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―
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...
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fttamagawauniv:oai:tamagawa.repo.nii.ac.jp:00000437 2023-05-15T14:56:41+02:00 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― Photosynthetic Responses of Three Dominant Plants in a High Arctic Tundra Ecosystem: A Measurement Test Using a Portable Photosynthesis System and an Improved Chamber 関川 清広 村岡 裕由 2017-03-01 http://hdl.handle.net/11078/422 https://tamagawa.repo.nii.ac.jp/?action=repository_uri&item_id=437 https://tamagawa.repo.nii.ac.jp/?action=repository_action_common_download&item_id=437&item_no=1&attribute_id=8&file_no=1 ja jpn https://tamagawa.repo.nii.ac.jp/?action=repository_uri&item_id=437 http://hdl.handle.net/11078/422 玉川大学学術研究所紀要, (22), 13-20(2017-03-01) 1341-8645 AN10519956 https://tamagawa.repo.nii.ac.jp/?action=repository_action_common_download&item_id=437&item_no=1&attribute_id=8&file_no=1 高緯度北極ツンドラ 維管束植物優占種 光合成のCO2濃度応答特性 Departmental Bulletin Paper 2017 fttamagawauniv 2022-11-19T20:07:40Z 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. Report Arctic Dryas octopetala Global warming Salix polaris Saxifraga oppositifolia Svalbard Tundra Spitsbergen Tamagawa University Academic Repository Arctic Svalbard Norway Lesund ENVELOPE(8.470,8.470,63.331,63.331) |
institution |
Open Polar |
collection |
Tamagawa University Academic Repository |
op_collection_id |
fttamagawauniv |
language |
Japanese |
topic |
高緯度北極ツンドラ 維管束植物優占種 光合成のCO2濃度応答特性 |
spellingShingle |
高緯度北極ツンドラ 維管束植物優占種 光合成のCO2濃度応答特性 関川 清広 村岡 裕由 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― |
topic_facet |
高緯度北極ツンドラ 維管束植物優占種 光合成のCO2濃度応答特性 |
description |
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. |
format |
Report |
author |
関川 清広 村岡 裕由 |
author_facet |
関川 清広 村岡 裕由 |
author_sort |
関川 清広 |
title |
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― |
title_short |
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― |
title_full |
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― |
title_fullStr |
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― |
title_full_unstemmed |
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― |
title_sort |
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― |
publishDate |
2017 |
url |
http://hdl.handle.net/11078/422 https://tamagawa.repo.nii.ac.jp/?action=repository_uri&item_id=437 https://tamagawa.repo.nii.ac.jp/?action=repository_action_common_download&item_id=437&item_no=1&attribute_id=8&file_no=1 |
long_lat |
ENVELOPE(8.470,8.470,63.331,63.331) |
geographic |
Arctic Svalbard Norway Lesund |
geographic_facet |
Arctic Svalbard Norway Lesund |
genre |
Arctic Dryas octopetala Global warming Salix polaris Saxifraga oppositifolia Svalbard Tundra Spitsbergen |
genre_facet |
Arctic Dryas octopetala Global warming Salix polaris Saxifraga oppositifolia Svalbard Tundra Spitsbergen |
op_relation |
https://tamagawa.repo.nii.ac.jp/?action=repository_uri&item_id=437 http://hdl.handle.net/11078/422 玉川大学学術研究所紀要, (22), 13-20(2017-03-01) 1341-8645 AN10519956 https://tamagawa.repo.nii.ac.jp/?action=repository_action_common_download&item_id=437&item_no=1&attribute_id=8&file_no=1 |
_version_ |
1766328776360198144 |