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Hydrometeorological behaviour of pine and larch forests in eastern Siberia
http://hdl.handle.net/2237/7757
http://hdl.handle.net/2237/7757ed3ac70b-4a30-4280-8276-4dae3c9759e8
名前 / ファイル | ライセンス | アクション |
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2007-05-02 | |||||
タイトル | ||||||
タイトル | Hydrometeorological behaviour of pine and larch forests in eastern Siberia | |||||
言語 | en | |||||
著者 |
Hamada, Shuko
× Hamada, Shuko× Ohta, Takeshi× Hiyama, Tetsuya× Kuwada, Takashi× Takahashi, Atsuhiro× Maximov, Trofim.C |
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アクセス権 | ||||||
アクセス権 | open access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
権利 | ||||||
言語 | en | |||||
権利情報 | This is a preprint of an article published in Hydrological Processes v.18, n.1, 2004, p.23-29 (C)Copyright 2004 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Water and energy exchanges | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | SVAT | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Understory evapotranspiration | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Bowen ratio | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | eddy correlation | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | GAME-Siberia | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | GEWEX | |||||
抄録 | ||||||
内容記述 | Seasonal changes in the water and energy exchanges over a pine forest in eastern Siberia were investigated and compared with published data from a nearby larch forest. Continuous observations (April to August 2000) were made of the eddy-correlation sensible heat flux and latent heat flux above the canopy. The energy balance was almost closed, while the sum of the turbulent fluxes sometimes exceeded the available energy flux (Rn-G) when the latent heat flux was large; this was related to the wind direction. We examined the seasonal variation in energy balance components at this site. The seasonal variation and magnitude of the sensible heat flux (H) was similar to that of the latent heat flux (λE), with maximum values occurring in mid-June. Consequently, the Bowen ratio was around 1.0 on many days during the study period. On some clear days just after rainfall, λE was very large, and the sum of H and λE exceeded Rn-G. The evapotranspiration rate above the dry canopy from May to August was 2.2 mm・day^-1. The contributions of understory evapotranspiration (Eu) and overstory transpiration (Eo) to the evapotranspiration of the entire ecosystem (Et) were both from 25 to 50% throughout the period analyzed. These results suggest that Eu plays a very important role in the water cycle at this site. From snowmelt through the tree growth season (23 April to 19 August 2000), the total incoming water, comprised of the sum of precipitation and the water equivalent of the snow at the beginning of the melt season, was 228 mm. Total evapotranspiration from the forest, including interception loss and evaporation from the soil when the canopy was wet, was 208-254 mm. The difference between the incoming and outgoing amounts in the water balance was from +20 to -26 mm. The water and energy exchanges of the pine and larch forest differed in that λE and H increased slowly in the pine forest, while λE increased rapidly in the larch forest and H decreased sharply after the melting season. Consequently, the shape of the Bowen ratio curves at the two sites differed over the period analyzed, as a result of the differences in the species in each forest and in soil thawing. | |||||
言語 | en | |||||
内容記述タイプ | Abstract | |||||
出版者 | ||||||
言語 | en | |||||
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 | |||||
出版タイプ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1002/hyp.1308 | |||||
ISSN | ||||||
収録物識別子タイプ | PISSN | |||||
収録物識別子 | 0885-6087 | |||||
書誌情報 |
en : Hydrological Processes 巻 18, 号 1, p. 23-29, 発行日 2004-01 |
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フォーマット | ||||||
application/pdf | ||||||
著者版フラグ | ||||||
値 | author | |||||
URI | ||||||
識別子 | http://hdl.handle.net/2237/7757 | |||||
識別子タイプ | HDL |