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<p>Microplastics (MPs) contamination in global inland waters has raised concerns recently. However, quantitative research on the abundance of MP in these environments remains limited. Here we compiled a comprehensive dataset of MPs in global inland waters from 5365 observations across 301 publications, revealing a diverse distribution of MP abundance in inland waters, ranging from 0.00 to 4,275,800.70 items m<sup>−3</sup> (mean: 25,255.47 ± 132,808.40 items m<sup>−3</sup>). Human development index, evapotranspiration, cropland, and land surface runoff emerged as the primary factors influencing MPs levels in water. The predicting map showed particularly high MP abundance in China, but also relatively high abundance in Asia, Europe, Africa, and the eastern United States.</p><p>Urgent action is needed to monitor and manage MPs in inland waters, especially the small-sized MPs (&lt;1 mm). Implementing effective strategies to regulate plastic production and waste management is imperative for protecting freshwater ecosystems, particularly in countries with high MP pollution.</p>

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Quantitative assessment on the distribution patterns of microplastics in global inland waters

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年4月30日

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  • Xia Jin,
  • Zimin Li,
  • Josep Peñuelas,
  • Jordi Sardan,
  • Qiqian Wu,
  • Yan Peng,
  • Petr Heděnec,
  • Zhijie Li,
  • Chaoxiang Yuan,
  • Ji Yuan,
  • Zihao Chen,
  • Zemin Zhao,
  • Fuzhong Wu,
  • Kai Yue

摘要

Microplastics (MPs) contamination in global inland waters has raised concerns recently. However, quantitative research on the abundance of MP in these environments remains limited. Here we compiled a comprehensive dataset of MPs in global inland waters from 5365 observations across 301 publications, revealing a diverse distribution of MP abundance in inland waters, ranging from 0.00 to 4,275,800.70 items m−3 (mean: 25,255.47 ± 132,808.40 items m−3). Human development index, evapotranspiration, cropland, and land surface runoff emerged as the primary factors influencing MPs levels in water. The predicting map showed particularly high MP abundance in China, but also relatively high abundance in Asia, Europe, Africa, and the eastern United States.

Urgent action is needed to monitor and manage MPs in inland waters, especially the small-sized MPs (<1 mm). Implementing effective strategies to regulate plastic production and waste management is imperative for protecting freshwater ecosystems, particularly in countries with high MP pollution.