Report - DCE - Nationalt Center for Miljø og Energi

EEA guidebook (EMEP/EEA, 2009) default value for the emission factors for
field burning of agricultural wastes is used.
Emissions of NH3, NOx, CO, NMVOC, SO2, PM, heavy metals, dioxin and
PAH is included under the NFR category 4F. The emission of NH3 from field
burning contributes in 2010 with less than 1 % of the agricultural emission.
Emissions of PM and NMVOC from field burning contributes with 2 % TSP,
4 % PM10, 14 % PM2.5 and 11 % NMVOC of the agricultural emission. The
emission of NOx, CO, SO2, heavy metals and dioxin from field burning contribute
with less than 1 % of the total national emission, while the emission
of PAH contribute with around 2 % of the national emission. From 1989 to
1990 decreases all emissions significantly due to the prohibition, see annex
2C.4.
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Around 3 % of the NMVOC emission originates from the agricultural sector,
which, in the Danish emission inventory, includes emission from arable land
crops and grassland, and field burning of agricultural wastes, see chapter
6.6. Activity data is obtained from Statistics Denmark. The emission factor
for crops and grassland is for land with arable crops is 393 g NMVOC pr ha
and for grassland, 2 120 g NMVOC pr ha (Fenhann & Kilde 1994; Priemé &
Christensen 1991).
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Table 6.18 shows the estimated uncertainties for the pollutants.
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Uncertainties regarding animal production, such as number of animals,
feeding consumption, normative figures etc. are low. Number of the most
important animal categories is estimated by Statistic Denmark and for each
animal category an uncertainty estimate is given. For the large animal
groups such as cattle and swine the uncertainty is very low, while it for the
smaller groups is a little higher. The uncertainty for animals overall is estimated
to 2 %.
The Danish Normative System for animal excretions is based on data from
the Danish Agricultural Advisory Service (DAAS), which is the central office
for all local Danish agricultural advisory services. DAAS engages in a great
deal of research as well as the collection of efficacy reports from Danish
farmers for dairy production, meat production, swine production, etc to optimise
productivity in Danish agriculture. In total, feeding plans from 15-18
% of Danish dairy production, 25-30 % of pig production, 80-90 % of poultry
production and approximately 100 % of fur production are collected annually.
These basic feeding plans are used to develop the standard values of
the “Danish Normative System”.