Measurements of nitric oxide emissions from forest soils in the Netherlands
article
Nitric oxide (NO) fluxes to the atmosphere were determined from different soil types in coniferous forest and deciduous forest in the Netherlands. Dynamic chambers were used to determine the emission every week throughout a whole year. Forest type and soil texture seem important parameters leading to large differences in fluxes between sites. High fluxes of up to 178 ng rn-2 s-1 were observed in summer in a Douglas Fir forest. In a nearby Beech forest, on the same soil, fluxes up to 83 ng M-2 S-1 were observed. Emissions from clayey soils in a Beech forest were much lower and ranging from 0 to 14 ng m-2 s-'. Besides the important effect of the forest community type and the soil texture on the NO flux, a strong correlation with soil temperature was observed (accounting for up to 70% of the variance). Soil moisture could explain up to 60% of the variance of the NO flux. It seems that an optimum range of intermediate moisture contents exists where high temperatures lead to high emissions.
TNO Identifier
842400
Source
Journal of Geophysical Research(September), pp. 1-20.
Pages
1-20