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アイテム
貯水池における水中の二酸化炭素濃度の変動
https://doi.org/10.20636/00013403
https://doi.org/10.20636/000134031edaaacc-3929-4159-89de-6cc448c51d6c
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
NUE69_2_31-36 (1.4 MB)
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| アイテムタイプ | 紀要論文 / Departmental Bulletin Paper(1) | |||||||||
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| 公開日 | 2021-03-17 | |||||||||
| タイトル | ||||||||||
| タイトル | 貯水池における水中の二酸化炭素濃度の変動 | |||||||||
| 言語 | ja | |||||||||
| タイトル | ||||||||||
| タイトル | CO2 concentration dynamics of the surface water in the reservoir | |||||||||
| 言語 | en | |||||||||
| 言語 | ||||||||||
| 言語 | jpn | |||||||||
| キーワード | ||||||||||
| 主題 | 二酸化炭素濃度, 貯水池, 光合成と呼吸, 放出と吸収 CO2 concentration, reservoir, photosynthesis and respiration, emission and absorption |
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| 資源タイプ | ||||||||||
| 資源タイプ | departmental bulletin paper | |||||||||
| ID登録 | ||||||||||
| ID登録 | 10.20636/00013403 | |||||||||
| ID登録タイプ | JaLC | |||||||||
| 著者 |
吉川, 明里
× 吉川, 明里
× 藤井, 智康
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| 著者別名 | ||||||||||
| 姓名 | YOSHIKAWA, Akari | |||||||||
| 著者別名 | ||||||||||
| 姓名 | FUJII, Tomoyasu | |||||||||
| 抄録 | ||||||||||
| 内容記述タイプ | Other | |||||||||
| 内容記述 | The purpose of this study is to develop and apply the carbon dioxide (CO2) measurement technique and to elucidate the CO2 concentration dynamics in the reservoir of freshwater regions, where the photosynthetic rate is high and the short-term changes are affected by the inflowing river. To clarify the CO2 concentration dynamics in the surface water, pH, dissolved oxygen (DO) and electric conductivity (EC) has been continuously and monthly measured in Sengari reservoir from 2016 to 2018. The total alkalinity (TA) highly correlated with the electric conductivity, and a linear equation that converts EC to TA was obtained for Sengari reservoir. The values of CO2 partial pressure (pCO2) were calculated using the “CO2SYS” by CDIAC that uses pH and TA. DO and pCO2 fluctuated with high correlation (R2= 0.90). This suggests that CO2 dynamics can be measured in freshwater using this method. DO and pCO2 records at the Sengari reservoir during the summer stratification period, when the photosynthetic rate was high, indicated prominent diurnal variations corresponding to the changes in solar radiation. In summer, surface water CO2 fluctuation had large diurnal change by photosynthesis, and atmospheric CO2 is absorbed to surface water. In the autumn, CO2 in surface water is released to the atmosphere. |
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| 書誌情報 |
奈良教育大学紀要. 自然科学 en : Bulletin of Nara University of Education. Natural Science 巻 69, 号 2, p. 31-36, 発行日 2020-12-25 |
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| ISSN | ||||||||||
| 収録物識別子タイプ | ISSN | |||||||||
| 収録物識別子 | 05472407 | |||||||||
| 書誌レコードID | ||||||||||
| 収録物識別子タイプ | NCID | |||||||||
| 収録物識別子 | AN00181070 | |||||||||
| 著者版フラグ | ||||||||||
| 出版タイプ | VoR | |||||||||
| 出版者 | ||||||||||
| 出版者 | 奈良教育大学 | |||||||||
