Table 3.

Ecological diversity of microbial communities based on degree of carbon source utilization.

	U	H	D	E	S
CK	5.68 ± 0.26 A∗	3.16 ± 0.03 A	0.95 ± 0.00 A	0.98 ± 0.01 A	25.50 ± 1.04 A
Corn field	3.65 ± 0.45 AB	2.90 ± 0.08 AB	0.93 ± 0.01 AB	1.06 ± 0.04 A	18.23 ± 2.01 BC
Citrus field	4.19 ± 0.74 AB	2.93 ± 0.08 A	0.93 ± 0.01 AB	1.05 ± 0.03 A	19.00 ± 1.99 B
Paddy field	2.51 ± 0.21 B	2.65 ± 0.06 B	0.91 ± 0.01 B	1.11 ± 0.04 A	12.15 ± 1.30 C

^∗The data are means ± standard deviations (13 paddy soil samples, 13 corn field soil samples, 14 citrus soil samples, and 4 CK soil samples). Statistical pairwise multiple comparisons of data homogeneity were carried out by the Tukey test: means with the same letter in the same column are not significantly different at P < 0.05. U, McIntosh index; H, Shannon-Wiener diversity index; D, Simpson’s diversity index; E, Shannon’s evenness index; and S, species richness.