Seasonal ozone uptake by a warm-temperate mixed deciduous and evergreen broadleaf forest in western Japan estimated by the Penman-Monteith approach combined with a photosynthesis-dependent stomatal model

摘要: Canopy-level stomatal conductance over a warm-temperate mixed deciduous and evergreen broadleaf forest in Japan was estimated by the Penman–Monteith approach, as compensated semi-empirical photosynthesis-dependent model, where photosynthesis, relative humidity, CO2 concentration were assumed to regulate conductance. This using eddy covariance data routine meteorological observations at flux tower site, permits continuous estimation of canopy-level O3 uptake, even when approach is unavailable (i.e. case direct evaporation from soil or wet leaves). Distortion observed between AOT40 exposure index uptake through stomata, peaked April, but with occurring July. Thus, leaf pre-maturation predominant tree species (Quercus serrata) might suppress springtime, highest concentrations observed.