Effects of Different Water Seasons on the Residual Characteristics and Ecological Risk of Polycyclic Aromatic Hydrocarbons in Sediments from Changdang Lake, China

Table 4

Correlation coefficients among environmental indexes, PAHs and RDA ordination axes.

Environmental parameters and PAHs	Axis 1	Axis 2	Axis 3	Axis 4
T	−0.9168	0.1971	−0.0032	−0.0100
DO	−0.1480	0.4435	−0.1041	−0.0849
COND	−0.0670	−0.4215	−0.0379	0.0119
Eh	−0.4481	0.4787	0.1015	0.0695
pH	0.4283	0.0485	−0.1642	−0.0993
Nap	−0.9123	0.2484	0.1718	0.1317
Ace	0.8275	−0.1742	−0.0995	−0.0572
Flu	0.5027	−0.2518	0.2936	0.1881
Phe	0.7625	0.1703	0.1589	0.1373
Ant	−0.1376	0.0238	−0.4362	−0.4289
Fla	0.4212	−0.0613	−0.4515	−0.0190
Pyr	0.4617	−0.0883	−0.1105	−0.2645
BaA	0.5113	0.4609	−0.2460	0.4079
Chr	0.6575	0.1510	−0.6108	−0.2567
BbF	0.9120	0.0016	−0.0825	0.0379
BkF	0.5064	0.4055	−0.5969	0.4309
BaP	0.5176	0.2502	0.2251	0.6458
DahA	0.9604	0.0891	−0.1500	0.0031
BghiP	0.7529	−0.0046	0.0493	−0.1962