Environmental Engineering Reference
In-Depth Information
Table 5. Correlation analysis between the flux of CO
2
and CH
4
and TC, TN, NH
4
+
-N, NO
3
-
-N at different soil depths
NH
4
+
-N
NO
3
-
-N
TC
TN
Site
GHG
0~10 cm
10~20 cm
0~10 cm
10~20 cm
0~10 cm
10~20 cm
0~10 cm
10~20 cm
CO
2
0.018
0.008
0.122
0.157
0.265
0.195
0.142
0.159
A
CH
4
0.089
0.100
-0.219
-0.245
-0.277
-0.107
-0.263
-0.025
CO
2
-0.563
**
-0.197
-0.543
**
-0.518
**
0.009
-0.046
-0.119
0.133
B
CH
4
0.146
0.087
0.304
0.202
0.119
-0.112
0.128
0.050
-0.555
*
CO
2
0.232
0.162
-0.073
-0.106
-0.302
-0.034
-0.141
C
CH
4
0.048
0.241
0.064
0.042
-0.028
-0.093
-0.078
-0.043
CO
2
0.139
-0.289
-0.223
-0.531
**
-0.075
0.084
0.128
0.339
D
CH
4
-0.228
0.140
-0.180
0.139
-0.356
-0.407
*
-0.536
**
-0.714
**
Table 6. Comparison of the results of relative studies from different countries
CH
4
flux
mg/(m
2
·h)
CO
2
flux mg/(m
2
·h)
Site
Wetland
vegetation
Time
reference
coastal salt marsh
T.chinensis
、
S. salsa,
P.australis
2012.4-2012.12
2.287~331.371
-0.075~0.185
This study
Yellow River
estuary, China
Jiang HH
(2012)
Intertidal zoon
S. salsa
2009.9-2010.7
-12.23~483.94
-0.39~0.48
Yangtze River
estuary, China
P.australis
、
Scirpus
mariqueter
(Wang et al.,
2010)
Intertidal zoon
2005.4-2005.11
144.41~982.34
-0.13
～
0.57
Angelica keiskei,
P.australis, Spartina
alterniflora Loisel
Minjiang River
estuary, China
(Tong et al.,
2009)
Intertidal zoon
2009.1-2009.12
256.0~620.5
0.6
