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Methane and nitrous oxide emissions from paddy fields in Japan: An assessment of controlling factor using an intensive regional data set

https://repository.naro.go.jp/records/2490
https://repository.naro.go.jp/records/2490
e2da7b67-a1e2-4b7c-80ca-d81ccf1b31f0
名前 / ファイル ライセンス アクション
SC30201804060054_PostPrint.pdf SC30201804060054_PostPrint (1.6 MB)
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Item type 学術雑誌論文 / Journal Article(1)
公開日 2019-05-14
タイトル
タイトル Methane and nitrous oxide emissions from paddy fields in Japan: An assessment of controlling factor using an intensive regional data set
タイトル
タイトル Methane and nitrous oxide emissions from paddy fields in Japan: An assessment of controlling factor using an intensive regional data set
言語 en
言語
言語 eng
キーワード
主題Scheme Other
主題 Greenhouse gas (GHG)
キーワード
主題Scheme Other
主題 Soil type
キーワード
主題Scheme Other
主題 Organic amendment
キーワード
主題Scheme Other
主題 Fallow season
キーワード
主題Scheme Other
主題 Mitigation
キーワード
主題Scheme Other
主題 Regional assessment
キーワード
言語 en
主題Scheme Other
主題 Greenhouse gas (GHG)
キーワード
言語 en
主題Scheme Other
主題 Soil type
キーワード
言語 en
主題Scheme Other
主題 Organic amendment
キーワード
言語 en
主題Scheme Other
主題 Fallow season
キーワード
言語 en
主題Scheme Other
主題 Mitigation
キーワード
言語 en
主題Scheme Other
主題 Regional assessment
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 梶浦, 雅子

× 梶浦, 雅子

梶浦, 雅子

ja-Kana カジウラ, マサコ

en KAJIURA, Masako

Search repository
南川, 和則

× 南川, 和則

南川, 和則

ja-Kana ミナミカワ, カズノリ

en MINAMIKAWA, Kazunori

Search repository
常田, 岳志

× 常田, 岳志

常田, 岳志

ja-Kana トキダ, タケシ

en TOKIDA, Takeshi

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白戸, 康人

× 白戸, 康人

白戸, 康人

ja-Kana シラト, ヤスヒト

en SHIRATO, Yasuhito

Search repository
和穎, 朗太

× 和穎, 朗太

和穎, 朗太

ja-Kana ワガイ, ロウタ

en WAGAI, Rota

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抄録
内容記述タイプ Abstract
内容記述 Rice paddy fields, producing a major staple food to support growing world populations, represent a major source of greenhouse gases (GHGs) from agricultural ecosystems. The GHG emissions, mainly as CH4 and N2O from paddy ecosystems, are highly sensitive to both environmental and management factors. Yet the identification of specific factors, a fundamental step for GHG inventory and mitigation, is often limited by data availability. Here, we compiled 572 and 174 data on CH4 and N2O emissions,respectively, from paddy fields across Japan, which arguably represents the most intensive GHG data set from paddy fields per region. We hypothesized that statistical analyses of the intensive data set allow the identification of key factors and possible mechanisms that have not been fully appreciated in the previous studies.
Important environmental factors newly identified for CH4 emission were soil type and precipitation pattern. The soil emitted CH4 the most was Histosols (172% higher) and the least was Andosols (32% lower) compared to the other soil types. Our analysis also revealed that the region of severe summer rainfall (southwestern Japan) tended to have higher CH4 emission. The most critical management-related factor was straw incorporation and its timing had significant impact as previously reported.
Specifically, CH4 emission was 242% and 59% higher by pre-puddling and post-harvest incorporation, respectively. The CH4 response to straw incorporation had relatively large uncertainty, which partly resulted from the variation in straw mass and soil type (esp. Andosols). In addition, the soils having inherently low CH4 emission due presumably to more oxidized conditions had significantly higher response to straw incorporation. Organic amendment increased CH4 by 35%, while water management effect was unclear.
We also found that N2O accounted only for 5.5% of total global warming
potential from the paddy fields and was mainly emitted in fallow season (84% of annual emission). The amount of nitrogen fertilizer added, the commonly-used factor to estimate N2O emission (e.g., IPCC guideline) showed no significant relationship with the N2O emission in rice growing season, which may be explained by very low level of fertilizer application in Japanese paddy fields (typically < 100 kg ha-1 y-1) compared to other parts of the world.
While some of the findings are unique to specific regions (e.g., Andosols), new findings on the factors and potential mechanisms controlling GHG emissions from rice paddy ecosystems would be useful to develop strategies for regional GHG estimate and for modeling biogeochemical cycle in rice paddy ecosystems.
書誌情報 Agriculture Ecosystems & Environment
en : Agriculture Ecosystems & Environment

巻 252, p. 51-60, 発行日 2018-01
出版者
出版者 Elsevier
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.2017.09.035
権利
権利情報 © 2017 Elsevier B.V. All rights reserved.
情報源
関連名称 SC30201804060054
情報源
関連名称 NARO成果DBa
情報源
関連名称 Green open Access
情報源
関連名称 This journal has an embargo period of 24 months.
情報源
関連名称 この論文は出版社版ではありません。引用の際には出版社版をご利用ください。
情報源
関連名称 This is not the published version. Please cite only the published version.
関連サイト
識別子タイプ DOI
関連識別子 https://doi.org/10.1016/j.agee.2017.09.035
関連名称 Agriculture Ecosystems & Environment
他の資源との関係
関連名称 author manuscript
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
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KAJIURA, Masako, MINAMIKAWA, Kazunori, TOKIDA, Takeshi, SHIRATO, Yasuhito, WAGAI, Rota, 2018, Methane and nitrous oxide emissions from paddy fields in Japan: An assessment of controlling factor using an intensive regional data set: Elsevier, 51–60 p.

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