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Comparison of N_2O and CO_2 concentrations and fluxes in the soil profile between a Gray Lowland soil and an Andosol
http://hdl.handle.net/10659/2800
http://hdl.handle.net/10659/280008b9a25d-1f35-4ddc-98e1-6988bd125ca5
名前 / ファイル | ライセンス | アクション |
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S-2011-15_Sawamoto.pdf (950.9 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2012-10-01 | |||||
タイトル | ||||||
タイトル | Comparison of N_2O and CO_2 concentrations and fluxes in the soil profile between a Gray Lowland soil and an Andosol | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Andosol | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | carbon dioxide | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | gas concentration in soil profile | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Gray Lowland soil | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | nitrous oxide | |||||
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 | journal article | |||||
著者 |
KUSA, Kanako
× KUSA, Kanako× 澤本, 卓治× HU, Ronggui× HATANO, Ryusuke |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | We measured nitrous oxide (N_2O) and carbon dioxide (CO_2) fluxes from the soil surface and in the soil through to a depth of 0.3 m, and their concentration profiles through to a depth of 0.6 m in both a Gray Lowland soil with macropores and cracks and an Andosol with undeveloped soil structure in central Hokkaido, Japan. The objective of the present study was to elucidate any differences in N_2O production and flux in the soil profile between these two soil types. In the Gray Lowland soil, the N_2O concentration above 0.4 m increased with an increase in soil depth. In the Andosol, there were no distinctive N_2O concentration gradients in the topsoil when the N_2O flux did not increase. However, the N_2O concentration at a depth of 0.1 m significantly increased and this concentration was higher than the concentration below 0.2 m when the N_2O flux greatly increased. Thus, the N_2O concentration profiles were different between these two soils. The contribution ratios of the N_2O produced in the top soil (0-0.3 m depth) to the total N_2O emitted from the soil to the atmosphere in the Gray Lowland soil and the Andosol were 0.86 and 1.00, respectively, indicating that the N_2O emitted from the soil to the atmosphere was mainly produced in the top soil. However, the contribution ratio of the subsoil to the N_2O emitted from the Gray Lowland soil was higher than that of the Andosol. There was a significant positive correlation between the N_2O flux through to a 0.3 m depth and the flux from the soil to the atmosphere in the Gray Lowland soil only. These results suggest that N_2O production in the subsoil of the Gray Lowland soil could have been activated by NO_3^− leaching through macropores and cracks, and subsequently the N_2O produced in the subsoil could have been rapidly emitted to the atmosphere through the macropores and cracks. | |||||
書誌情報 |
Soil Science & Plant Nutrition 巻 56, 号 1, p. 186-199, 発行日 2010 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0038-0768 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1111/j.1747-0765.2009.00439.x | |||||
権利 | ||||||
権利情報 | © 2010 Japanese Society of Soil Science and Plant Nutrition | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
出版者 | ||||||
出版者 | Wiley-Blackwell | |||||
資源タイプ | ||||||
内容記述タイプ | Other | |||||
内容記述 | Article |