Uptake of NOx in Scots pine.

Abstract

Information on input of acidifying compounds like SO and NO is necessary to understand effects of acidification. The uptake on NO and NO2 respectively was studied on seedlings and shoots of Scots pine ( L.). Experiments were conducted both in laboratory (NO and NO respectively) and in the field (NO) under light and dark conditions. In all three cases there was a linear relationship between the uptake rate and the NO-concentration. The uptake follows a diurnal pattern i.e. the uptake rate was strongly correlated with the stomatal movements. Uptake rates were converted to deposition rate and the results showed that field exposure with NO gave the higher deposition rate.2xPinus sylvestris22x2