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A Revised Estimate of N2O Emission Factor for Spring Chinese cabbage fields in Korea

국내 봄배추 재배지의 아산화질소 배출계수 개발에 관한 연구

Kim, Gun-Yeob;Park, Woo-Kyun;Jeong, Hyun-Cheol;Lee, Sun-il;Choi, Eun-Jung;Kim, Pil-Joo;Seo, Young-Ho;Na, Un-sung
김건엽;박우균;정현철;이선일;최은정;김필주;서영호;나운성

  • Received : 2015.09.08
  • Accepted : 2015.11.25
  • Published : 2015.12.30

Abstract

Greenhouse-gas emission factors are widely used to estimate emissions arising from a defined unit of a specific activity. Such estimates are used both for international reporting to the United Nations Framework Convention on Climate Change (UNFCCC) and for a myriad of national and subnational reporting purposes. The Intergovernmental Panel on Climate Change (IPCC) provides a methodology for national and sub-national estimation of known greenhouse gas emissions including $N_2O$ for each sector from which the emissions arise. The objective of this study was to develop an emission factor to estimate the direct $N_2O$ emission from an agricultural field cultivated with Chinese cabbage during spring season in 2010-2012. An estimated emission factor of $N_2O$ calculated over three years from field experiment accounting for cumulative $N_2O$ emission, nitrogen fertilization rate, and background $N_2O$ emission was $0.0056{\pm}0.00254$ (95% CI) Kg $N_2O-N/kg$ N. More extensive studies are needed to develop $N_2O$ emission factors for other upland crops in various regions of Korea because $N_2O$ emission is influenced by many factors including climate characteristics, soil properties agricultural practices and crop species.

Keywords

$N_2O$ emission factor;Nitrous oxide emission;Spring Chinese cabbage

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Acknowledgement

Supported by : 농촌진흥청 국립농업과학원