Geoscience Reference
In-Depth Information
Table 1.10 Reservoirs and fluxes of carbon as CO
2
in the biosphere in a model of global carbon
dioxide cycle (MGCDC) of the global biogeochemical cycle of carbon dioxide shown in Fig.
1.30
CO
2
reservoirs and
fl
uxes
Identi
er in
the model
Average estimate of the reservoir
(10
9
ux (10
9
t) and
fl
t/year)
Carbon
Atmosphere
C
A
650
750
-
Photic layer of the ocean
C
U
580
1,020
-
Deep layers of the ocean
C
L
34,500
-
37,890
Soil humus
C
S
1,500
3,000
-
Emission due to burning
Vegetation
H
8
6.9
Fossil fuel
H
1
3.6
Desorption
H
2
97.08
Sorption
H
3
100
Rock weathering
H
4
0.04
Volcanic emanations
H
5
2.7
H
6
Assimilation by land vegetation
224.4
Respiration
Plants
H
7
50
59.3
-
People
H
10
0.7
Animals
H
11
4.1
Emission
Decomposed soil humus
H
9
139.5
Plants
'
roots
H
15
56.1
Vital functions
Population
H
12
0.3
Animals
H
13
3.1
Vegetation decay
H
14
31.5
50
-
Sedimentation to bottom deposits
H
16
0.1
0.2
-
H
17
Solution of marine sediments
0.1
Decomposition of detritus
Photic layer
H
22
35
Deep layers of the ocean
H
18
5
Uplifting with deep waters
H
19
45
(continued)
Search WWH ::
Custom Search