湿地微塑料污染研究热点与进展的可视化剖析

Visual Analysis of Research Hotspots and Trends Regarding Microplastic Pollution of Wetland Ecosystem

为深入了解湿地微塑料污染的研究现状、热点及科研力量分布,该文以Web of Science核心合集数据库作为文献分析的数据来源,使用VOSviewer、SCImago Graphica等软件对该领域研究文献的发文趋势、主要发文国家、机构、作者以及关键词进行统计和聚类共现分析。结果表明:(1)科研力量集中分布于亚洲、欧洲、澳洲与北美地区,中国、美国和德国的发文量位居前三,瑞士、荷兰和葡萄牙等国的研究则开展较早;研究机构方面,中国科学院发文量居世界首位,高等院校是主要产出机构;其中华南农业大学的王俊等学者活跃度较高,成果产出位居前列。(2)研究热点聚焦“典型湿地类型沉积物与水体中的微塑料污染分布特征”、“迁移与富集状况”、“生态毒性”、“其他污染物的赋存机制”、“采样方法与鉴定手段”与“降解与去除方法”。(3)研究大致划分为起步阶段(2010-2014年)、探索阶段(2015-2017年)与发展阶段(2018-2022年)3个阶段,当前该领域研究仍处于急速发展阶段,前沿热点方向仍聚焦湿地微塑料的分布、迁移、毒性、检测与治理等研究。未来研究热点将关注完善湿地微塑料检测方法与表征的标准体系,探究人为活动干扰下的各类型湿地生态系统的微塑料污染特征,建立针对湿地生态系统的微塑料污染风险评估模型以及开展微塑料污染治理方式的研究。综上所述,该研究可为学者深入了解湿地微塑料研究发展动态提供参考,为进一步把握该领域的研究方向提供思路。

For the purpose of deepening the understanding of the current situation of research on the topic of microplastic pollution in wetlands with respect to the research hot spots and distribution of scientific research forces,in this paper,basing on the Web of Science core collection database the authors performed statistical studies and cluster co-occurrence analysis regarding the publication trend,main publication countries,institutions,relative authors and key words of the research literature by use of VOSviewer and SCImago Graphica.The findings included:the research forces mainly in the regions of Asia,Europe,Australia and North America in which China,the United States and Germany are the top three countries in terms of the number of papers published,and on the other hand,Switzerland,the Netherlands and Portugal are the earliest countries in this research field.As for the research institutions,publications by Chinese Academy of Sciences rank first in the world,and papers published by university account for the highest proportion.Scholars like Wang Jun are more active in this field and have gained good research results;The researches mainly focus on six research topics which involve:distribution characteristics of microplastics in sediments and water bodies of typical wetlands,conditions in migration and enrichment,toxicity in creature or environment,effect of adsorption by other pollutants,methods about sampling and identification and the degradation and removal;The research,which could be approximately broken down into three stages induding:the initial stage(2010-2014),the exploration stage(2015-2017),and the development stage(2018-2022),is presently at the stage of the rapid development period,and the research hot topics still focus on the issues such as the distribution,migration,toxicity,detection and treatment of wetland microplastics.It has been showed that the focus of research in the near future is to perfect the standard system for detection and characterization,to explore the characteristics of microplastic pollution in various types of wetland ecosystems that has been disturbed by human activities,to establish a unique risk assessment model,and to conduct the development of microplastic pollution treatment methods.In summary,this study could provide a in-depth knowledge of the development trends of wetland microplastics research for further research direction in this field.