基于CiteSpace的重金属污染土壤修复研究文献计量分析

以Web of Science数据库及中国知网的文献资料为数据源,利用CiteSpace文献计量工具,对1998—2018年重金属污染土壤修复研究领域的相关文献从发文量、发文国家、发文机构、关键词、作者群体、载文期刊及论文被引频次方面进行分析,以此探讨国内外该领域研究现状及未来发展态势。结果表明,土壤重金属修复研究文献数量呈快速增长态势,中国、美国、西班牙、意大利、韩国等是外文文献发文量较多的国家;外文文献主要载文期刊有Chemosphere、Journal of Hazardous Materials、Environmental Science and Pollution Research等,中文文献主要载文期刊有《农业环境科学学报》《生态环境学报》等;在外文文献发文数量、论文被引频次方面,中国科研机构都占据重要地位,表明我国在该研究领域有着较强的国际学术影响力;从关键词出现频次及文献被引频次分析可知,土壤镉、铅、锌、铜的累积特征及修复是当前该领域主要研究内容,而植物修复及生物炭在土壤重金属修复研究中的应用是当前该领域研究热点;修复机理研究、新型修复技术的研发、综合修复体系研究以及土壤重金属修复大田实践示范工作是未来该领域研究的重要方向。

Bibliometric analysis of the repair of heavy metal-contaminated soil based on CiteSpace

To investigate the current status in the field of heavy metal-contaminated soil remediation, this study analyzed the development of relevant literatures from 1998 to 2018 using CiteSpace as a bibliometric tool. The results showed that the number of publications on soil heavy metal remediation has grown rapidly over the study period. The five countries with the most published papers included China, Spain, Italy, South Korea, and the United States of America. The main journals in foreign language literature included Chemosphere, Journal of Hazardous Materials, and Environmental Science and Pollution Research. The main Chinese-language journals included Journal of AgroEnvironment Science and Ecology and Environment Sciences. In terms of the number of articles published in foreign languages and the frequency of citation of papers, Chinese scientific research institutions occupied an important position, indicating that China had strong international academic influence in this research field. The frequency of keywords occurrence and citation of literature indicated that accumulation characteristics and remediation of cadmium, lead, zinc, and copper in soil were the main focuses of research in this field. In addition, research in phytoremediation and the application of biochar in repair of heavy metal-contaminated soil were currently popular research topics in this field. Research of new repair technology, comprehensive repair systems, and repair mechanisms and demonstration of practical heavy metal repair in actual farmland soil are important future directions in this field.