Author
Ai Leon, Kazunori Kohyama, Kazuyuki Yagi, Yusuke Takata and Hiroshi Obara (obara@affrc.go.jp)
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Mitigation and Adaptation Strategies for Global Change, 2017, vol. 22, issue 1, pages 85-98
Abstract: Abstract Cultivated wetland rice fields are a source of methane (CH4) emissions. To estimate CH4 emissions and develop policies to reduce such emissions, information on water management at the farm level is crucial. It is known that farmers implement midseason drainage (MD) to increase rice yields and save water. However, little is known about whether MD is carried out in soils where CH4 emissions are high and how part-time status will influence management. The objective of this study is to identify factors that determine MD implementation using a binomial logistic regression model based on a farm-level survey in Japan and to indicate possible changes in estimates of CH4 emissions, accounting for current water management practices. The implementation rates were significantly higher where the soil types were classified as having the potential for high CH4 emissions. Under current water management practices, the duration of MD and the percentage of continuous flooding were 5 to 7 days longer and approximately 7 % higher, respectively, than the values used by the Greenhouse Gas Inventory Office of Japan, which in turn are used to report greenhouse gas emissions to the United Nations Framework Convention on Climate Change. By accounting for current water conditions with the Tier 2 method, this study indicates that national estimates of CH4 emissions from rice straw application areas could be lowered by 12.7 %. These results may contribute to the development of a mitigation policy that will help to further reduce CH4 emissions.
Keywords: Continuous flooding; Methane emissions; Midseason drainage; National soil survey; Paddy fields in Japan; Soil groups (search for similar items in EconPapers)
Date: 2017
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http://econpapers.repec.org/article/sprmasfgc/v_3a22_3ay_3a2017_3ai_3a1_3ad_3a10.1007_5fs11027-015-9665-9.htm
Ai Leon, Kazunori Kohyama, Kazuyuki Yagi, Yusuke Takata and Hiroshi Obara (obara@affrc.go.jp)
Additional contact information
Mitigation and Adaptation Strategies for Global Change, 2017, vol. 22, issue 1, pages 85-98
Abstract: Abstract Cultivated wetland rice fields are a source of methane (CH4) emissions. To estimate CH4 emissions and develop policies to reduce such emissions, information on water management at the farm level is crucial. It is known that farmers implement midseason drainage (MD) to increase rice yields and save water. However, little is known about whether MD is carried out in soils where CH4 emissions are high and how part-time status will influence management. The objective of this study is to identify factors that determine MD implementation using a binomial logistic regression model based on a farm-level survey in Japan and to indicate possible changes in estimates of CH4 emissions, accounting for current water management practices. The implementation rates were significantly higher where the soil types were classified as having the potential for high CH4 emissions. Under current water management practices, the duration of MD and the percentage of continuous flooding were 5 to 7 days longer and approximately 7 % higher, respectively, than the values used by the Greenhouse Gas Inventory Office of Japan, which in turn are used to report greenhouse gas emissions to the United Nations Framework Convention on Climate Change. By accounting for current water conditions with the Tier 2 method, this study indicates that national estimates of CH4 emissions from rice straw application areas could be lowered by 12.7 %. These results may contribute to the development of a mitigation policy that will help to further reduce CH4 emissions.
Keywords: Continuous flooding; Methane emissions; Midseason drainage; National soil survey; Paddy fields in Japan; Soil groups (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations Track citations by RSS feed
Downloads: (external link)
http://link.springer.com/10.1007/s11027-015-9665-9 Abstract (text/html)
Access to the full text of the articles in this series is restricted.
Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.
Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text
Persistent link: http://EconPapers.repec.org/RePEc:spr:masfgc:v:22:y:2017:i:1:d:10.1007_s11027-015-9665-9
Ordering information: This journal article can be ordered from
http://www.springer.com/economics/journal/11027
Access Statistics for this article
Mitigation and Adaptation Strategies for Global Change is currently edited by Robert Dixon
More articles in Mitigation and Adaptation Strategies for Global Change from Springer
Series data maintained by Sonal Shukla (sonal.shukla@springer.com).
For further details log on website :
http://econpapers.repec.org/article/sprmasfgc/v_3a22_3ay_3a2017_3ai_3a1_3ad_3a10.1007_5fs11027-015-9665-9.htm
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