基于CiteSpace分析近30年土壤重金属阈值研究趋势及热点  

Trends and hot spots of soil heavy metal threshold research in the past three decades based on CiteSpace

作　　者：黄奕航 朱琳芳 戈子轩 彭佩钦 陈怀满[1] 吴同亮 王玉军[1] HUANG Yihang;ZHU Linfang;GE Zixuan;PENG Peiqin;CHEN Huaiman;WU Tongliang;WANG Yujun(State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Sciences,Nanjing 210008,China;College of Environment Science and Engineering,Yangzhou University,Yangzhou 225127,China;College of Environmental Science and Engineering,Central South University of Forestry and Technology,Changsha 410004,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所),南京210008 [2]扬州大学环境科学与工程学院,江苏扬州225127 [3]中南林业科技大学环境科学与工程学院,长沙410004 [4]中国科学院大学,北京100049

出　　处：《农业环境科学学报》2024年第11期2443-2454,共12页Journal of Agro-Environment Science

基　　金：国家重点研发计划项目(2021YFC1809102)。

摘　　要：为深入探讨土壤重金属环境阈值研究现状及发展趋势,本文利用文献计量学方法,通过CiteSpace软件,基于Web of Science和CNKI数据库中相关文献,综合分析了近30年来国内外土壤重金属环境阈值的研究趋势及热点。结果显示,国际上研究热点主要聚焦于“食品安全阈值”“生态安全阈值”“阈值研究对象”以及“重金属界面过程”4个方面,而国内的研究热点主要聚焦于“物种累积规律”“阈值推导”和“环境容量模型”等方面。针对研究不同重金属的文献进行分析,生态安全阈值、食品安全阈值和人体健康风险阈值的主要推导方式分别为物种敏感性分布(SSD)法、经验回归方程法和目标危险系数法。通过对比总结不同重金属阈值及各国土壤环境标准,发现土壤重金属生态安全阈值和食品安全阈值在数值上存在较大差异,且不同国家的环境质量标准亦有较大差别。国内重金属阈值研究应该更加关注土壤重金属界面作用过程和文献数据收集等方面,并将大数据分析和机器学习与重金属阈值研究相互结合,尽快完善各类重金属土壤环境阈值,为制定符合我国国情的土壤环境质量标准提供数据支撑。The determination of soil heavy metal environmental thresholds is a crucial aspect in establishing soil environmental quality standards.To provide a scientific basis for threshold research,this study employed CiteSpace to analyze the research trends and hotspots of soil heavy metal environmental thresholds over the past 30 years using relevant literature from the Web of Science and CNKI databases.The findings suggested that international research hotspots were focused on"food safety thresholds","ecological safety thresholds","thresholds research objects",and"heavy metal interface processes".However,domestic research hot spots were mainly concentrated on"thresholds derivation","species accumulation pattern",and"environmental capacity models".Ecological safety thresholds,food safety thresholds and human health risk thresholds were mainly derived using the SSD method,empirical regression equation method and target hazard quotient method,respectively.After comparing different heavy metal thresholds and national soil environmental standards,this study found that the ecological safety thresholds and food safety thresholds for soil heavy metals had significant differences in their numerical values,and that environmental quality standards varied significantly among different countries.Compared to the international threshold for heavy metals in soil,domestic research should focus on the interface interaction process of heavy metals and literature data collection.To improve the reliability of various heavy metal environmental thresholds and provide support for the research of environmental capacity and soil environmental quality standards,it is essential to combine big data and machine learning with the research of heavy metal thresholds.

关 键 词：土壤 重金属 阈值 文献计量学 CITESPACE 

分 类 号：G353.1[文化科学—情报学] X53[环境科学与工程—环境工程]