Denmark's National Inventory Report 2005 - Submitted under the ...

stock production. The result of an active environmental policy is a decrease in the N-excretion and
emission per produced animal, which has reduced the overall emission of GHG.
From 1990 to 2003 there is only a slight reduction in the total CH 4 emission. The emission from
enteric fermentation has decreased due to a reduced number of cattle. On the other hand, the
emission from manure management has increased due to a change towards more slurry based stable
systems, which has a higher emission factor than systems with solid manure. By coincidence
the decrease and the increase have a size as to balance, so the trend for CH 4 emissions from 1990 to
2003 has decreased less than 5%.
140
Gg CO2 eqv
16000
14000
12000
10000
8000
6000
4000
2000
0
1985
1987
1989
1991
Figure 6.1 Danish greenhouse gas emissions 1990 – 2003
1993
1995
1997
1999
2001
2003
N2O - Agricultural soils
N2O - manure management
CH4 - Enteric fermentation
CH4 - Manure management
6.1.1 References – sources of information
The calculations of the emissions are based on methods described in the IPCC Reference Manual
(IPCC, 1996) and the Good Practice Guidance (IPCC, 2000).
Activity data and emission factors are collected and discussed in corporation with specialists and
researchers at different institutes such as the Danish Institute of Agricultural Sciences, Statistics
Denmark, the Danish Agricultural Advisory Centre, the Danish Plant Directorate and the Danish
Environmental Protection Agency. In this way both data and methods will be evaluated continuously
according to the latest knowledge and information.