Simulating N2O emission from Kobresia humilis Serg. alpine meadow on Tibetan Plateau with the DNDC model

摘要: Field measured N(2)O emissions in two years were used to parameterize and validate a process-based model, DNDC, for an alpine Kobresia humilis meadow on the Tibetan Plateau China. Although this model failed capture fluxes some time periods spring or autumn, modeled results showed overall good performance terms of simulating seasonal variation quantifying annual total emissions. The relative deviation basis was about 12.4% -15.9% years, respectively. data that nitrification contributed 53% production, slightly higher than denitrification. sensitive soil organic content (SOC), pH, temperature, but less precipitation, ammonium nitrate contents. Further modifications suggested focus process freezing thawing as well crop growth sub-model would improve model's emission from meadow.