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Seedlings of four representative Japanese deciduous broad-leaved forest tree species(Fagus crenata, Quercus serrata, Quercus mongolica var. crispula and Betula platyphylla var. japonica)were exposed to different O3 concentrations in open-top chambers for two growing seasons.The photosynthesis-light response curves (A-light curves) and stomatal conductance were measured \nto estimate the leaf-level cumulative photosynthetic CO2 uptake (∑Pn_est) and POD, respectively. The whole-plant-level ∑Pn_est were highly correlated with the whole-plant dry mass increments over the two growing seasons. Because whole-plant growth is largely determined by the amount of leaf area per plant and net photosynthetic rate per leaf area, this result suggests that leaf-level ∑Pn_est,which was estimated from the monthly A-light curves and hourly PPFD, \ncould reflect the cumulative photosynthetic CO2 uptake of the seedlings per unit leaf area. 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Evaluation of O3 Effects on Cumulative Photosynthetic CO2 Uptake in Seedlings of Four Japanese Deciduous Broad-Leaved Forest Tree Species Based on Stomatal O3 Uptake
http://hdl.handle.net/10069/39364
http://hdl.handle.net/10069/393643c8dc3e7-f17b-4ef5-9f93-3dd8c3489fbf
名前 / ファイル | ライセンス | アクション |
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Forests10_556.pdf (1.9 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2019-08-07 | |||||
タイトル | ||||||
タイトル | Evaluation of O3 Effects on Cumulative Photosynthetic CO2 Uptake in Seedlings of Four Japanese Deciduous Broad-Leaved Forest Tree Species Based on Stomatal O3 Uptake | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Japanese deciduous broad-leaved trees | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Net photosynthetic rate | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Net primary production | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Phytotoxic O3 dose | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Stomatal O3 uptake | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
Yamaguchi, Masahiro
× Yamaguchi, Masahiro× Kinose, Yoshiyuki× Matsumura, Hideyuki× Izuta, Takeshi |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The current level of tropospheric ozone (O3) is expected to reduce the net primary production of forest trees.Here, we evaluated the negative effects of O3 on the photosynthetic CO2 uptake of Japanese forest trees species based on their cumulative stomatal O3 uptake, defined as the phytotoxic O3 dose (POD). Seedlings of four representative Japanese deciduous broad-leaved forest tree species(Fagus crenata, Quercus serrata, Quercus mongolica var. crispula and Betula platyphylla var. japonica)were exposed to different O3 concentrations in open-top chambers for two growing seasons.The photosynthesis-light response curves (A-light curves) and stomatal conductance were measured to estimate the leaf-level cumulative photosynthetic CO2 uptake (∑Pn_est) and POD, respectively. The whole-plant-level ∑Pn_est were highly correlated with the whole-plant dry mass increments over the two growing seasons. Because whole-plant growth is largely determined by the amount of leaf area per plant and net photosynthetic rate per leaf area, this result suggests that leaf-level ∑Pn_est,which was estimated from the monthly A-light curves and hourly PPFD, could reflect the cumulative photosynthetic CO2 uptake of the seedlings per unit leaf area. Although the O3-induced reductions in the leaf-level ∑Pn_est were well explained by POD in all four tree species, species-specific responses of leaf-level ∑Pn_est to POD were observed. In addition, the flux threshold appropriate for the linear regression of the responses of relative leaf-level ∑Pn_est to POD was also species-specific. Therefore, species-specific responses of cumulative photosynthetic CO2 uptake to POD could be used to accurately evaluate O3 impact on the net primary production of deciduous broad-leaved trees. |
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書誌情報 |
Forests 巻 10, 号 7, p. 556, 発行日 2019-07-02 |
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出版者 | ||||||
出版者 | MDPI | |||||
EISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 19994907 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.3390/f10070556 | |||||
権利 | ||||||
権利情報 | c 2019 by the authors.Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Forests, 10(7), art.no.556: 2019 |