Table 1 |
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C stocks, annual harvest and substitution averaged over 300 years |
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Equation 3 |
Cecosystem |
Cproducts |
ΔCecosystem (300) |
Substitutionproduucts (300) |
Substitutionenergy (300) |
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System |
Average C stock in ecosystem [t C ha-1] |
Average C stock in products [t C ha-1] |
Average annual harvest [t C ha-1 yr-1] |
Average annual substitution in products [t C ha-1 yr-1] |
Average annual substitution in energy [t C ha-1 yr-1] |
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|
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|
high |
medium |
low |
high |
medium |
low |
high |
medium |
low |
high |
medium |
low |
high |
medium |
low |
|
|
|
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Forestry |
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|
Picea, timber |
217 |
191 |
166 |
108 |
93 |
77 |
2.3 |
1.96 |
1.6 |
0.19 |
0.16 |
0.13 |
0.94 |
0.81 |
0.67 |
|
Picea, energy |
249 |
217 |
187 |
59 |
51 |
42 |
1.9 |
1.62 |
1.3 |
0 |
0 |
0 |
0.87 |
0.74 |
0.60 |
|
Fagus, timber |
232 |
216 |
200 |
50 |
46 |
43 |
1.9 |
1.76 |
1.6 |
0.04 |
0.04 |
0.04 |
0.88 |
0.82 |
0.76 |
|
Fagus, |
399 |
372 |
345 |
28 |
26 |
24 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
conservation |
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Cropland |
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|
Hardwood |
158.5 |
27.9 |
1.09 |
0.04 |
0.48 |
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afforestation |
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|
Populus, energy |
81.1 |
15.0 |
7.57 |
0 |
4.23 |
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|
Populus, pulp |
86.3 |
125.1 |
6.81 |
1.29 - 9.94 |
3.19 |
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Triticum, energy |
21.5 |
12.1 |
6.09 |
0 |
2.96 |
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Triticum, food + energy |
21.5 |
6.1 |
6.09 |
0 |
1.84 |
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Triticum, food grains |
42.2 |
0 |
3.04 |
0 |
0 |
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The allocation of C to the various product pools, mean residence times and assumptions about reuse and recycling are given in Tables 1 and 2. High, medium and low represent different site indices of productivity for the forestry options |
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|
Böttcher et al. Carbon Balance and Management 2012 7:5 doi:10.1186/1750-0680-7-5 |
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