基于CiteSpace文献计量的沉积物微塑料研究进展与热点分析

为探究沉积物微塑料的研究现状、热点和未来发展趋势，以Web of Science核心合集和CNKI(中国知网)的文献资料为数据源，利用CiteSpace知识图谱分析工具，从年发文量、作者群体、发文机构、关键词聚类及突现等方面进行可视化分析。结果表明：沉积物微塑料的相关研究正处于快速发展阶段，且以外文文献快速增长为主要特征。中国在该领域的研究具有重要的国际影响力，发文量位居首位，且中国科学院、中国科学院大学及华东师范大学的发文量位列前3;作者群体呈多而分散的特点，发文量最高的作者来自中国科学院。关键词聚类分析和突现词分析结果表明，当前沉积物微塑料研究主要集中于海洋沉积物中微塑料的量化方法、微塑料的生物摄入与富集等方面，而淡水沉积物中微塑料的统一定量分析方法、微塑料对生物的毒性效应及其与典型污染物的复合毒性效应等将是该研究领域未来的重要研究方向和热点。

RESEARCH PROGRESS AND HOTSPOT ANALYSIS OF SEDIMENT MICROPLASTICS BASED ON CITESPACE LITERATURE METROLOGY

To explore the research progress, hot spots and future development trend of sediment microplastics, taking the core collection of Web of Science and the literature of CNKI (China National Knowledge Network) as data sources, the visual analysis was carried out from the aspects of annual publication volume, author group, publication organization, keyword clustering and emergence using the citespace knowledge map analysis tool. The results showed that the researches on sediment microplastics were in a rapid development stage, and the main feature was the rapid growth of foreign literatures. China's researches in this field had important international influence, and the number of papers published ranks first. The number of papers published by the Chinese Academy of Sciences, the University of the Chinese Academy of Sciences, and East China Normal University ranks in the top three. The author group analysis showed the characteristics of many and scattered, and the author with the highest number of papers was from the Chinese Academy of Sciences. The results of keyword cluster analysis and emergent word analysis indicated that the current researches on microplastics in sediments mainly focused on the quantitative methods, biological intake and enrichment of microplastics in marine sediments, while the unified quantitative analysis methods of microplastics in freshwater sediments, the toxic effect of microplastics on organisms and their combined toxic effect with the typical pollutants will be important directions and hotspots for future research.