Comparison of CO2, CH4 and N2O soil-atmosphere exchange measured in static chambers with cavity ring-down spectroscopy and gas chromatography
A laboratory and field experiment compared fluxes of CO2, CH4 and N2O measured with cavity ring-downspectroscopy (CRDS) and gas chromatography (GC). The comparison between CRDS and GC showed thataverage CO2 fluxes were significantly higher for CRDS in both the laboratory and field, but the same experimental treatments effects were detected for both techniques. Compared to CRDS, the GC technique was severely limited in detecting CH4 fluxes in both the laboratory and field.