Agriculture is the most important N2O emission source in 2019 contributing 88.7 % of which N2O from agricultural soils accounts for 76.6 %. N2O is emitted as a result of microbial processes in the soil. Substantial emissions also come from drainage water and coastal waters where nitrogen is converted to N2O through bacterial processes. However, the nitrogen converted in these processes originates mainly from the agricultural use of manure and nitrogen fertilisers. The main reason for the decrease of N2O emission excluding LULUCF is due to the agricultural sector, which has decreased with 25.9 % since 1990 caused by legislation to improve the utilisation of nitrogen in manure. Combustion of fuels contributes 7.0 % to the total whereof the N2O emission from transport contributes with 2.5 % to the national total in 2019. Emission from industrial processes decreased significantly in 2004 due to the closure of the only nitric acid plant operating in Denmark and the emission from this emission source is therefore close to zero since then.
N2O emission, 2019
Links to detailed background data for greenhouse gas emissions can be found under "Supporting documentation".