3:30 PM - 4:00 PM
★ [ACG30-18] Global estimation of soil nitrous oxide emission using a semi-empirical model
Keywords:soil, nitrous oxide, model, nitrogen
The preliminary calculation revealed that the total amount of N2O emission was 14 Tg N yr-1, and the monthly flux showed a clear seasonality, and was highest in August and lowest in February. The dry natural land is the major source of N2O emission while the dry cultivated land was the second major source. Latitudinally, the flux was high around 30—40 degreeN and 10 degreeS—10 degreeN. These results were still based on limited data, especially for wet ecosystems, and will be updated in future.