HOTSPOTS AND TRENDS OF GROUNDWATER RELATED RESEARCHES NEAR LANDFILLS:VISUAL ANALYSIS BASED ON CITESPACE
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摘要: 随着经济社会的发展,我国每年会产生大量生活垃圾,而填埋由于具有成本低、操作便捷等优点,成为应用最为广泛的生活垃圾处理手段。然而垃圾填埋却会产生大量的垃圾渗滤液,严重威胁周边地下水的安全。为探讨垃圾填埋场地下水领域的研究热点与前沿,基于文献计量与数据可视化分析软件CiteSpace对Web of Science数据库进行了文献统计与信息挖掘,以期为我国垃圾填埋场地下水研究提供借鉴与参考。结合CiteSpace分析图谱发现,研究热点主要有渗滤液、吸附、重金属、评价方法(层次分析法)、多环芳烃、渗滤液污染指标、硝化等;研究前沿已从重金属、挥发性有机物(甲烷、碳)等具体的污染物质研究逐渐转变为污染区域、污染物影响、地理信息系统等研究。结合相关文献及CiteSpace结果进行分析认为,基于地理信息系统知识精细刻画区域内污染物的传输与扩散模型,以及结合污染区域健康风险评估进行系统的垃圾填埋场污染修复和治理工作将成为今后的发展趋势。Abstract: A large amount of domestic garbage is generated in China every year. Landfill has become the most widely used domestic waste disposal method, due to its low cost and convenient operation. However, the generated landfill leachate seriously threatens the safety of surrounding groundwater. In order to explore the research hotspots and frontiers in the field of groundwater in landfills, this article carried out literature statistics and information mining on the Web of Science database based on analysis software CiteSpace. Combined with CiteSpace analysis graphs, it was found that the research hotspots mainly included leachate, adsorption, heavy metals, evaluation methods(analytic hierarchy process), polycyclic aromatic hydrocarbons, leachate pollution indicators, nitrification, etc. The research frontier gradually changed from the research of specific pollutants such as heavy metals and volatile organic compounds(methane, carbon) to the research of polluted areas, impact of pollutants, and geographic information systems. Based on the analysis of relevant literature and the results of CiteSpace, it was believed that there were two main development trends in the future. Firstly, based on the knowledge of geographic information system, the transmission and diffusion models of pollutants in the region should be finely described. Secondly, combined with the health risk assessment methods of contaminated areas, systematic landfill pollution remediation and treatment should be carried out.
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Key words:
- landfill /
- groundwater /
- CiteSpace /
- knowledge graph /
- research hotspot /
- research frontier
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