highly significantp < 0.01
Relationship between soil microbial communities and physicochemical properties/enzyme activities Correlation analysis between the top 20 genera and physicochemical properties revealed the following: for bacteria ( Figure 6A ), AK showed a highly significant positive correlation with Blastococcus ( p < 0.01) and significant positive correlations with Rubrobacter, unclassified_c_Actinobacteria, Pseudonocardia, norank_f_67-14, Nocardioides , and Skermanella ( p < 0.05), but a significant negative correlation with Sphingomonas .