The Variations in the Soil Enzyme Activity, Protein Expression, Microbial Biomass, and Community Structure of Soil Contaminated by Heavy Metals

Table 3

The Shannon diversity index for the soil samples contaminated by heavy metals.

Distance	Soil bacteria	Soil actinomycetes
CK	3.11 ± 0.11^a	0.52 ± 0.02^a
800 m	2.91 ± 0.12^b	0.40 ± 0.03^b
400 m	2.90 ± 0.07^b	0.35 ± 0.01^c
200 m	2.48 ± 0.08^c	0.23 ± 0.02^d

Note: values presented in the table are the mean ± standard deviation (𝑛=3).
Values in each column followed by different letters are significantly different (𝑃<0.05).