Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
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Simulation of GHG Emission from Paddy Field using DNDC Model

DNDC를 이용한 논의 온실가스 배출량 모의

  • 신민환 (강원대학교 농업생명과학대학 지역건설공학과) ;
  • 장정렬 (한국농어촌공사 농어촌연구원) ;
  • 원철희 (강원대학교 농업생명과학대학 지역건설공학과) ;
  • 정영훈 (강원대학교 농업생명과학대학 지역건설공학과) ;
  • 이수인 (강원대학교 농업생명과학대학 지역건설공학과) ;
  • 임경재 (강원대학교 농업생명과학대학 지역건설공학과) ;
  • 최중대 (강원대학교 농업생명과학대학 지역건설공학과)
  • Received : 2013.10.22
  • Accepted : 2014.02.24
  • Published : 2014.03.31
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Abstract

This study was conducted to predict greenhouse gas (GHG) emission from paddy by future climate change scenario in Korea. Chuncheon city in Kangwon province were selected as study area. A1B Special Report on Emission Scenario (SRES) of the IPCC (Intergovernmental panel on climate change) was used to assess the future potential climate change. The rainfall and temperature was projected to increase by 8.4 % and 1.9 % (2040s), 35.9 % and 27.0 % (2060s), 19.2 % and 30.8 % (2090s), respectively, compare to the 2010s value. Under the climate change, Denitrification-Decomposition (DNDC) predicted an increase in $N_2O$, $CO_2$ and $CH_4$ emissions from paddy. The simulations resulted in annual net emissions of 0.4~2.4, 500.5~734.5 and 29.4~160.4 kg/ha/year of $N_2O-N$, $CH_4-C$ and $CO_2-C$, respectively, with a cumulated global warming potential (GWP) of $14.5{\sim}21.7t{\cdot}CO_2/ha/year$ were affected by rainfall, temperature, manure amendment and fertilizer amount. The simulation results suggested that implementation of manure amendment or reduction of water consumption instead of increased fertilizer application rates would more efficiently mitigate GHG emissions.

Keywords

References

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