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Decoupling Analysis between GHGs and GDP in Korea

국내 온실가스 배출량과 경제성장 간 장단기 비동조화 분석

  • 김대수 (한국환경정책.평가연구원) ;
  • 이상엽 (한국환경정책.평가연구원)
  • Received : 2019.08.28
  • Accepted : 2019.10.21
  • Published : 2019.12.31

Abstract

This paper investigates the level of decoupling between greenhouse gas emissions and economic growth in Korea. Despite previous studies mainly stressed the existence of the Environmental Kuznets Curve, the lack of investigations in the level of decoupling constraints further policy suggestions. This study analyzes the level of decoupling in the short- and long-term, focusing on short-term volatility of GHG emissions income elasticity. In the long run, there is no decoupling in Korea because a robust causal relationship exists between GHGs, GDP, and fossil fuels. However, the short-term volatility is clearly identified under the long-term equilibrium(coupling), indicating there is the relative decoupling in the short run. The results show that fossil fuel dependence is a significant factor that increases short-term volatility(decoupling) and breaks the causal link(coupling) between GHGs and GDP.

본 논문은 1990~2016년 기간의 우리나라 온실가스 배출량과 경제성장 간 비동조화 수준에 대한 장단기 분석을 실시하였다. 환경쿠즈네츠곡선 존재 여부에 초점을 맞추어 수행된 기존 연구와 달리 본 연구는 온실가스와 경제성장 간 관계(온실가스 배출의 소득탄력성)의 단기 변동성에 초점을 맞추어 분석을 수행하였다. 분석결과 장기적으로는 온실가스 - 경제성장 - 화석연료 간 견고한 인과관계가 존재하여 비동조화로 평가하기에 어려운 것으로 나타난 반면, 단기적으로는 상대적 비동조화가 뚜렷하게 확인되었다. 이를 통해 현재 국가 온실가스 배출전망 및 감축목표 상에 배출 소득탄력성의 단기 변동성을 고려하지 못하는 한계점을 제기하였으며, 국가 단위 내 화석연료소비, 특히 발전부문의 화석연료 의존도가 온실가스 배출 소득탄성치의 단기 변동성을 낮추는 주요 요인임을 제시하였다.

Keywords

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