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Simulation of effects of soils, climate and management on N 2 O emission from grasslands Dmitri Chatskikh a, Jørgen E. Olesen a, Jørgen Berntsen a, Kristiina.

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Presentation on theme: "Simulation of effects of soils, climate and management on N 2 O emission from grasslands Dmitri Chatskikh a, Jørgen E. Olesen a, Jørgen Berntsen a, Kristiina."— Presentation transcript:

1 Simulation of effects of soils, climate and management on N 2 O emission from grasslands Dmitri Chatskikh a, Jørgen E. Olesen a, Jørgen Berntsen a, Kristiina Regina b & Sirwan Yamulki c

2 N flow in FASSET

3 Soil typeCut (% of applied N) Grazed (% of applied N) Grazed (% of total N) LowHighLowHighLowHigh Coarse sand Loamy sand Sandy loam Simulated mean N 2 O emission factors as % of N input at low (200 kg N ha -1 ) and high (400 kg N ha -1 ) mineral N application rates for the Foulum climate

4 Table 4. Observed and simulated N 2 O emissions (kg N ha -1 ) SiteExperimentPeriodObservedSimulated JægersborgUNMay-Jul UNJul-Aug MIMay-Jul MIJul-Aug SLMay-Jul SLJul-Aug JokioinenCLMay-Dec CLJan -Dec CLJan -Aug LSJul-Dec LSJan-Dec LSJan - Aug Taw GreenCFFeb-Nov OFFeb-Nov


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