벼 재배 메탄 배출량의 지역별 차이를 반영한 상향식 산정 방법론: 2020 농림어업총조사 기반 = A Bottom-up Approach to Estimating Regional Methane Emissions from Rice Cultivation Using 2020 Agricultural Census Data in Korea

다국어 초록 (Multilingual Abstract)

Rice cultivation is the largest source of greenhouse gas emissions in the agricultural sector. Methane (CH4) emissions from rice paddies vary depending on cultivation practices such as water management and the use of organic amendments. To account for regional differences in these practices, this study applied the 2019 IPCC guidelines to estimate methane emissions from rice cultivation across the nations, covering every paddy field in each administrative districts in South Korea. Emission factors were calculated at the household level by incorporating variations in water management and organic amendment practices, and then aggregated by administrative district. The total national methane emissions from rice cultivation in 2020 were estimated at 244,911 tons of CH4, showing a consistency of 89.3%. A Monte Carlo simulation reflecting parameter uncertainties yielded a relative uncertainty of 61.6%. This bottom-up approach captures regional variations in cultivation management and complements the current national inventory methodology by providing a framework to enhance estimation accuracy and support region-specific methane mitigation strategies.