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  1. B300 農学部/生命農学研究科
  2. B300a 雑誌掲載論文
  3. 学術雑誌

Temporal variations in the linkage between the net ecosystem exchange of water vapour and CO2 over boreal forests in eastern Siberia

http://hdl.handle.net/2237/24075
0ded1e71-5174-4d14-bbe2-0eafe280f026
名前 / ファイル ライセンス アクション
10_1002eco_1449.pdf 10_1002eco_1449.pdf (1.4 MB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2016-05-02
タイトル
タイトル Temporal variations in the linkage between the net ecosystem exchange of water vapour and CO2 over boreal forests in eastern Siberia
著者 Kotani, Ayumi

× Kotani, Ayumi

WEKO 65314

Kotani, Ayumi

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Kononov, Alexander V.

× Kononov, Alexander V.

WEKO 65315

Kononov, Alexander V.

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Ohta, Takeshi

× Ohta, Takeshi

WEKO 65316

Ohta, Takeshi

Search repository
Maximov, Trofim C.

× Maximov, Trofim C.

WEKO 65317

Maximov, Trofim C.

Search repository
権利
権利情報 "This is the peer reviewed version of the following article: [Kotani, A., Kononov, A. V., Ohta, T. and Maximov, T. C. (2014), Temporal variations in the linkage between the net ecosystem exchange of water vapour and CO2 over boreal forests in eastern Siberia. Ecohydrol., 7: 209–225. doi:10.1002/eco.1449], which has been published in final form at [http://doi.org/10.1002/eco.1449]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving."
キーワード
主題Scheme Other
主題 boreal forest
キーワード
主題Scheme Other
主題 Siberia
キーワード
主題Scheme Other
主題 evapotranspiration
キーワード
主題Scheme Other
主題 CO2 exchange
キーワード
主題Scheme Other
主題 water use efficiency
抄録
内容記述 This study investigated evapotranspiration and CO2 exchange, observed by the eddy covariance method, over two larch-dominated forests, in the middle part of the Lena basin, eastern Siberia. Compared with the Spasskaya Pad (SP) forest, the Elgeeii (EG) forest had more plant biomass and a soil texture that allowed for larger water retention. Observations in three growing seasons revealed that the two sites had similar seasonal patterns of meteorological conditions and almost the same total evapotranspiration; however, the net and gross uptakes of CO2 at the EG forest were 1·61 and 1·31 times those at the SP forest, respectively. The difference in aboveground biomass was probably responsible for the higher productivity at EG. Less aboveground biomass would result in less transpiration by trees at SP, which would be compensated for in total evapotranspiration by soil evaporation and transpiration by the forest floor vegetation. It is likely that forest transpiration is commonly optimized to the same level of evapotranspiration under similar meteorological conditions through differences in the contributions of evapotranspiration from the forest floor vegetation and the soil water availability. Water use efficiency (WUE) displayed different patterns, reflecting the seasonal variations in each flux. Seasonal sequences in the WUE at EG indicated a midsummer depletion, which is commonly observed in forest ecosystems under a broad climate. Daily variation corresponding to the vapour pressure deficit and the cloud cover conditions (reduced solar radiation) was also observed. In contrast, WUE was relatively invariable at the seasonal and daily scales at SP. Copyright © 2013 John Wiley & Sons, Ltd.
内容記述タイプ Abstract
出版者
出版者 Wiley
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
ISSN
収録物識別子タイプ ISSN
収録物識別子 1936-0592
書誌情報 Ecohydrology

巻 7, 号 2, p. 209-225, 発行日 2014-04
著者版フラグ
値 author
URI
識別子 http://doi.org/10.1002/eco.1449
識別子タイプ DOI
URI
識別子 http://hdl.handle.net/2237/24075
識別子タイプ HDL
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