The contents of Cr, Cu, As, Pb and Zn in MLS were significantly exceeded those in MLZ and MLX, which reason was that long-term storage of CG due to weathering and rainwater leaching promoted the activity of harmful heavy metals in CG, some of them were dissolved into the water body or soil with precipitation and infiltration, continued to migrate and enrich, resulting in the increase of heavy metal content in the soil [ 13 , 14 ], and it showed a decreasing trend with the increase distance from CG dump [ 19 , 22 ], aligning with observations by Lu et al.
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Long-term coal gangue dump regulates bacterial communities in different disturbance areas: Evidence mostly from diversity and network complexity.
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