Agriculture Reference
In-Depth Information
TABLE 4:
Use of emergy per functional unit for the three systems: the case, M-Low and
M-High. See Table A3 and Table A4 for notes with details for each item.
Unit
Case
(Unit)
M-
Low
(Unit)
M-High
(Unit)
UEV
(seJ/
unit)
Case
emergy
flow
(× 10
14
seJ)
M-Low
emergy
flow
(× 10
14
seJ)
M-High
emergy
flow
(× 10
14
seJ)
LOCAL RENEWABLE FLOWS (R)
1
Sun
J
9.7 ×
10
13
1.4 ×
10
14
6.6 ×
10
13
1.0
a
1.0
1.4
0.7
2
Evapotranspi-
ration
g
3.0 ×
10
10
4.3 ×
10
10
2.1 ×
10
10
1.5 ×
10
5b
44.0
62.6
29.8
3
Wind
J
3.9 ×
10
11
5.5 ×
10
11
2.6 ×
10
11
2.5 ×
10
3c
9.7
13.8
6.5
4
Geo-thermal
heat
J
9.0 ×
10
10
1.3 ×
10
11
6.1 ×
10
10
1.2 ×
10
4b
10.8
15.4
7.3
SUM (excluding sun and
wind)
54.8
78.0
37.1
PURCHASED MATERIALS (M)
Cultivation Phase
Miscellaneous materials
5
Diesel, fields
J
4.0 ×
10
10
2.7 ×
10
10
1.5 ×
10
10
1.8 ×
10
5d
73.0
48.9
27.4
6
Lubricant and
grease
J
1.9 ×
10
9
1.1 ×
10
9
5.7 ×
10
8
1.8 ×
10
5d
3.5
2.1
1.0
7
LPG
J
9.1 ×
10
8
6.6 ×
10
9
2.3 ×
10
9
1.7 ×
10
5d
1.6
11.3
3.8
8
Fleece and
propagation
tray
g
8.8 ×
10
3
1.9 ×
10
5
9.8 ×
10
4
8.9 ×
10
9e
0.8
16.7
8.7
9
Electricity
J
1.6 ×
10
10
3.8 ×
10
9
3.8 ×
10
9
2.9 ×
10
5f
45.4
10.9
10.9
10
Seedlings
pcs
0.0
3.2 ×
10
5
1.8 ×
10
5
9.6 ×
10
9g
0.0
31.0
17.0
11
Seed
g
2.1 ×
10
4
2.9 ×
10
4
1.3 ×
10
4
1.5 ×
10
9h
0.3
0.4
0.2
12
Potato seeds
g
1.1 ×
10
6
3.1 ×
10
6
1.3 ×
10
6
2.9 ×
10
9i
30.1
89.4
37.3
SUM
154.6
210.7
106.3
