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<p>Clean energy transitions are known to reduce carbon emissions, but their co-benefits for atmospheric heavy metal pollution remain unclear. Here we assess this co-benefit using data from 331 Chinese cities. We find that from 2015 to 2020, the transition reduced atmospheric heavy metal emissions by 258 tonnes, accounting for 6.4% of total reductions during this period. Under a business-as-usual scenario extending to 2060, future reductions could reach 520 tonnes (10.2%). Additional efforts, such as a faster clean energy transition and a radical combination of economic and social pathways, reductions could increase to 1,650 tonnes (30.4%). The co-benefit effects vary across city types, with non-resource-based and comprehensive type I cities showing larger reductions (17.65% and 15.68%) than those in service-based and comprehensive type II cities (7.05% and 8.33%). These findings help monitor clean energy transitions and identify pathways for reducing atmospheric heavy metal pollution in Chinese cities.</p>

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Mitigating atmospheric heavy metal pollution requires added efforts amid rapid clean-energy transitions in Chinese cities

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年3月25日

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  • Guanglei Yang,
  • Guoxing Zhang,
  • Dongqin Cao,
  • Xiaojuan Wang,
  • Fanshuai Hu,
  • Shaowen Yang,
  • Yang Yang,
  • Yunrong Zhang,
  • Xiaobin Zhang,
  • Donglan Zha,
  • Yuli Shan

摘要

Clean energy transitions are known to reduce carbon emissions, but their co-benefits for atmospheric heavy metal pollution remain unclear. Here we assess this co-benefit using data from 331 Chinese cities. We find that from 2015 to 2020, the transition reduced atmospheric heavy metal emissions by 258 tonnes, accounting for 6.4% of total reductions during this period. Under a business-as-usual scenario extending to 2060, future reductions could reach 520 tonnes (10.2%). Additional efforts, such as a faster clean energy transition and a radical combination of economic and social pathways, reductions could increase to 1,650 tonnes (30.4%). The co-benefit effects vary across city types, with non-resource-based and comprehensive type I cities showing larger reductions (17.65% and 15.68%) than those in service-based and comprehensive type II cities (7.05% and 8.33%). These findings help monitor clean energy transitions and identify pathways for reducing atmospheric heavy metal pollution in Chinese cities.