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https://hdl.handle.net/20.500.14094/90008453
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2024-04-26
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90008453 (fulltext)
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90008453
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open access
出版タイプ
Version of Record
タイトル
Influence of Thermal Stratification on Seasonal Net Ecosystem Production and Dissolved Inorganic Carbon in a Shallow Subtropical Lake
著者
Lin, Hao-Chi ; Chiu, Chih-Yu ; Tsai, Jeng-Wei ; Liu, Wen-Cheng ; Tada, Kazufumi ; Nakayama, Keisuke
著者名
Lin, Hao-Chi
著者名
Chiu, Chih-Yu
著者名
Tsai, Jeng-Wei
著者名
Liu, Wen-Cheng
著者名
Tada, Kazufumi
著者ID
A0044
研究者ID
1000060271649
KUID
https://kuid-rm-web.ofc.kobe-u.ac.jp/search/detail?systemId=c5a2042377aa64d0520e17560c007669
著者名
Nakayama, Keisuke
中山, 恵介
ナカヤマ, ケイスケ
所属機関名
工学研究科
収録物名
JGR: Biogeosciences
巻(号)
126(4)
ページ
e2020JG005907
出版者
American Geophysical Union (AGU)
刊行日
2021-04
公開日
2021-11-01
抄録
Thermal stratification is a critical physical process controlling carbon (C) flux from lakes into the atmosphere. In general, vertical water temperature profiles in shallow subtropical lakes can vary significantly because typhoons frequently induce vertical mixing across the entire lake due to strong winds and rapid flushing from river inputs. Since C fluxes are driven by dissolved inorganic C (DIC), it is necessary to understand stratification's influence on DIC dynamics in shallow subtropical lakes. Therefore, we aimed to clarify the impact of stratification on DIC in Yuan-Yang Lake, a typical shallow subtropical mountain lake, by developing a net ecosystem production (NEP) model. We measured the vertical profile of water temperature and DIC once or twice a month from July 2004 to December 2017. We applied a three-dimensional hydrological model to estimate residence time and NEP, which revealed that large amounts of DIC are stored in the lower layer from spring to summer due to the suppression of vertical mixing by stratification. In autumn and winter, the lake was well mixed, and DIC was evenly distributed in the water column due to vertical mixing. This was confirmed by vertical DIC profiles.
キーワード
Net ecosystem production
residence time
shallow subtropical lake
stratification
three-dimensional hydrological model
カテゴリ
工学研究科
学術雑誌論文
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© 2021. American Geophysical Union. All Rights Reserved.
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資源タイプ
journal article
言語
English (英語)
eISSN
2169-8961
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関連情報
DOI
https://doi.org/10.1029/2020JG005907
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