The Korean Journal of Ecology

한국생태학회 (The Ecological Society of Korea)
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Simple Biosphere Model 2 (SiB2)의 생태학적 응용

Application of Simple Biosphere Model (SiB2) to Ecological Research

  • 김원식 (서울대학교 기초과학연구원) ;
  • 조재일 (토쿄대학 토목공학과)
  • 발행 : 2004.08.01
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초록

Simple Biosphere model 2(SiB2)는 전구기후모형 (global climate model)의 지표면모형으로서 토양-식생-대기 사이의 에너지, 물 및 이산화탄소 교환을 모의한다. 특히 광합성-기공전도 하부모형을 포함하고 있어, 식물군락의 광합성과 기공개폐기작을 근거로 하여 이산화탄소 동화량 및 물의 증산량을 계산한다. 따라서 SiB2 수치실험 결과를 통해, 육상생태계에 있어서의 이산화탄소 순환, 물수지, 그리고 환경과 식물군락간의 상호관계를 분석할 수 있다. 본 종설은 일례로서 개량된 SiB2-Paddy를 이용하여, 다양한 식생 및 토지 이용을 보이는 태국 챠오플라야강 유역의 하천유출량 변화에 관한 연구를 소개한다. 이는 SiB2 수치실험결과가 지표면 식생의 차이에 따른 유출량의 변화를 예측 가능하며, 이를 통하여 육상생태계에 있어서 식생이 갖는 기능적인 측면을 연구하는데 적합한 모형임을 알 수 있었다. 그러나 SiB2모형을 이용하여 더욱 정확도 높은 육상 생태계 모의를 위해서는 토양호흡, 엽면적지수, 식물군락간 경쟁 그리고 뿌리의 분포를 고려한 토양수분 등을 모의할 수 있는 하부모형의 도입이 필요하다.

The simple biosphere model 2 (SiB2), which is one of the land surface models, simulates the exchange of momentum, energy and mass such as water vapor and carbon dioxide between atmosphere and biosphere, and includes the biochemical sub-model for representation of stomatal conductance and photosynthetical activities. Throughout the SiB2 simulation, the significant information not only to understand of water and carbon budget but also to make an analysis of interaction such as feed-back and-forward between environment and vegetation is given. Using revised SiB2-Paddy, one sample study which is the evaluation of the runoff in Chaophraya river basin according to land use/cover change is presented in this review. Hence, SiB2 is available in order to ecological studied, if revised SiB2 for realistic simulation about soil respiration, computing leaf area index, vegetation competition and soil moisture is improved.

키워드

참고문헌

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