Item type |
学術雑誌論文 / Journal Article(1) |
公開日 |
2019-03-31 |
タイトル |
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タイトル |
Technical advances in measuring greenhouse gas emissions from thawing permafrost soils in the laboratory |
タイトル |
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言語 |
en |
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タイトル |
Technical advances in measuring greenhouse gas emissions from thawing permafrost soils in the laboratory |
言語 |
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言語 |
eng |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Alaska |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Greenhouse gas |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Incubation |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Permafrost |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Temperature dependence |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Tundra |
資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
アクセス権 |
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アクセス権 |
metadata only access |
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アクセス権URI |
http://purl.org/coar/access_right/c_14cb |
著者 |
Yonemura, Seiichiro
Uchida, Masao
Iwahana, Go
Kim, Yongwon
Yoshikawa, Kenji
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抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
Understanding permafrost soils’ response to global warming is critical for understanding changing global ecosystems. In the present study, we developed a dynamic system for measuring gas emissions from permafrost soils at different soil temperatures and checked the validity of this methodology using 10 permafrost and active layer soil core samples collected under frozen conditions from northern Alaska in winter. We observed that more time (several hours to half a day) was required to control the temperature of permafrost soils than normal soils, particularly during freeze-thaw cycles. Gas emissions were quite variable between samples. However, CO2 emissions were positively related to temperature in all samples, as were CO emissions, particularly for the permafrost samples. CH4 emissions were not detected in any sample, possibly because of atmospheric air as the carrier gas, and H2 was detected in only two samples. Conversely, NO emissions were detected in nearly all samples and were highly correlated with soil nitrogen content, while N2O emissions were detected in only one sample with very low NO emissions. Our findings demonstrate that this novel system could be a powerful tool for understanding gas emission dynamics in permafrost soils. |
書誌情報 |
en : Polar Science
巻 19,
p. 137-145,
発行日 2019-03
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ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
18739652 |
DOI |
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識別子タイプ |
DOI |
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関連識別子 |
https://doi.org/10.1016/j.polar.2019.01.003 |
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関連名称 |
10.1016/j.polar.2019.01.003 |