基于Citespace的土壤重金属污染评价研究文献计量分析

Biliometric Analysis of Soil Heavy Metal Pollution Evaluation Based on Citespace

土壤是人类赖以生存的关键资源,土壤重金属污染对人们身心健康及社会的可持续发展造成不良影响,对土壤重金属污染进行科学的评价是获得土壤污染程度与风险情况并实施土地管理措施的基础。以Web of Science(WOS)核心数据库和中国学术期刊(CNKI)数据库的文献资料为基础,利用Citespace可视化分析工具,对2002—2020年近19年发表的土壤重金属污染评价相关文献从发文量、发文机构、作者群体和关键词方面进行数据挖掘及计量分析。研究表明,土壤重金属污染评价研究文献数量呈快速增长态势,其中外文文献增长速度最为显著;在外文文献发文数量中,以中国科学院为首的中国科研机构占据重要地位,其最近3年发文量均在50篇以上,年增长速度为5.14%,表明我国在该研究领域有着较强的国际学术影响力;从关键词共现聚类分析可知,人体健康及生态风险评价、重金属在土壤中形态分析及污染源解析等问题受到广泛重视;为综合评价土壤环境质量,研究人员倾向于将重金属污染与多环芳烃(PAH)和土壤养分进行联合研究;寻找敏感型生物标志物的生物监测研究一直是该领域的研究热点,而重金属污染风险评价方法的完善以及确源方法体系的构建是未来该领域重要研究方向。探讨国内外土壤重金属污染评价研究现状及发展趋势,以期对未来相关研究提供借鉴和参考。

Soil is a key resource for human survival.Soil heavy metal pollution has a negative impact on people’s physical and mental health and the sustainable development of society.Scientific evaluation of soil heavy metal pollution is the basis for obtaining the degree and risk of soil pollution and implementing land management measures.Based on the literatures of Web of Sciencecore database(WOS)and China national knowledge infrastructure(CNKI),Citespace was used to analyze the literatures which related to soil heavy metal pollution evaluation and published in the past 19 years from 2002 to 2020 in terms of the number of articles,issuing institutes,author groups and keywords.Results showed that the number of literature on soil heavy metal pollution assessment was growing rapidly,among which the growth rate of foreign language literatures was the most obvious.Chinese research institutes led by the Chinese Academy of Sciences moved to the forefront.The number of articles published by the Chinese Academy of Sciences in the last three years was above 50,and the annual growth rate of articles was 5.14%,which both indicated that China had a strong international academic influence in this field.Clustering analysis of key words showed that human health and ecological risk evaluation,heavy metal morphology analysis in soil and source apportionment had received extensive attention;for comprehensive evaluation of soil environmental quality,researchers tend to conduct joint research on heavy metal pollution with polycyclic aromatic hydrocarbons(PAHs)and soil nutrients;biomonitoring for finding sensitive biomarkers had been a hot spot in this field.And the improvement of heavy metal pollution risk evaluation methods and the construction of the source confirmation method system were important directions for future research.We discussed the research status and development trend of the soil heavy metal pollution evaluation at home and abroad,with a view to providing some references for relevant research to come.