Soil-emitted N2O contributes to two-thirds of global N2O emissions,and is sensitive to climate change.We used DayCent model to project soil N2O emissions in broad-leaved Korean pine mixed forest,ChangBai Mountain under various climate change scenarios.Results indicated that N deposition is the dominant stimulant for soil N2O emission,warming and increased precipitation increase soil N2O emission to a lesser degree,while doubled atmospheric CO2 concentration decreases soil N2O emission.Our results also showed that increased temperature and precipitation together have the largest positive interactive effect on soil N2O emission while simultaneously increasing N deposition and atmospheric CO2 concentration gives the largest negative interactive effect.Uncertainty about the effect of climate change on soil C-N cycling still exists,and long-term field experiments are needed to fill these knowledge gaps and to help improve model projections.