WEKO3
アイテム
水田土壌中有機物の分解に由来するCO2およびCH4の炭素同位体比の経時変化
https://doi.org/10.18999/sumrua.22.180
https://doi.org/10.18999/sumrua.22.18092d2291e-da32-4b09-a387-ffaa737f862c
名前 / ファイル | ライセンス | アクション |
---|---|---|
moriizumi2010.pdf (929.4 kB)
|
|
Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
---|---|---|---|---|---|---|
公開日 | 2012-06-06 | |||||
タイトル | ||||||
タイトル | 水田土壌中有機物の分解に由来するCO2およびCH4の炭素同位体比の経時変化 | |||||
言語 | ja | |||||
その他のタイトル | ||||||
その他のタイトル | Variations in carbon isotopic ratios of CO2 and CH4 derived from rice paddy soil organic matter with progress of its decomposition | |||||
言語 | en | |||||
著者 |
森泉, 純
× 森泉, 純× 森, 嘉貴× 江川, 紗矢香× 山澤, 弘美× MORIIZUMI, Jun× MORI, Yoshiki× EGAWA, Sayaka× YAMAZAWA, Hiromi |
|||||
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 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | soil organic matter decomposition | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | rice paddy | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | carbon dioxide | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | methane | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | turn over time | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 土壌有機物分解 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 水田 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 二酸化炭素 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | メタン | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 回転時間 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The characteristics of decomposition of soil organic matter (SOM) in a rice paddy have been studied in terms of cycling of carbon, especially radioactive 14C, in a rice paddy. Production rate of CO2 from incubated paddy soil under aerobic condition and that of CH4 under anaerobic condition were measured for periods of more than 100 d. The incubations were undergone at warmer temperature than real condition of rice paddy to "accelerate" SOM decomposition several times faster than the real condition. Both production rates of CO2 and CH4 showed rapid decrease to 10^-10 kg-C (kg-dry soil)-1s^-1 for 10 d just after starting the incubations, and then they decreased moderately. For CO2 the variations in carbon isotopic ratios (δ13C, Δ14C) were also measured during the incubation. At first the δ13C of SOM-derived CO2 was ca. -22 ‰, and it rapidly decreased to less than -28 ‰ to become close to that of SOM (-29.2 ‰). The variation in Δ14C of CO2 also showed slightly higher value for the fist several days than those for the period after 20 d. However, all of Δ14C measurements were less than 0, and this means their 14C ages were older than 1960s, the era of atmospheric nuclear weapon testing, apparently. Since these apparent ages are inconsistent to the time scale of SOM decomposition measured in this study, older SOM as well as modern one might be attributed to source of the CO2. | |||||
言語 | en | |||||
内容記述 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 第23回名古屋大学年代測定総合研究センターシンポジウム平成22(2010)年度報告 | |||||
言語 | ja | |||||
出版者 | ||||||
出版者 | 名古屋大学年代測定資料研究センター | |||||
言語 | ja | |||||
言語 | ||||||
言語 | jpn | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | departmental bulletin paper | |||||
出版タイプ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
ID登録 | ||||||
ID登録 | 10.18999/sumrua.22.180 | |||||
ID登録タイプ | JaLC | |||||
書誌情報 |
ja : 名古屋大学加速器質量分析計業績報告書 巻 22, p. 180-186, 発行日 2011-03 |
|||||
著者版フラグ | ||||||
値 | publisher |