Ozone-induced stomatal sluggishness changes carbon and water balance of temperate deciduous forests

摘要: Tropospheric ozone concentrations have increased by 60–100% in the Northern Hemisphere since 19th century. The phytotoxic nature of can impair forest productivity. In addition, affects stomatal functions, both favoring closure and impairing control. Ozone-induced sluggishness, i.e., a delay responses to fluctuating stimuli, has potential change carbon water balance forests. This effect be included models for risk assessment. Here we examine effects ozone-induced sluggishness on assimilation transpiration temperate deciduous forests 2006-2009 combining detailed multi-layer land surface model global atmospheric chemistry model. An analysis results FACE (Free-Air Controlled Exposure) experiments suggested that incorporated into modelling based simple parameter (gmin, minimum conductance) which is used coupled photosynthesis-stomatal Our simulation showed decrease use efficiency, ratio net CO2 transpiration, up 20% when considered, only 5% neglected.