Fig. 1From: The inhibitory effect of cadmium and/or mercury on soil enzyme activity, basal respiration, and microbial community structure in coal mine–affected agricultural soilActivities of soil enzymes (including urease, acid phosphatase, dehydrogenase, and catalase), soil basal respiration, and abundances of bacteria and fungi in soils. The error bars show the standard error of three subsamples for each soil sample. Different letters indicate significant differences (p < 0.05, Duncan)Back to article page