Abstract
The fluxes of CO2 and O3 were observed using Bowen ratio method in wheat (Triticum aestivum) field to fi nd out the method for evaluating the amount of ozone absorption based on the plant production. The fluxes of CO2 and O3 were divided by the atmospheric concentration of CO2 and 03 respectively for calculating the deposition velocity of the gases (Kco2 and Ko3). The average value of ratio of deposition velocity (RK; where RK =Ko3/ Kco2) for the observation period was 8.5. It is assumed that the variation of RK by days is caused mainly by the variation in daily average solar radiation, resulting the change in Kco2.
