Item type |
学術雑誌論文 / Journal Article(1) |
公開日 |
2021-12-24 |
タイトル |
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タイトル |
Characteristics of stem respiration in black spruce (Picea mariana) stand, interior Alaska |
タイトル |
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言語 |
en |
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タイトル |
Characteristics of stem respiration in black spruce (Picea mariana) stand, interior Alaska |
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 |
Stem respiration |
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 of air and stem |
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 |
Black spruce forest |
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 |
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 |
Kim, Yongwon
Lee, Bang-Yong
Kim, Seong-Deog
Suzuki, Rikie
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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 |
Boreal forests account for roughly one third of the carbon sequestered in terrestrial ecosystems, and the high-latitude boreal ecosystem they make up has been consequently vulnerable to recent climate change. This study investigated stem respiration of Alaska dominant black spruce trees in interior Alaska during the growing season of 2007. The continuous measurement of stem respiration was conducted in black spruce trees of four different ages (4.3, 7.2, 9.8, and 13.5 cm in diameter at breast height (DBH)) in interior Alaska, using a CO2 analyzer, a 12-V pump, chambers, and a data-logger. Mean stem respiration is 0.014 ± 0.006 mg CO2 m−2 s−1 (range 0.003–0.039 mg CO2 m−2 s−1) in different aged four black spruce trees, indicating remarkably temporal variations in stem respiration with temperatures in air and stem. We found that metabolism is 1.5-fold higher in the younger black spruce tree than in the older. Temperatures in air and stem are significant regulators in regulating stem respiration. The stand-level annual stem respiration simulated by Q10 value based on air temperature is 73.9 g CO2 m−2, corresponding to 5.0% of the ecosystem respiration (Re) estimated by eddy covariance tower in 2007. Our findings demonstrate that stem respiration is a significant component in the scale-up of the regional carbon budget in a black spruce forest of interior Alaska. |
書誌情報 |
en : Polar Science
巻 29,
p. 100693,
発行日 2021-09
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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.2021.100693 |
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関連名称 |
10.1016/j.polar.2021.100693 |