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高緯度北極ツンドラにおける優占種3種の光合成特性―改良型チャンバーを用いた測定試験―
http://hdl.handle.net/11078/422
http://hdl.handle.net/11078/4225665c6e9-95b7-4ee5-bfcf-ff92f0b063ed
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
11_2016_13-20.pdf (841.9 kB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||||||
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| 公開日 | 2017-05-11 | |||||||||
| タイトル | ||||||||||
| タイトル | 高緯度北極ツンドラにおける優占種3種の光合成特性―改良型チャンバーを用いた測定試験― | |||||||||
| 言語 | ja | |||||||||
| 言語 | ||||||||||
| 言語 | jpn | |||||||||
| キーワード | ||||||||||
| 主題 | 高緯度北極ツンドラ | |||||||||
| キーワード | ||||||||||
| 主題 | 維管束植物優占種 | |||||||||
| キーワード | ||||||||||
| 主題 | 光合成のCO2濃度応答特性 | |||||||||
| 資源タイプ | ||||||||||
| 資源タイプ | departmental bulletin paper | |||||||||
| 英訳タイトル | ||||||||||
| その他のタイトル | Photosynthetic Responses of Three Dominant Plants in a High Arctic Tundra Ecosystem: A Measurement Test Using a Portable Photosynthesis System and an Improved Chamber | |||||||||
| 著者 |
関川, 清広
× 関川, 清広
× 村岡, 裕由
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| 内容記述 | ||||||||||
| 内容記述タイプ | Other | |||||||||
| 内容記述 | The atmospheric concentration of CO2 is exceeding 400 ppm (V/V) in recent years. The global warming by increasing CO2 concentration affects on ecosystems negatively. Our objective in this study is to clarify characteristics of leaves and their photosynthetic responses to increasing CO2 concentration of vascular plant species in a high Arctic tundra ecosystem. In summer of 2014, we measured the photosynthetic responses to ambient CO2 of three dominant species, Saxifraga oppositifolia, Salix polaris, and Dryas octopetala in the high Arctic tundra, near Ny-?lesund, in the northwestern area of Spitsbergen, Svalbard, Norway. We obtained similar results to Muraoka et al. (2008) for photosynthetic light response curves and leaf nitrogen contents (leaf N, %), based on leaf dry mass. The maximum photosynthetic rate of S. polaris was the highest and one of S. oppositifolia was the lowest. The photosynthetic CO2 response curve for S. polaris was the highest and they for S. oppositifolia and D. octopetala were similar. The leaf N for S. polaris was the highest and for S. oppositifolia was the lowest. As results, photosynthetic nitrogen use efficiency (PNUE) for D. octopetala was the highest and for S. oppositifolia was the lowest. The ratio of photosynthetic rates at 800 ppm of ambient CO2 concentration (Ca800) to those at Ca400 was the highest for S. oppositifolia, and the lowest for S. polaris. It is suggested that herbaceous plant species more respond to increasing ambient CO2 concentration than woody species. | |||||||||
| 書誌情報 |
玉川大学学術研究所紀要 号 22, p. 13-20, 発行日 2017-03-01 |
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| ISSN | ||||||||||
| 収録物識別子タイプ | ISSN | |||||||||
| 収録物識別子 | 1341-8645 | |||||||||
| 書誌レコードID | ||||||||||
| 収録物識別子タイプ | NCID | |||||||||
| 収録物識別子 | AN10519956 | |||||||||
| 著者版フラグ | ||||||||||
| 出版者 | ||||||||||
| 出版者 | 玉川大学 | |||||||||
| 言語 | ja | |||||||||
