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Modeling of Stomatal Conductance for Estimating Ozone Uptake of Fagus crenata Under Experimentally Enhanced Free-air Ozone Exposure

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/50281

Title: Modeling of Stomatal Conductance for Estimating Ozone Uptake of Fagus crenata Under Experimentally Enhanced Free-air Ozone Exposure
Authors: Hoshika, Yasutomo Browse this author
Watanabe, Makoto Browse this author
Inada, Naoki Browse this author
Koike, Takayoshi Browse this author
Keywords: Fagus crenata
Ozone uptake
Stomatal conductance modeling
Japan
Ozone
Issue Date: Sep-2012
Publisher: Springer Netherlands
Journal Title: Water, Air, & Soil Pollution
Volume: 223
Issue: 7
Start Page: 3893
End Page: 3901
Publisher DOI: 10.1007/s11270-012-1158-9
Abstract: We examined a performance of the multiplicative stomatal conductance model to estimate the stomatal ozone uptake for Fagus crenata. Parameterization of the model was carried out by in-situ measurements in a free-air ozone exposure experiment. The model performed fairly well under ambient conditions, with low ozone concentration. However, the model overestimated stomatal conductance under enhanced ozone condition due to ozone-induced stomatal closure. A revised model that included a parameter representing ozone-induced stomatal closure showed better estimation of ozone uptake. Neglecting ozone-induced stomatal closure induced a 20 % overestimation of the stomatal uptake of ozone. The ozone-induced stomatal closure was closely related to stomatal ozone uptake, rather than AOT40 (accumulated concentrations of ozone exceeding 40 nmol mol^[-1]). Our results suggest that ozone-induced stomatal closure should be implemented to stomatal conductance model for estimating ozone uptake for F. crenata and the implementation will contribute to adequate risk assessments of ozone impacts on F. crenata forests in Japan.
Rights: The final publication is available at www.springerlink.com
Type: article (author version)
URI: http://hdl.handle.net/2115/50281
Appears in Collections:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 星加 康智

 

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