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Annex F - Estimated Emissions by Selected Sources and Sinks Associated with Scottish Agriculture
Table : Estimated emissions by selected sources and sinks elements ( KT CO 2 equivalent) associated with Scottish agriculture under various IPCC reporting categories, plus percentage change over period and percentage share of each element in total emissions associated with agriculture, ranked by percentage share of 2005 total.
Emission Source ( Sink) | 1990 | 2005 | % change,
1990 to 2005 | % share of 2005
overall total |
|---|
CO 2 | CH<sub>4</sub> | N 2O | Total | CO 2 | CH<sub>4</sub> | N 2O | Total |
|---|
Land converted to Cropland (L) | 6048.6 | | | 6048.6 | 6561.1 | | | 6561.1 | 8.5% | 44.8% |
|---|
Agricultural soils (A) | | | 4931.0 | 4931.0 | | | 3769.4 | 3769.4 | -23.6% | 25.7% |
|---|
Other cattle enteric (A) | | 1641.8 | | 1641.8 | | 1593.0 | | 1593.0 | -3.0% | 10.9% |
|---|
Sheep enteric (A) | | 990.7 | | 990.7 | | 796.5 | | 796.5 | -19.6% | 5.4% |
|---|
Agricultural fuel use (E) | 550.7 | 1.7 | 61.2 | 613.6 | 588.9 | 1.7 | 65.3 | 655.9 | 6.9% | 4.5% |
|---|
Dairy cattle enteric (A) | | 452.2 | | 452.2 | | 427.8 | | 427.8 | -5.4% | 2.9% |
|---|
Manure solid storage and dry lot (A) | | | 190.5 | 190.5 | | | 186.5 | 186.5 | -2.1% | 1.3% |
|---|
Other cattle wastes (A) | | 154.1 | | 154.1 | | 148.4 | | 148.4 | -3.7% | 1.0% |
|---|
Grassland remaining Grassland (L) | 59.9 | | | 59.9 | 113.6 | | | 113.6 | 89.7% | 0.8% |
|---|
Dairy cattle wastes (A) | | 111.1 | | 111.1 | | 105.0 | | 105.0 | -5.4% | 0.7% |
|---|
Cropland - Liming (A) | 134.5 | | | 134.5 | 71.9 | | | 71.9 | -46.6% | 0.5% |
|---|
Grassland - Liming (A) | 133.8 | | | 133.8 | 69.5 | | | 69.5 | -48.1% | 0.5% |
|---|
Grassland - Biomass Burning (A) | 7.6 | 0.7 | 0.1 | 8.3 | 29.4 | 2.7 | 0.3 | 32.4 | 288.9% | 0.2% |
|---|
Pigs wastes (A) | | 28.5 | | 28.5 | | 29.6 | | 29.6 | 4.0% | 0.2% |
|---|
Sheep goats and deer wastes (A) | | 23.6 | | 23.6 | | 18.9 | | 18.9 | -19.8% | 0.1% |
|---|
Broilers wastes (A) | | 14.4 | | 14.4 | | 16.9 | | 16.9 | 17.7% | 0.1% |
|---|
Pigs enteric (A) | | 14.2 | | 14.2 | | 14.7 | | 14.7 | 3.4% | 0.1% |
|---|
Manure other (A) | | | 18.9 | 18.9 | | | 14.3 | 14.3 | -24.5% | 0.1% |
|---|
Horses enteric (A) | | 5.4 | | 5.4 | | 10.9 | | 10.9 | 103.7% | 0.1% |
|---|
Manure liquid systems (A) | | | 5.9 | 5.9 | | | 5.4 | 5.4 | -8.1% | 0.0% |
|---|
Laying hens wastes (A) | | 5.9 | | 5.9 | | 4.2 | | 4.2 | -29.9% | 0.0% |
|---|
Other poultry wastes (A) | | 4.0 | | 4.0 | | 2.9 | | 2.9 | -26.3% | 0.0% |
|---|
Deer & goats enteric (A) | | 3.9 | | 3.9 | | 2.1 | | 2.1 | -46.2% | 0.0% |
|---|
Horses wastes (A) | | 0.4 | | 0.4 | | 0.8 | | 0.8 | 102.7% | 0.0% |
|---|
Field burning (A) | | 18.3 | 5.4 | 23.7 | | 0.0 | 0.0 | 0.0 | -100.0% | 0.0% |
|---|
Source Total | 6938.4 | 3470.7 | 5213.1 | 15622.2 | 7437.4 | 3176.3 | 4041.2 | 14654.8 | -6.2% | 100.0% |
|---|
Land converted to Grassland (L) | -2320.7 | | | -2320.7 | -2808.8 | | | -2808.8 | 21.0% | 21.5% |
|---|
Cropland remaining Cropland (L) | -78.9 | | | -78.9 | -78.9 | | | -78.9 | 0.0% | 0.6% |
|---|
Land converted to Forest Land (L) | -7547.4 | | | -7547.4 | -10132.7 | | | -10132.7 | 34.3% | 77.4% |
|---|
Harvested wood products (L) | -714.2 | | | -714.2 | -69.0 | | | -69.0 | -90.3% | 0.5% |
|---|
Sink Total | -10661.3 | 0.0 | 0.0 | -10661.3 | -13089.4 | 0.0 | 0.0 | -13089.4 | 22.8% | 100.0% |
|---|
Note: From Pareto 2008. Figures derived from detailed "pivot table" appendix to the Greenhouse Gas Inventories for England, Scotland, Wales and Northern Ireland: 1990 to 2005 (Jackson et al., 2007). Direct comparison with Inventory figures and therefore "Changing Our Ways" (Scottish Executive, 2006) may be hampered by differences in source data (see Jackson et al., 2007: pages v & viii) and by the selective (re)assignment of elements from three IPCC categories: Agriculture (A), Land Use, Land Use Change & Forestry (L) and Energy (E). Similarly, for ease of interpretation of individual elements, sinks and sources are identified and summed separately - but the effect of including sinks (especially forestry) to give a smaller net contribution to the Scottish net total of 54,500Kt should be noted. Approximately 15% of the carbon sequestration flux credited to land converted to forest land is derived from former farmland (pers. comm. CEH). Since different representations of these data may give different impressions, clarity of baselines and definitions is fundamentally important
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