Table 2 Atmospheric PAH concentrations at different areas (inside, outside and edge of the bamboo forest) (ng·m⁻³).

Weather	Sites	BbF	BkF	BaP	BahA	IcdP	BghiP	T_air
Sunny day	inside	0.18 ± 0.02d	0.16 ± 0.02d	0.07 ± 0.01d	0.01 ± 0.00d	0.08 ± 0.00e	0.09 ± 0.00c	0.59 ± 0.03d
	outside	0.30 ± 0.02c	0.23 ± 0.01c	0.12 ± 0.01c	0.03 ± 0.00d	0.18 ± 0.00c	0.18 ± 0.04b	1.04 ± 0.01c
	edge	0.29 ± 0.11c	0.25 ± 0.05c	0.11 ± 0.03c	0.02 ± 0.00d	0.12 ± 0.00d	0.12 ± 0.01bc	0.91 ± 0.01c
Hazy day	inside	5.38 ± 0.66ab	1.90 ± 0.21b	0.67 ± 0.05b	0.32 ± 0.01b	3.24 ± 0.28a	1.40 ± 0.11a	12.91 ± 0.65b
	outside	6.10 ± 0.22a	2.25 ± 0.16a	0.80 ± 0.05a	0.38 ± 0.01a	3.34 ± 0.03a	1.46 ± 0.00a	14.44 ± 0.86a
	edge	5.18 ± 0.03b	1.86 ± 0.085b	0.68 ± 0.01b	0.20 ± 0.05c	3.05 ± 0.07b	1.30 ± 0.03a	12.27 ± 0.54b
	P	<0.0001	<0.0001	<0.0001	<0.0001	<0.0001	<0.0001	<0.0001

Each value is the mean ± SE. Values followed by the same letter in the same column are not significantly different at the P > 0.05 level according to Tukey’s test. BbF, Benzo b fluoranthrene; BkF, Benzo k fluoranthrene; BaP, benzo a pyrene; BahA, DiBenz (a,h) anthracene; IcdP, Indeno (1,2,3-c,d) pyrene; BghiP, Benzo (g,h,i) perylene; T_air, the total content of mainly PAH in air; Inside, at the inside of P. edulis forest land; Outside, at the outside of P. edulis forest land; Edge, at the edge of P. edulis forest land.

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