Microplastic contamination in Chinese topsoil from 1980 to 2050.

IF 8.2 1区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Science of the Total Environment Pub Date : 2024-12-10 Epub Date: 2024-10-23 DOI:10.1016/j.scitotenv.2024.176918

Shuyou Zhang, Jianqiang Sun, Qing Zhou, Xudong Feng, Jie Yang, Kankan Zhao, Anping Zhang, Songhe Zhang, Yijun Yao

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引用次数: 0

Abstract

China's soil is experiencing significant microplastic contamination. We developed a machine-learning model to assess microplastic pollution from 1980 to 2050. Our results showed that the average abundance of microplastics in topsoil increased from 45 items per kilogram of soil in 1980 to 1156 items by 2018, primarily due to industrial growth (39 %), agricultural film usage (30 %), tire wear (17 %), and domestic waste (14 %). During the same period, microplastic levels in cropland rose from 98 to 2401 items per kilogram of soil, and exposure levels for the Chinese population increased from 808 to 3168 items per kilogram. By 2050, a reduction in the use of agricultural films is expected to decrease cropland contamination by half. However, overall levels are anticipated to remain steady due to other persistent sources, indicating a continued spread of microplastics into subterranean environments, water bodies, and human systems. This study highlights China's microplastic challenges and suggests potential global trends, emphasizing the need for increased awareness and intervention worldwide.

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1980 至 2050 年中国表土中的微塑料污染。

中国土壤正在遭受严重的微塑料污染。我们开发了一个机器学习模型来评估 1980 年至 2050 年的微塑料污染情况。结果显示，表层土壤中微塑料的平均丰度从1980年的每公斤土壤45个增加到2018年的1156个，主要原因是工业增长（39%）、农膜使用（30%）、轮胎磨损（17%）和生活垃圾（14%）。同期，耕地中的微塑料含量从每公斤土壤 98 微粒上升到 2401 微粒，中国人口的微塑料暴露水平从每公斤 808 微粒上升到 3168 微粒。到 2050 年，减少农用薄膜的使用预计将使耕地污染减少一半。然而，由于其他持久性来源，预计总体水平将保持稳定，这表明微塑料将继续向地下环境、水体和人体系统扩散。本研究强调了中国面临的微塑料挑战，并提出了潜在的全球趋势，强调了在全球范围内提高意识和加强干预的必要性。

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

Science of the Total Environment 环境科学-环境科学

CiteScore

17.60

自引率

10.20%

发文量

8726

审稿时长

2.4 months

期刊介绍： The Science of the Total Environment is an international journal dedicated to scientific research on the environment and its interaction with humanity. It covers a wide range of disciplines and seeks to publish innovative, hypothesis-driven, and impactful research that explores the entire environment, including the atmosphere, lithosphere, hydrosphere, biosphere, and anthroposphere. The journal's updated Aims & Scope emphasizes the importance of interdisciplinary environmental research with broad impact. Priority is given to studies that advance fundamental understanding and explore the interconnectedness of multiple environmental spheres. Field studies are preferred, while laboratory experiments must demonstrate significant methodological advancements or mechanistic insights with direct relevance to the environment.