基于Citespace软件的生态风险知识图谱分析

伴随着重大环境事件频发,环境污染、生态破坏现象的日益严峻,生态风险研究受到各国学者和政府的广泛关注。对整个生态风险研究领域进行全面系统的分析,旨在探究研究热点及趋势,归纳研究主题演进,了解当前国际研究现状。以Web of Science数据库为数据源,利用Citespace软件,绘制生态风险研究知识图谱,进行文献可视化分析。研究发现:(1)国际生态风险研究的发文数量经历了缓慢增长-平稳增长-迅速增长3个阶段;(2)生态风险研究分为奠基期,成长期,拓展期3个阶段,各阶段研究热点不同,当前研究热点是"空间分布、生态系统服务、城市土壤、源解析、海洋沉积物";(3)生态风险研究由单一风险源、风险受体、小尺度的评价演化为多种风险源、多种风险受体的大尺度综合评价;(4)欧美国家、学者奠定了该领域的研究基础,中国起步较晚但发展迅速。

Knowledge mapping analysis of ecological risk research based on Citespace

With the frequent occurrence of major environmental events, environmental pollution, and the ecological destruction, increasingly serious, ecological risk research has drawn extensive attention from scholars and governments in various countries. The need for environmental management and decision-making has promoted continual expansion of the field of ecological risk. Research topics, perspectives, and methods are becoming increasingly abundant. A comprehensive and systematic analysis of the whole field of ecological risk research is urgently needed. In this study, 2304 articles on ecological risk from the Web of Science core collection database were used as research objects, and Citespace software was used to draw a knowledge map of ecological risk research and make a visual analysis of the literature to understand the status of current international research, explore research hotspots and trends, and summarize the research topic evolution. The study found that: (1) The number of papers published in international ecological risk research has experienced three development stages: slow growth, steady growth, and rapid growth. (2) The study on ecological risk is divided into three stages: foundation, growth, and expansion, while the current research hotspots are "spatial distribution, ecosystem service, urban soil, source analysis, marine sediment." (3) The evaluation of ecological risk research has evolved from small-scale, single risk source and single risk receptor, to large-scale, multiple risk sources and multiple risk receptors. (4)The European and American countries and scholars laid the foundation for the research in this field. China started late but has developed rapidly. In the face of ecological risk research, multidisciplinary research papers with quantitative and qualitative visual summarization can make a more comprehensive and precise analysis of the research area. Combined with citation analysis, and the visualization software Citespace and bibliometrics, this study strives to show clearly the research hotspots and trends in the research field, the evolution of research topics, and the current situation of the research clearly. It will provide useful references and inspiration for future ecological risk research.