226
Species
Stations
A GB (tonnes/ha)
AGN (tonnes/ha)
N itrogen
sequestration
=
ΔAGN/Δt
(tonnes/ha/yr)
1 Year 11 Year 1 Year
11 Year
Avicennia
marina
Muriganga
0.151
39.863
0.0032
(2.14%)
0.6856
(1.72%)
0.0682
Saptamukhi 0.159
42.334
0.0032
(2.02%)
0.6900
(1.63%)
0.0687
Jambu Island 0.313
45.781
0.0065
(2.08%)
0.7325
(1.60%)
0.0726
Lothian
Island
0.313
44.663
0.0065
(2.09%)
0.7414
(1.66%)
0.0735
Sagar Island 0.309
43.284
0.0064
(2.06%)
0.7055
(1.63%)
0.0699
Prentice
Island
0.155
45.004
0.0038
(2.11%)
0.7696
(1.71%)
0.0766
Thakuran
0.533
66.281
0.0116
(2.18%)
1.1135
(1.68%)
0.1102
Dhulibasani 0.357
64.385
0.0078
(2.17%)
1.0108
(1.57%)
0.1003
Chulkathi
0.358
64.224
0.0079
(2.20%)
1.0404
(1.62%)
0.1033
Goashaba
0.366
66.883
0.0077
(2.11%)
1.1303
(1.69%)
0.1123
Matla
0.363
67.991
0.0073
(2.13%)
1.0811
(1.59%)
0.1073
Pirkhali
0.555
70.224
0.0119
(2.14%)
1.1587
(1.65%)
0.1147
Arbesi
0.157
39.112
0.0032
(2.01%)
0.5906
(1.51%)
1.7127
Jhila
0.152
35.668
0.0030
(1.99%)
0.5457
(1.53%)
1.5576
Harinbhanga 0.301
37.885
0.0061
(2.02%)
0.6024
(1.59%)
1.6825
Khatuajhuri 0.151
38.447
0.0030
(2.00%)
0.6036
(1.57%)
1.7005
Chamta
0.148
40.299
0.0029
(1.96%)
0.6045
(1.50%)
1.7732
Chandkhali
0.142
41.326
0.0029
(2.02%)
0.6282
(1.52%)
1.8258
Table 7.8 Nitrogen sequestration by Avicennia marina inhabiting Indian Sundarbans
7 Mangroves: Unique Sinks of Carbon and Nitrogen