Environmental and Ecological Risk Assessment of Trace Metal Contamination in Mangrove Ecosystems: A Case from Zhangjiangkou Mangrove National Nature Reserve, China
Table 5
Geoaccumulation index () values of trace metals in sediments from Zhangjiangkou Mangrove National Nature Reserve.
Station
Cu
Cd
Pb
Cr
Zn
As
Hg
C01
−0.94
−1.74
0.62
−1.95
−0.49
1.15
−2.58
C02
−1.08
−1.91
0.82
0.29
−0.27
1.02
−2.58
C03
−1.16
−1.74
1.00
−1.33
−0.29
1.04
−2.00
C04
−1.05
−2.58
0.82
−1.24
−0.39
1.07
−3.58
C05
−1.07
−2.91
1.07
−1.02
−0.35
1.09
−1.58
C06
−1.29
−2.58
0.62
−2.27
−0.66
0.96
/
C07
−1.13
−2.32
0.61
−1.72
−0.51
1.00
−2.58
C08
−1.10
−2.58
0.78
−1.44
−0.45
1.25
−2.58
C09
−1.17
−2.58
0.72
−1.64
−0.40
0.90
−3.58
C10
−0.97
−2.32
1.00
−1.94
−0.43
0.97
−3.58
C11
−1.01
−2.91
0.72
−1.99
−0.48
1.10
/
C12
−0.96
−2.58
0.81
−2.20
−0.55
0.95
−2.58
C13
−1.49
−2.91
0.96
−2.22
−0.44
1.20
/
C14
−1.09
−2.58
0.69
−1.78
−0.58
1.05
−2.00
C15
−1.19
−0.74
0.78
−2.06
−0.51
1.13
−0.58
C16
−1.19
−2.32
0.82
−2.00
−0.34
0.96
−3.58
C17
−0.84
−2.91
0.75
−1.63
−0.34
1.14
−3.58
DS01
−1.14
−1.74
0.95
−1.94
−0.38
1.18
−2.58
DS02
−0.85
−1.45
1.32
−2.88
−0.43
1.14
−0.78
DS03
−1.29
−2.32
1.20
−2.44
−0.67
1.30
−2.58
DS04
−2.15
−1.45
0.77
−1.84
−0.48
0.40
−3.58
DS05
−1.53
−1.91
0.62
−2.68
−0.62
0.74
−3.58
DS06
−1.40
−3.32
0.77
−2.52
−0.61
0.93
−1.58
DS07
−1.17
−0.66
0.87
−3.46
−0.45
1.42
−3.58
DS08
−1.38
−3.32
1.23
−2.00
−0.51
1.04
−1.26
DS09
−1.27
−2.10
0.92
−3.03
−0.64
1.28
−2.58
DS10
−1.41
−2.91
0.76
−3.03
−0.43
1.12
−2.58
DS11
−1.27
−2.91
1.02
−3.05
−0.51
1.23
−2.00
DS12
−1.16
−2.32
1.01
−1.71
−0.50
1.25
−3.58
Mean
−1.20
−2.30
0.86
−2.03
−0.47
1.07
−2.49
class: 0: none, 1: none to medium, 2: moderate, 3: moderate to strong, 4: strongly polluted, 5: strong to very strong, and 6: very strong. “/”: no data.