국내 벼 논에서 메탄 기본배출계수 개발

초록

BACKGROUND: Methane (CH4) emission is calculatedusing the default CH4 emission factor as recommended bythe International Panel on Climate Change(IPCC guidelines). However, the default emission factor has been derivedusing including the data from other countries havingdifferent soil and environmental conditions and may notreflect the real CH4 emission rates in Korea. The objectiveof this study was to estimate the baseline emission factor ofCH4 in Korean paddy soils during rice cultivation. METHODS AND RESULTS: Methane emission patternswere characterized in four different paddy soils acrosscountry for a consecutive 3 years during the rice cultivationperiod. Rice plants were cultivated under continuousflooding and fertilized using the recommended chemicalfertilization in Korea (N-P2O5-K2O=90-45-57kg/ha). Themean CH4 emission rate was 2.32 kg CH4/ha/day and theuncertainty of the investigated data was 21.7%, with avaluable error range at 1.82-2.82 kg CH4/ha/day with a 95%confidence interval. CONCLUSION(S): Conclusively, the Korean paddy soils’baseline emission factor of CH4 is approximately 2.32 kgCH4/ha/day and can be used to estimate the CH4 emissionsmore exactly.

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