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NTIS 바로가기Journal of environmental science international = 한국환경과학회지, v.26 no.9, 2017년, pp.1087 - 1099
Emergy methodology was used to analyze the biophysical basis of Korean agriculture and assess its sustainablility. Total yearly emergy input into Korean agriculture was
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핵심어 | 질문 | 논문에서 추출한 답변 |
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외부구입 에머지가 에머지 총량의 90%를 차지하는 것은 무엇을 의미하는가? | 95×1022 sej/yr)로 대부분을 차지했다. 이는 우리나라 농작물 생산이 지역의 에머지 공급원(재생가능 및 재생불가능)이 아니라 시장에서 공급 하는 다양한 재화와 용역(대부분 재생불가능 자원에 기반한 산물)에 의존하는 산업적 농업의 특성을 가지고 있음을 뚜렷이 나타낸다. 농작물을 생산하는데 투입된 에머지 총량을 화폐 단위로 환산하면 18조 9,120 억원/년이었다. | |
농업 경쟁력에 부정적으로 작용하는 경제적 요인은 무엇인가? | 환경적으로는 지속적인 개발로 인한 농지 감소, 토양 및 수질 오염, 기상 이변 등 국내 환경 변화가 농업 생산에 영향을 미치고 있으며, 기후 변화 등 지구적 차원의 환경 변화에도 노출되어 있다. 경제적 측면에서는 인구 감소로 인한 농산물 수요 감소 및 농산물 소비 패턴 변화, 농산물 시장 개방 확대 및 이에 따른 구조 조정, 에너지 가격 변동 등은 농업 경쟁력에 부정적 요인으로 작용하고 있다. 또한 사회적으로는 농가 인구의 급격한 감소 및 고령화, 수입 농산물의 안전성 문제, 식량 자급률 하락 등 국가 경제의 기본 토대인 농업 기반이 약화하고 있다. | |
에머지 평가법이 기존 시스템 분석의 한계를 보완할 수 있는 이유는 무엇인가? | 시스템 평가 및 생태계 가치 평가에 에너지량, 물질량 등 생물리 자료뿐만 아니라 인건비, 재료비, 연료비 등 화폐량으로 표시되는 사람들의 노력까지 포함하는 에머지 평가법(emergy methodology)은 생태-경제시스템을 통합적으로 평가하기 위한 방법으로 개발되었 다(Odum, 1996). 에머지 평가법은 생태-경제시스템 의 유지와 생산에 기여하는 자연의 역할과 인간의 노력을 동일한 기준에서 평가하기 때문에 기존 시스템 분석 연구의 한계를 보완할 수 있는 방법이다. 에머지 평가법은 1990년대 중반 국내에 도입(Lee and Odum, 1994)된 이후 다양한 분야에 적용되었는데, 국가 경제 평가(Kang, 2015), 생태-경제시스템 분석 및 생태계 가치 평가(Kang, 2001; Kang, 2007; Kang, 2013; Nam and Kang, 2016), 개발 사업의 비용-편익 분석 (Kim, 2002; Kang and Park, 2002), 환경관리 대안 비교(Hong et al. |
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