highly significantp < 0.001
Correlation between Soil Fungal Communities and Soil Properties in Grasslands of Mining Regions Exhibiting Varying Levels of Restoration The correlation analysis between soil fungi and soil physicochemical factors in the grasslands across various restoration stages levels in the Qianmalong mining area indicates, at the phylum level, a significant negative correlation between unclassified_k_Fungi and SOC and NO 3 -N ( p < 0.05), while Olpidiomycota demonstrated a highly significant positive relationship with SOC ( p < 0.001) and a significant positive correlation with TN and NO 3 -N ( p < 0.05) ( Figure 14 a).