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Purpose <p>Mining exerts a significant influence on the sensitive and fragile environment of the Qinghai-Tibetan plateau. Soil reclamation in mining areas is conducive to promoting mine ecological restoration. An outdoor mesocosm experiment was conducted to investigate the reclamation effect of four kinds of materials and screen the optimal formulation.</p> Methods <p>Orthogonal experiment was set used four kinds of materials, which included modified organic material (1.0, 1.2 and 1.4%), slow-release fertilizer (1.0, 1.2 and 1.4%), microbial inoculum (3, 6 and 9&#xa0;g/m<sup>2</sup>), and straw (0.06, 0.08 and 0.10%). Analysis of variance (ANOVA) and least significant difference (LSD) (<i>p</i> &lt; 0.05) were used to explore correlations between different groups. In order to obtain the optimal ratios, this study adopted principal component analysis to score the nine scenarios.</p> Results <p>The results demonstrated that four materials significantly improved the physical and chemical properties of soil, which available potassium increased by up to 275% and organic carbon increased by up to 1743%. Moreover, the application of these materials promoted plant growth and greatly contributed to the development of microbial diversity.</p> Conclusions <p>The optimal ratio was derived as modified organic material 1.4%, slow-release fertilizer 1.4%, microbial inoculum 3&#xa0;g/m<sup>2</sup>, and straw 0.08%. This study will provide a key technology for the ecological restoration of damaged soils in open-pit mining areas used for construction.</p>

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Optimizing the formulation of soil reconstruction for ecological restoration in mining areas on the Qinghai-Tibetan plateau

  • 期刊论文

  • 发表日期：

    2025年12月17日

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  • Qi Li,
  • Kailu Fan,
  • Yifan Shen,
  • Xinzhi Wu,
  • Pengwei Mou,
  • Zixuan Su,
  • Yuhang Li,
  • Huiyuan Zhang,
  • Linxue Ju,
  • Ningfei Lei,
  • Xiaochao Zhang,
  • Xiangjun Pei

摘要

Purpose

Mining exerts a significant influence on the sensitive and fragile environment of the Qinghai-Tibetan plateau. Soil reclamation in mining areas is conducive to promoting mine ecological restoration. An outdoor mesocosm experiment was conducted to investigate the reclamation effect of four kinds of materials and screen the optimal formulation.

Methods

Orthogonal experiment was set used four kinds of materials, which included modified organic material (1.0, 1.2 and 1.4%), slow-release fertilizer (1.0, 1.2 and 1.4%), microbial inoculum (3, 6 and 9 g/m2), and straw (0.06, 0.08 and 0.10%). Analysis of variance (ANOVA) and least significant difference (LSD) (p < 0.05) were used to explore correlations between different groups. In order to obtain the optimal ratios, this study adopted principal component analysis to score the nine scenarios.

Results

The results demonstrated that four materials significantly improved the physical and chemical properties of soil, which available potassium increased by up to 275% and organic carbon increased by up to 1743%. Moreover, the application of these materials promoted plant growth and greatly contributed to the development of microbial diversity.

Conclusions

The optimal ratio was derived as modified organic material 1.4%, slow-release fertilizer 1.4%, microbial inoculum 3 g/m2, and straw 0.08%. This study will provide a key technology for the ecological restoration of damaged soils in open-pit mining areas used for construction.