TABLE 3.

The dominant bacteria (relative abundance >10%) in PM_2.5 samples correlated with the potential ecological function.

Potential species	Ecological role	References
Exiguobacterium aurantiacum	Organic degradation	Jeswani and Mukherji, 2013
Citrobacter freundii	Nitrate reduction	Li et al., 2015
Pseudomonas grimontii	Denitrification	Cai et al., 2010
Acinetobacter junii	Opportunistic pathogens	Nemec et al., 2016
	Nitrification/denitrification	Ren et al., 2014
Pseudomonas putida	Organic degradation	Gomes et al., 2005
	Ice nuclei	Lee et al., 1995
Pseudomonas protegens	Plant protection	Ramette et al., 2011
Ralstonia pickettii	Organic degradation	Kahng et al., 2000
Comamonas testosteroni	Organic degradation	Hollender et al., 1997