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2016 Fiscal Year Final Research Report

Microbial processes in emission of CH4 and N2O from crop fields and reduction method

Research Project

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Project/Area Number 25281059
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypePartial Multi-year Fund
Section一般
Research Field Design and evaluation of sustainable and environmental conscious system
Research InstitutionHirosaki University

Principal Investigator

Sugiyama Shuichi  弘前大学, 農学生命科学部, 教授 (00154500)

Project Period (FY) 2013-04-01 – 2017-03-31
Keywordsメタン / 温暖化防止 / 水田 / 微生物
Outline of Final Research Achievements

Crop field is one of the major sources for the emission of the two greenhouse gases CH4 and N2O. CH4 is produced by methanogenic archaea in anaerobic paddy soil, while N2O is emitted through microbial metabolic processes of NH4+ and NO3-. In this study the effects of the land change between paddy and arable field on soil microbial processes involved into CH4 and N2O emission were examined. The land change restricted the activity of methanogenic archaea and resulting release of CH4 from paddy. However, the activity recovered in the second year of paddy cropping. The land change also restricted the activity of microbes involved into NH4+ and NO3-metabolism. These results indicate that land change between paddy and arable field is effective to reduce the emission of greenhouse gases from farm lands.

Free Research Field

環境農学

URL: 

Published: 2018-03-22  

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