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Effect of land use change from paddy rice cultivation to upland crop cultivation on soil carbon budget of a cropland in Japan
http://hdl.handle.net/10659/1715
http://hdl.handle.net/10659/1715dcdf39be-1ea1-4ba5-a35f-e06f1ae6ca1d
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
S-385_Sawamoto.pdf (740.3 kB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
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| 公開日 | 2011-03-31 | |||||
| タイトル | ||||||
| タイトル | Effect of land use change from paddy rice cultivation to upland crop cultivation on soil carbon budget of a cropland in Japan | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Net ecosystem exchange | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Paddy-upland crop rotation | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Soil carbon budget | |||||
| 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 |
Nishimura, Seiichi
× Nishimura, Seiichi× Yonemura, Seiichiro× Sawamoto, Takuji× Shirato, Yasuhito× Akiyama, Hiroko× Sudo, Shigeto× Yagi, Kazuyuki |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Effect of land use change from paddy rice cultivation to upland crop cultivation on soil carbon budget (SCB) was studied by comparing three types of cropping system (single cropping of paddy rice (PR), single cropping of upland rice (UR) and double cropping of soybean and wheat (SW)) in an experimental field having the same history as consecutively cultivated paddy rice fields. The carbon dioxide (CO_2) and methane (CH_4) fluxes from the fields were measured continuously over 2.5 years with an automated flux monitoring system. Atmospheric CO_2 was significantly absorbed during the growth periods of different crops, including all the summer crops and winter wheat. The amounts of absorbed CO_2 during the summer crop growth period were highest in the PR plots and lowest in the UR plots. On the other hand, CO_2 emission was observed during the fallow period. In addition, a significantly high peak and the subsequent gradual decrease in CO_2 emission were observed after plowing the fields in autumn. Significant CH_4 emission was found in only the PR plots during the submerged period. With consideration of gas flux data and the amount of carbon supplied and removed by agricultural management practices such as straw incorporation and crop harvest, the SCB in the croplands was estimated. The soil carbon budgets of the PR plots were positive (79-137 g C m^<−2> y<−1>), which indicates the accumulation of carbon in the soil. On the other hand, those of the UR and SW plots were negative (−343 to −275 g C m<−2> y<−1> and −361 to −256 g C m<−2> season<−1>, respectively), which indicates significant carbon loss from the soil. The contribution of CH_4 emission to SCB was small compared with that of CO_2 dynamics. Significant differences in the carbon content of the top soil between the plots were also found after the experiment, consistent with the above SCB result. The results indicate that land use change from paddy rice cultivation to upland crop cultivation causes significant loss of carbon from cropland soil. | |||||
| 書誌情報 |
Agriculture, ecosystems & environment 巻 125, 号 1-4, p. 9-20, 発行日 2008-05 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0167-8809 | |||||
| DOI | ||||||
| 関連タイプ | isVersionOf | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1016/j.agee.2007.11.003 | |||||
| 権利（URI） | ||||||
| 権利情報 | http://dx.doi.org/10.1016/j.agee.2007.11.003 | http://dx.doi.org/10.1016/j.agee.2007.11.003 | |||||
| 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 | Elsevier | |||||
| 資源タイプ | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | Article | |||||
