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<p>The exploitation and utilization of uranium (U) resources can lead to the release of radioactive nuclides and associated heavy metals into the surrounding environment, particularly in soils. In this study, a field investigation was conducted to analyze radionuclide and heavy metal concentrations as well as microbial diversity in soils contaminated by radioactivity near a uranium mining site in Ningxia, China. Results showed that soil uranium concentrations ranged from 84.15 to 248.78&#xa0;mg·kg<sup>− 1</sup>, exhibiting significant spatial heterogeneity. The highest fungal OTU count was observed at site which had the highest uranium concentration, suggesting potential adaptive tolerance of fungi to elevated U levels. The fungal phylum Rozellomycota showed a statistically significant positive correlation with uranium concentration (<i>P</i> &lt; 0.05), indicating its potential utility as a bioindicator for uranium contamination. Functional analysis revealed that bacterial communities were predominantly involved in metabolic pathways related to uranium reduction. These findings provide insight into the ecological consequences of uranium mining on soil ecosystems and establish a scientific basis for future development of soil bioremediation strategies.</p>

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Microbial community characteristics and response mechanisms to soil environments around a uranium mine

  • 期刊论文

  • 发表日期：

    2025年12月23日

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  • Wenjie Ma,
  • Ling Wang,
  • Bo Zhang,
  • Yujuan Zhou,
  • Zhijuan Dou,
  • Jinli Pan,
  • Lingling Xu,
  • Jingying Chen,
  • Bai Gao

摘要

The exploitation and utilization of uranium (U) resources can lead to the release of radioactive nuclides and associated heavy metals into the surrounding environment, particularly in soils. In this study, a field investigation was conducted to analyze radionuclide and heavy metal concentrations as well as microbial diversity in soils contaminated by radioactivity near a uranium mining site in Ningxia, China. Results showed that soil uranium concentrations ranged from 84.15 to 248.78 mg·kg− 1, exhibiting significant spatial heterogeneity. The highest fungal OTU count was observed at site which had the highest uranium concentration, suggesting potential adaptive tolerance of fungi to elevated U levels. The fungal phylum Rozellomycota showed a statistically significant positive correlation with uranium concentration (P < 0.05), indicating its potential utility as a bioindicator for uranium contamination. Functional analysis revealed that bacterial communities were predominantly involved in metabolic pathways related to uranium reduction. These findings provide insight into the ecological consequences of uranium mining on soil ecosystems and establish a scientific basis for future development of soil bioremediation strategies.