Development of new method for evaluating the sensitivity of trees to ozone

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K12217
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Environmental impact assessment
• Research Institution: Tokyo University of Agriculture and Technology
• Principal Investigator: IZUTA Takeshi 東京農工大学, (連合)農学研究科(研究院), 教授 (20212946)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: オゾン / 樹木 / 樹木感受性評価

Outline of Final Research Achievements

In the present study, we developed a new method for evaluating the sensitivity of trees to ozone based on the results obtained from short-term ozone-exposure experiment. We developed a new measurement system of net photosynthetic rate and transpiration rate during the exposure of a leaf to ozone for several hours. Net photosynthetic rate of Quercus myrsinifolia and Quercus glauca was not affected, but that of Castanopsis sieboldii and Fagus crenata was reduced by the exposure to ozone at 300 ppb for several hours. These results were in agreement with the results obtained from long-term ozone-exposure experiment for evaluating the sensitivity of trees to ambient levels of ozone. Therefore, it is possible to evaluate the sensitivity of trees to long-term exposure to realistic concentrations of ozone by the new method developed in the present study.

Free Research Field

環境ストレス植物学