Microplastics in China’s surface water systems: Distribution, driving forces and ecological risk

IF 12.2 1区 环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL
Xufei Liu , Lin Zhang , Yaqing Du , Xue Yang , Xuefei He , Jiasen Zhang , Bokun Jia
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Abstract

Comprehensively understanding the distribution, driving forces and ecological risk of microplastics (MPs) in China’s surface water systems is crucial for future prevention and control of MPs pollution, particularly in the context of regional differences. Nevertheless, traditionally localized investigation and the limited MPs data availability hinder more comprehensive estimation of MPs pollution in surface water systems of China. This study presents a robust dataset, which consists of 14285 samples from 32 provincial districts, describing the MPs pollution characteristics using a data mining method combined with a machine learning model. The results show that the developed model has high accuracy in predicting the abundance, colors, shapes, and polymer types of MPs, with the coefficient of determination (R2) ranging from 0.825 to 0.978. MPs abundance varied greatly in China’s surface water systems, ranging over 1–5 orders of magnitude due to the complex influence of anthropogenic activities and natural conditions. Human activities and natural conditions mutually impact the dynamics of MPs in China’s surface water systems. Watersheds in almost all provinces of China are contaminated by high and extremely high ecological risk levels, highlighting the urgency for sustainable MPs management.

Abstract Image

中国地表水系统中的微塑料:分布、驱动力和生态风险
全面了解中国地表水系统中微塑料(MPs)的分布、驱动因素和生态风险,对于未来预防和控制MPs污染至关重要,特别是在区域差异的背景下。然而,传统的本地化调查和有限的MPs数据可用性阻碍了对中国地表水系统MPs污染的更全面估计。本研究提出了一个强大的数据集,该数据集由来自32个省区的14285个样本组成,使用数据挖掘方法结合机器学习模型描述了MPs污染特征。结果表明,该模型对MPs的丰度、颜色、形状和聚合物类型的预测具有较高的准确性,其决定系数(R2)在0.825 ~ 0.978之间。由于人类活动和自然条件的复杂影响,中国地表水系统的MPs丰度变化很大,范围超过1-5个数量级。人类活动和自然条件相互影响着中国地表水系统MPs的动态。中国几乎所有省份的流域都受到高和极高生态风险水平的污染,这凸显了可持续MPs管理的紧迫性。
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来源期刊
Journal of Hazardous Materials
Journal of Hazardous Materials 工程技术-工程:环境
CiteScore
25.40
自引率
5.90%
发文量
3059
审稿时长
58 days
期刊介绍: The Journal of Hazardous Materials serves as a global platform for promoting cutting-edge research in the field of Environmental Science and Engineering. Our publication features a wide range of articles, including full-length research papers, review articles, and perspectives, with the aim of enhancing our understanding of the dangers and risks associated with various materials concerning public health and the environment. It is important to note that the term "environmental contaminants" refers specifically to substances that pose hazardous effects through contamination, while excluding those that do not have such impacts on the environment or human health. Moreover, we emphasize the distinction between wastes and hazardous materials in order to provide further clarity on the scope of the journal. We have a keen interest in exploring specific compounds and microbial agents that have adverse effects on the environment.
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