DIKVÄVEOXIDPRODUKTION OCH EMISSION FRÅN VÅTMARKER, Nitrous Oxide Production and Emission
The concentration of nitrous oxide in the atmosphere increases with 0.25 % per year. Nitrous oxide degrades ozone and it also increases the green-house effect. Many biological processes can produce nitrous oxide. The three most important processes are nitrification, denitrification and dissimilatory ammonium production. These biological processes are of importance in development of systems for decreasing the transportation of nitrogen to the aquatic system. In some cases a wrong process can dominate the nitrate reduction system leading to that the whole system becomes a source of nitrous oxide. In order to decrease the emission from these systems more data over data over the production, emission and regulating factors has to be generated. This article summarizes the mechanism for a biological production of nitrous oxide and makes an attempt to calculate the contribution to the total Swedish emission of nitrous oxide from different soils.