Ammonia efflux affects accuracy of CO2 emission estimated by alkali- trap method
نویسندگان
چکیده
1 Universität Ulm Institut für Systematische Botanik und Ökologie [email protected] 2 Universität Hohenheim Institut für Bodenkunde und Standortslehre [email protected] and rangeland) in three different climatic regions (arid, semi-arid and humid) from Northern-Central Iran were selected. Top soil samples were incubated for 8 months at 25°C with and without maize litter addition. CO2 emission rates were measured during 1, 3, 5, and 7 days after the beginning of the experiment and afterwards weekly by alkalitrap method. Measurement of carbon and nitrogen in the oven-dried aliquots of alkali solutions by an elemental analyzer (LECO TruSpec) after addition of 0.5 M SrCl2 were performed for selected dates. Cumulative CO2 effluxes obtained by titration were adjusted to the level of elemental analyzer results using linear regressions for both treatments.
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