Agriculture Reference
In-Depth Information
as the sum of the standard emissions from the animal and the related
manure production (Equation 13.2, IPCC 1997).
Finally, the is calculated as the sum of direct and
indirect emissions (Equations 13.3-13.5). The emission factors
N-input is for the direct emission from the soil,
is for the mineralisation of organic soils, and
N is for animal production facilities (stables and
pastures). is the area of organic soils (histosols) in rotation. is
manure-N handled, corrected for non , in the form of e.g.
or and the N produced at pasture. is manure-N ex animal.
is N fixed from the atmosphere by legumes (kg N/yr). is crop
residues returned to the soil (kg N/yr). is the synthetic fertiliser-N (kg
N/yr) used. and are the molecular weights for nitrogen and
nitrous oxide. The indirect -emission includes produced from the
atmospheric deposition of and volatilised from spread fertilisers
and produced from the N, which is leached from agricultural
soils and
leached are standard emission factors (IPCC 1997). Both and O
emissions are converted to by multiplication of their
global warming potentials for a 100 year time-horizon: 21 and 310 (Fenger
and Kilde 1994).
3. RESULTS
3.1 Fossil energy use
The national 1996-energy use for the defined crop and animal types are
simulated and distributed over energy sources (Table 13.6 and 13.7).
Thereafter, the simulated values (SI) are, in line with Dalgaard et al. 2001,
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