Modelowanie emisji podtlenku azotu i amoniaku w skali regionalnej oraz w Polsce
The aim of the research was to verify the N2O direct and NH3 emission factors adopted in national inventories, and to estimate the direct and indirect N2O emissions in cultivation systems increasing carbon sequestration. Simulations were performed using the DNDC model for NUTS2 and Poland with the use of twenty-year series of meteorological data. It was found that the simulated direct emission of nitrous oxide for Poland was in line with the adopted emission factor. The simulated ammonia emission was greater than the assumed emission factor. Use in simulations of cultivation systems increasing the sequestration of organic carbon, such as conservation system and conventional system with manure fertilization, increased: surface leaching and runoff of nitrogen as well as direct and indirect N2O emission. The increase of these emissions must be compensated with an allowance increase in the amount of sequestered organic carbon in the soil if the greenhouse gas emissions balance is to be negative.