Diurnal fluxes of CO.sub.2./sub. and N.sub.2./sub.O from cattle-impacted soil and implications for emission estimates

0350245 - BC 2011 RIV CZ eng J - Journal Article
Šimek, Miloslav - Brůček, Petr - Hynšt, Jaroslav
Diurnal fluxes of CO₂ and N₂O from cattle-impacted soil and implications for emission estimates.
Plant, Soil and Environment. Roč. 56, č. 10 (2010), s. 451-457. ISSN 1214-1178. E-ISSN 1805-9368
R&D Projects: GA AV ČR IAA600660605; GA MŠMT LC06066
Grant - others:MŠMT(CZ) 21-1072/2004
Institutional research plan: CEZ:AV0Z60660521
Keywords : greenhouse gas * emission estimates * nitrous oxide
Subject RIV: EH - Ecology, Behaviour
Impact factor: 1.076, year: 2010

Short-term diurnal changes in emissions of CO₂ and N₂O were determined in a cattle overwintering area during three specific periods of the year. Production of both N₂O and CO₂, as determined with gas chambers buried in soil and spatially distributed changed rapidly, and the general course of fluxes of the two gases was different. CO₂ emissions were basically controlled by temperature, and most gas chambers showed the same trends in CO₂ flux, indicating low spatial heterogeneity. In contrast, N₂O emission were much more spatially heterogeneous and each chamber had its own time course of emission; therefore, the relationship between flux and temperature was more complicated for N₂O than CO₂. For estimating gas emissions over long periods, we strongly recommend the use of frequent emission measurements during periods of high gas fluxes.
Permanent Link: http://hdl.handle.net/11104/0190292