Analysis on Bacterial Community Structure of Groundwater in Changzhou City

The groundwater was monthly sampled from two underground wells of wastewater treatment plant in Changzhou City during March 2016 to February 2017 to monitor groundwater quality and cultivated bacterial community in water. This study aims at analyzing bacterial community structure shift along with environmental variations. The results showed that the bacterial community structure and its shifts corresponding to different water quality. The number of bacteria in D1 and D2 were significantly different with the seasons. A total of 36 genera were profiled in two wells, the most dominant species was Paracoccus sp. (averagely accounting for 21.62%). However, 4 genera were detected as the most dominant bacteria in D1, whose dominance was 12%, respectively. The RDA analysis showed that NO3- had a positive effect on Pseudomona sp. and Paracoccus sp.. Positive correlations were found between Staphylococcus sp. and NOY. Methylococcus sp. and Acinetobacter sp. had positive correlations with TN. On the contrary, Aeromonas sp., Zoogloea sp., Shigella sp., Flavobacterium sp. and Deinococcus sp. had negetive correlations with NH3-N.