Fig. 4From: Earthworms and rice straw enhanced soil bacterial diversity and promoted the degradation of phenanthreneCorrelation between remained phenanthrene concentration in the soil and the soil bacteria 16S rRNA genes and bacteria Shannon index. Remained phenanthrene concentration had a significant correlation with the soil bacteria 16S rRNA genes (r2 = -07795, p < 0.001) and bacterial Shannon index (r2 = -0.8807, p < 0.001)Back to article page