Topic modeling discovers trending topics in global research on the ecosystem impacts of microplastics.

IF 3.2 3区环境科学与生态学 Q3 ENGINEERING, ENVIRONMENTAL Environmental Geochemistry and Health Pub Date : 2024-09-24 DOI:10.1007/s10653-024-02218-6

Kailin Gong, Shuangqing Hu, Wei Zhang, Cheng Peng, Jiaqi Tan

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Abstract

The ecological threats of microplastics (MPs) have sparked research worldwide. However, changes in the topics of MP research over time and space have not been evaluated quantitatively, making it difficult to identify the next frontiers. Here, we apply topic modeling to assess global spatiotemporal dynamics of MP research. We identified nine leading topics in current MP research. Over time, MP research topics have switched from aquatic to terrestrial ecosystems, from distribution to fate, from ingestion to toxicology, and from physiological toxicity to cytotoxicity and genotoxicity. In most of the nine leading topics, a disproportionate amount of independent and collaborative research activity was conducted in and between a few developed countries which is detrimental to understanding the environmental fates of MPs in a global context. This review recognizes the urgent need for more attention to emerging topics in MP research, particularly in regions that are heavily impacted but currently overlooked.

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主题建模发现了微塑料对生态系统影响全球研究的趋势主题。

微塑料（MPs）对生态环境的威胁引发了全球范围内的研究。然而，人们尚未对微塑料研究课题随时间和空间的变化进行定量评估，因此很难确定下一个研究前沿。在此，我们采用课题建模的方法来评估 MP 研究的全球时空动态。我们确定了当前 MP 研究中的九个主要课题。随着时间的推移，MP 研究课题已从水生生态系统转向陆生生态系统，从分布转向归宿，从摄食转向毒理学，从生理毒性转向细胞毒性和遗传毒性。在这九个主要研究课题中，大部分独立研究和合作研究活动都是在少数几个发达国家内部或之间进行的，这不利于了解全球范围内主要污染物的环境归宿。本综述认识到，迫切需要更多地关注多溴联苯醚研究中的新课题，特别是在受影响严重但目前被忽视的地区。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Environmental Geochemistry and Health 环境科学-工程：环境

CiteScore

8.00

自引率

4.80%

发文量

279

审稿时长

4.2 months

期刊介绍： Environmental Geochemistry and Health publishes original research papers and review papers across the broad field of environmental geochemistry. Environmental geochemistry and health establishes and explains links between the natural or disturbed chemical composition of the earth’s surface and the health of plants, animals and people. Beneficial elements regulate or promote enzymatic and hormonal activity whereas other elements may be toxic. Bedrock geochemistry controls the composition of soil and hence that of water and vegetation. Environmental issues, such as pollution, arising from the extraction and use of mineral resources, are discussed. The effects of contaminants introduced into the earth’s geochemical systems are examined. Geochemical surveys of soil, water and plants show how major and trace elements are distributed geographically. Associated epidemiological studies reveal the possibility of causal links between the natural or disturbed geochemical environment and disease. Experimental research illuminates the nature or consequences of natural or disturbed geochemical processes. The journal particularly welcomes novel research linking environmental geochemistry and health issues on such topics as: heavy metals (including mercury), persistent organic pollutants (POPs), and mixed chemicals emitted through human activities, such as uncontrolled recycling of electronic-waste; waste recycling; surface-atmospheric interaction processes (natural and anthropogenic emissions, vertical transport, deposition, and physical-chemical interaction) of gases and aerosols; phytoremediation/restoration of contaminated sites; food contamination and safety; environmental effects of medicines; effects and toxicity of mixed pollutants; speciation of heavy metals/metalloids; effects of mining; disturbed geochemistry from human behavior, natural or man-made hazards; particle and nanoparticle toxicology; risk and the vulnerability of populations, etc.