Table 9 |
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|
Sources of uncertainty and associated data. |
||||
|
Source of Uncertainty |
Specific Factor |
Years |
Relevant products |
90% CI |
|
|
||||
|
Conversion factors |
mbf:ccf |
1906-1979 |
Timber products |
± 30% |
|
mbf:ccf |
1980-2009 |
Timber products |
± 15% |
|
|
ccf:MgC |
1906-2009 |
Primary products |
± 5% |
|
|
Reported harvest |
Harvest in mbf |
1906-1945 |
Timber products |
± 30% |
|
Harvest in mbf |
1946-1979 |
Timber products |
± 20% |
|
|
Harvest in mbf or ccf |
1980-2009 |
Timber products |
± 15% |
|
|
Product distribution |
Roundwood to softwood sawtimber |
1906-1979 |
Timber products |
± 30% |
|
Roundwood to softwood sawtimber |
1980-2009 |
Timber products |
± 15% |
|
|
Softwood sawtimber to lumber |
1906-1949 |
Timber products |
± 30% |
|
|
Softwood sawtimber to lumber |
1950-1979 |
Timber products |
± 20% |
|
|
Softwood sawtimber to lumber |
1980-2009 |
Timber products |
± 15% |
|
|
Lumber going to new housing |
1906-2009 |
Primary products |
± 15% |
|
|
Panels going to new housing |
1906-2009 |
Primary products |
± 15% |
|
|
Residues going to pulp |
1906-2009 |
Primary products |
± 15% |
|
|
Product decay |
Product half-life or storage factor |
1906-2009 |
All end-use |
± 15% |
|
Fraction of discards to landfills |
1906-2009 |
Discarded |
± 15% |
|
|
Landfill decay limits |
1906-2009 |
Landfilled |
± 15% |
|
|
Landfill half-life |
1906-2009 |
Landfilled |
± 15% |
|
|
|
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|
Stockmann et al. Carbon Balance and Management 2012 7:1 doi:10.1186/1750-0680-7-1 |
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