes to become the main parts of journal authors in the past 10 years. The analysis of the key words frequency demonstrates that Taihu Lake, sediment and eutrophication have been hot topics in the publication. In the past 10 years, phytoplankton and its community structure, the Three Gorges Reservoir have gradually become hotspots. With the further intersection of lake research and remote sensing technology, statistics and simulation, environmental chemistry and so on, lake research field will become more in-depth and refined. At present, lake research has formed relatively stable research teams in lake hydrology and ecosystem, lake ecological restoration and environmental assessment, sedimentary environment and global change. Universities and research institutes have become the main body of lake research with obvious regional and agglomeration effects. Statistical analysis of the download volume of the journal shows that the journal website has become the main channel for readers to study and download papers. The statistical analysis of CNKI database suggests that the published papers have been cited by different numbers of readers in the past 30 years, with the highest citation frequency of 636 times and 24 citations per article. Analysis of high-cited papers indicate that, as an important carrier of ecological environment protection, strengthening the prevention of lake pollution, prediction of lake eutrophication and ecological restoration technology have become hotspots and trends in related research. At the same time, the research on material exchange, quantitative assessment of human impact, health and management, and protection of lake wetland ecosystem will be further accelerated with the construction of the national lake basin data platform and the integration of big data. The application of lake research results in the region will provide strong support for improving the quality of the water environment, ensuring the safety of regional ecological environment, and improving lake ecological protection and environment.