highly significantP < 0.01
Notably, Ca-Cd and Re-Cd showed significant negative correlations with SOM ( P < 0.05), whereas Ex-Cd and OM-Cd exhibited highly significant negative correlations with SOM ( P < 0.01).
Notably, Ca-Cd and Re-Cd showed significant negative correlations with SOM ( P < 0.05), whereas Ex-Cd and OM-Cd exhibited highly significant negative correlations with SOM ( P < 0.01).
However, the organic matter content in both the rhizosphere and bulk soils showed a decreasing trend with increasing Cd concentration, though not significantly (Table 2 ).