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<p>Increasing contamination of rice paddies by toxic metal(loid)s from anthropogenic sources threatens food security and public health. In this Perspective, we outline the problem of metal(loid) contamination in paddy soils and propose an activity-centric framework for safeguarding rice production. Approximately 14–17% of croplands exceed safe thresholds for at least one toxic metal(loid), exposing 0.9–1.4 billion people to elevated ecological and health risks. Management strategies that reduce the total mass of toxic metal(loid)s in soils are useful for restoring sites with high metal(loid) concentrations. However, these approaches are expensive and interrupt crop production, making them poorly suited to most in-production rice paddies with low-to-moderate contamination. Activity-centric strategies aim to reduce metal(loid) bioavailability and plant uptake at the soil–water–root–grain continuum, offering a production-compatible alternative. An integrated risk management framework that bridges risk-informed implementation of technologies with localized policy governance to guide regional-scale metal(loid) management is proposed. Further research is needed to develop soil amendment materials and functional synthetic microbial communities that synergistically address metal(loid) contamination and actively contribute to overall soil health and resilience.</p>

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Managing metal(loid) contamination for safe rice production

  • 期刊论文

  • 发表日期：

    2026年6月18日

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  • Liping Fang,
  • Jialin Chi,
  • Kai Liu,
  • Andreas Kappler,
  • Yong-guan Zhu,
  • Jan E. Leach,
  • Sean Fettrow,
  • Qiwang Ran,
  • Kai Chen,
  • Thomas Borch,
  • Fangbai Li

摘要

Increasing contamination of rice paddies by toxic metal(loid)s from anthropogenic sources threatens food security and public health. In this Perspective, we outline the problem of metal(loid) contamination in paddy soils and propose an activity-centric framework for safeguarding rice production. Approximately 14–17% of croplands exceed safe thresholds for at least one toxic metal(loid), exposing 0.9–1.4 billion people to elevated ecological and health risks. Management strategies that reduce the total mass of toxic metal(loid)s in soils are useful for restoring sites with high metal(loid) concentrations. However, these approaches are expensive and interrupt crop production, making them poorly suited to most in-production rice paddies with low-to-moderate contamination. Activity-centric strategies aim to reduce metal(loid) bioavailability and plant uptake at the soil–water–root–grain continuum, offering a production-compatible alternative. An integrated risk management framework that bridges risk-informed implementation of technologies with localized policy governance to guide regional-scale metal(loid) management is proposed. Further research is needed to develop soil amendment materials and functional synthetic microbial communities that synergistically address metal(loid) contamination and actively contribute to overall soil health and resilience.