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Background &amp; aims <p>The soil micro-food web plays a crucial role in facilitating ecological restoration and maintaining ecosystem functionality in post-mining environments. However, the specific influence of reclamation patterns on the structure of soil micro-food web and their trophic transfer efficiency in mining soils remains unclear. Therefore, this study aimed to analyse the specific impacts of reclamation models on the soil micro-food web and elucidate the underlying mechanisms that restores ecosystem functions.</p> Methods <p>We conducted a field experiment at 15 sites across three reclamation patterns—coniferous plantation (CP), broad-leaved plantation (BP), and mixed coniferous-broadleaved plantation (MP)—within the Pingshuo Open-pit Coal Mine in China. Using metagenomic sequencing, we analysed soil micro-food web structures and nutrient transfer efficiencies across various reclamation strategies.</p> Results <p>MP exhibited greater microbial network complexity and higher nutrient transfer efficiency than those of CP and BP. Specifically, MP ecosystems demonstrated considerably enhanced nutrient transfer efficiency among higher trophic-level microorganisms such as protists and nematodes, indicating improved trophic energy flow and resource utilisation within the soil micro-food web. Moreover, reclamation patterns influenced soil nutrient transfer efficiency by modifying soil physicochemical properties, ultimately shaping soil carbon and nitrogen metabolic processes.</p> Conclusion <p>The mixed coniferous-broadleaved plantation enhanced nutrient transfer efficiency within the soil micro-food web, thereby optimising trophic interactions and ecosystem nutrient cycling. Reclamation models can influence C/N metabolism processes via the soil microbial network. Our findings provide a comprehensive understanding of optimizing reclamation strategies and improving ecosystem functions in mining areas.</p>

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Response of soil micro-food web and nutrient transfer efficiency to reclamation strategies in mining area

  • 期刊论文

  • 发表日期：

    2025年7月7日

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  • Peng Gao,
  • Xiujuan Zhang,
  • Hong Zhang,
  • Junjian Li,
  • Chao Su,
  • Yong Liu

摘要

Background & aims

The soil micro-food web plays a crucial role in facilitating ecological restoration and maintaining ecosystem functionality in post-mining environments. However, the specific influence of reclamation patterns on the structure of soil micro-food web and their trophic transfer efficiency in mining soils remains unclear. Therefore, this study aimed to analyse the specific impacts of reclamation models on the soil micro-food web and elucidate the underlying mechanisms that restores ecosystem functions.

Methods

We conducted a field experiment at 15 sites across three reclamation patterns—coniferous plantation (CP), broad-leaved plantation (BP), and mixed coniferous-broadleaved plantation (MP)—within the Pingshuo Open-pit Coal Mine in China. Using metagenomic sequencing, we analysed soil micro-food web structures and nutrient transfer efficiencies across various reclamation strategies.

Results

MP exhibited greater microbial network complexity and higher nutrient transfer efficiency than those of CP and BP. Specifically, MP ecosystems demonstrated considerably enhanced nutrient transfer efficiency among higher trophic-level microorganisms such as protists and nematodes, indicating improved trophic energy flow and resource utilisation within the soil micro-food web. Moreover, reclamation patterns influenced soil nutrient transfer efficiency by modifying soil physicochemical properties, ultimately shaping soil carbon and nitrogen metabolic processes.

Conclusion

The mixed coniferous-broadleaved plantation enhanced nutrient transfer efficiency within the soil micro-food web, thereby optimising trophic interactions and ecosystem nutrient cycling. Reclamation models can influence C/N metabolism processes via the soil microbial network. Our findings provide a comprehensive understanding of optimizing reclamation strategies and improving ecosystem functions in mining areas.