Tree Physiological Ecology under Elevated Ozone and CO<sub>2</sub>

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  • Watanabe Makoto
    Department of Environmental and Natural Resource Sciences, Tokyo University of Agriculture and Technology

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  • オゾンおよび高濃度CO<sub>2</sub>に対する樹木の生理生態学的応答
  • オゾンおよび高濃度CO₂に対する樹木の生理生態学的応答
  • オゾン オヨビ コウノウド CO ₂ ニ タイスル ジュモク ノ セイリ セイタイガクテキ オウトウ

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<p>It is important to consider human activity-induced changes in atmospheric environments for maintaining the good health conditions of trees in the forests. Collaborators and the author have studied the tree responses to elevated ozone and CO2. The overviews of these studies are presented in this review. The mechanisms of the photosynthetic response, risk assessment of the ozone impact based on an experimental study, and canopy level photosynthetic response with a free-air ozone fumigation experiment are described as the ozone effects on trees. Regarding the elevated CO2 effects, the growth and photosynthetic responses of the hybrid larch F1, a promising afforestation tree species, and combined effects of the ozone and elevated CO2 are presented.</p>

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