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NTIS 바로가기환경영향평가 = Journal of environmental impact assessment, v.26 no.2, 2017년, pp.127 - 139
이보라 (바이로이트대학교) , 강완모 (한국환경정책.평가연구원) , 김충기 (한국환경정책.평가연구원) , 김지은 (한국환경정책.평가연구원) , 이창훈 (한국환경정책.평가연구원)
Measurements of net ecosystem exchange (NEE) of
핵심어 | 질문 | 논문에서 추출한 답변 |
---|---|---|
생태계 탄소 수지(Carbon Balance) 분석 방법론의 종류에는 무엇이 있는가? | 생태계 탄소 수지(Carbon Balance) 분석 방법론은 생물학적 측정법(Son et al. 2004)과 에디 공분산 기법을 이용한 탄소 플럭스 측정법(Saigusa et al. 2005), MODIS(Moderate Resolution Imaging Spectroradiometer) 위성영상 등을 활용한 원격탐사기법(Running et al. 2004), 생·물리학적 모델링 기법(Ito & Oikawa 2002; Yoo et al. 2012) 등이 있다. 이런 방법 중 산림과 농경지, 초지, 습지 등 다양한 육상 생태계를 대상으로 한 신뢰도 높은 탄소 수지 측정법으로 생태계와 대기 간 탄소 순환을 측정하는 첨단의 미기상학적 에디 공분산법이 널리 활용되고 있다(Wang & Polglase 1995; Baldocchi et al. | |
에디 공분산 방법이 추정할 수 있는 내용은 무엇인가? | 1996). 에디 공분산 방법은 지표에서의 에너지와 물질의 순환을 정량화하는 미기상학적 방법으로 지표-대기 간의 물질 및 연직 에너지 플럭스와 그 교환 과정에서 중요한 역할을 하는 난류의 구조를 밝힘으로써 순생태계 교환량, 총일차생산량, 증발산량 등을 추정 할 수 있다. 현재 650개가 넘는 에디 공분산 기반의 플럭스 타워가 아시아 및 전 지구 플럭스 관측망인 AsiaFlux(http://www. | |
순일차생산량(Net Primary Production: NPP)는 무엇인가? | 대기-생태계 간 탄소순환에 있어 순일차생산량(Net Primary Production: NPP)과 순생태계생산량(Net Ecosystem Production: NEP)이 생태계 기후조절 기능의 주요 평가지표로 활용되고 있다. NPP는 식물이 광합성을 통해 생산한 총 유기물의 양인 총일차생산량(Gross Primary Production: GPP)에서 식물의 성장과 유지에 사용된 호흡량(Autotrophic Respiration: Ra)을 뺀 값이다. NEP는 NPP에서 유기물을 분해하는 종속영양생물의 호흡(Heterotrophic Respiration: Rh)을 제한 값이다. |
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