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논문 기본 정보

자료유형
학술저널
저자정보
권효숙 (국립농업과학원) 김건엽 (국립농업과학원) 최은정 (국립농업과학원) 이선일 (국립농업과학원) 이종식 (국립농업과학원)
저널정보
한국기후변화학회 한국기후변화학회지 Journal of Climate Change Research Vol.12 No.1
발행연도
2021.2
수록면
1 - 13 (13page)
DOI
10.15531/ksccr.2021.12.1.001

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초록· 키워드

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Approximately 51% of the greenhouse gas (GHG) emissions generated by the agricultural sector in Korea are emitted from rice fields. Despite the extended fallow season, the calculation of GHG emissions from rice fields has been limited to rice cropping season. In this study, we sought to provide information on GHG emission considering the carbon budget in the fallow season. To compare the influence of water management during cropping season and how it affects the fallow season, two different treatments were examined, continuously flooded (CF-fallow) and intermittent drainage (ID-fallow). The emission rates of methane (CH₄), nitrous oxide (N₂O), and carbon dioxide (CO₂) were monitored using the closed chamber method. Changes in soil carbon were estimated using the net ecosystem carbon budget (NECB) method and the net global warming potential (GWP) calculated. Seasonal CH₄ and N₂O emissions were not significantly different between treatments, but the seasonal CO₂ emission for CF-fallow was significantly higher than that of ID-fallow. The net GWP was 5062 ㎏ CO₂-eq. ha<SUP>-1</SUP> for CF-fallow and 4433 ㎏ CO₂-eq. ha<SUP>-1</SUP> for ID-fallow. Approximately 77% of the calculated net GWP value was affected by the NECB value, followed by 22 ~ 23% affected by N₂O emission. In contrast, the influence of methane on net GWP was less than 1%, suggesting little effect on GHG emissions. In order to reduce GHG emissions during the fallow season in rice paddies, carbon enhancement through the input of carbon sources into the soil should be employed. However, since there are concerns about increased CH₄ emission from decomposing organic material during the cropping season, additional research on appropriate organic material sources and application methods should be conducted.

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ABSTRACT
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3. 결과 및 고찰
4. 결론
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