Journal of Korean Society of Forest Science (한국산림과학회지)

Korean Society of Forest Science (한국산림과학회)
권호 표지

Estimation of Forest Soil Carbon Stocks with Yasso using a Dendrochronological Approach

연륜연대학적 접근을 이용한 Yasso 모델의 산림토양탄소 저장량 추정

  • Lee, Ah Reum (Department of Climate Environment, Graduate School of Life and Environmental Sciences, Korea University) ;
  • Noh, Nam Jin (Division of Environmental Science and Ecological Engineering, Korea University) ;
  • Yoon, Tae Kyung (Division of Environmental Science and Ecological Engineering, Korea University) ;
  • Lee, Sue Kyoung (Division of Environmental Science and Ecological Engineering, Korea University) ;
  • Seo, Kyung Won (Division of Environmental Science and Ecological Engineering, Korea University) ;
  • Lee, Woo-Kyun (Department of Climate Environment, Graduate School of Life and Environmental Sciences, Korea University,Division of Environmental Science and Ecological Engineering, Korea University) ;
  • Cho, Yongsung (Department of Climate Environment, Graduate School of Life and Environmental Sciences, Korea University) ;
  • Son, Yowhan (Department of Climate Environment, Graduate School of Life and Environmental Sciences, Korea University,Division of Environmental Science and Ecological Engineering, Korea University)
  • 이아름 (고려대학교 기후환경학과) ;
  • 노남진 (고려대학교 환경생태공학과) ;
  • 윤태경 (고려대학교 환경생태공학과) ;
  • 이수경 (고려대학교 환경생태공학과) ;
  • 서경원 (고려대학교 환경생태공학과) ;
  • 이우균 (고려대학교 기후환경학과,고려대학교 환경생태공학과) ;
  • 조용성 (고려대학교 기후환경학과) ;
  • 손요환 (고려대학교 기후환경학과,고려대학교 환경생태공학과)
  • Received : 2009.10.28
  • Accepted : 2009.11.16
  • Published : 2009.12.31
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Abstract

The role of forest and soil carbon under global climate change is getting important as a carbon sink and it is necessary to research on applicable forest models as well as in the field for a study of these dynamics. On this study, historical annual litter dataset as a major input data for the forest soil carbon model, Yasso was established using a dendrochronological reconstruction method, and the soil carbon dynamics of a Pinus densiflora forest in Gwangneung, Korea was simulated using Yasso. The amount of litter (needle, branch, stem and fine root) production, which was estimated using the dendrochronological method, has increased continuously from 1971 to 2006. Furthermore, there was no significant error between estimated and measured values of litter production (needle and branch) in 2006. The average of simulated soil carbon stock up to 30 cm depth was $46.30{\pm}4.28tCha^{-1}$, which accounted for 53% of carbon stock in trees of the forest, and had no significant difference and error with measured soil carbon stock. Under the climate change trend in Korea according to IPCC A1B scenario, it was estimated that the simulated soil carbon stock in the region would increase continuously from 1971 to 2041 and then decreased until 2100. Compared to the result of the scenario that there is no climate change, the soil carbon stock could be decreased up to 7.58% at 2100. It was inferred the dendrochronological reconstruction method and simulation of Yasso model are useful to estimate soil carbon dynamics of the natural P. densiflora forest. Follow-up researches, such as improvement of the dendrochronological method and Yasso model and their application and validation in various environment, are needed to produce more reliable results.

전 지구적인 기후변화에 따라 산림 및 토양탄소의 역할은 탄소 저장고로서 매우 중요하며, 이들의 동태를 연구하기 위해서는 기존의 현장연구뿐만 아니라 적용 가능한 산림모델 연구가 필요하다. 본 연구에서는 산림토양탄 소모델인 Yasso의 주요 입력자료인 과거의 연간 낙엽량 자료를 연륜연대학적 자료구축과정을 통해 생산하고, 위 모델을 이용하여 광릉지역 천연소나무림(Pinus densiflora)의 토양탄소동태를 모의하였다. 연륜연대학적 자료구축과정을 통해 계산된 임분 내 낙엽(침엽, 가지, 줄기, 세근)의 생산량은 1971년부터 2006년까지 지속적으로 증가해왔다. 또한 2006년 낙엽 생산량(침엽, 가지)의 실측값과 추정값을 비교한 결과 유의적인 오차는 없었다. 모의된 30 cm 깊이까지의 토양탄소 저장량의 임분 전체평균은 $46.30{\pm}4.28tCha^{-1}$로 산림의 임목 내 탄소 저장량의 약 53%를 차지했으며, 실측값과 비교하여 유의한 차이 및 오차가 없었다. IPCC A1B 시나리오에 따른 한반도 기후변화추세를 반영한 이 지역의 모의된 토양탄소 추정량은 1971년부터 2041년까지 지속적으로 증가한 후 2100년까지 감소되는 것으로 나타났다. 기후변화를 고려하지 않는 시나리오의 결과와 비교하면 2100년에 이르러 최고 7.58%까지 토양탄소량이 감소될 수 있다. 본 연륜연대학적 자료 구축방법과 Yasso 모델을 이용한 모의과정은 천연소나무림의 토양탄소동태를 추정하는데 유용한 것으로 판단되었다. 향후 더욱 신뢰성 있는 결과를 생산할 수 있도록 연륜연대학적 방법 및 Yasso 모델의 개선과 다양한 환경에서의 적용 및 타당성평가와 같은 후속연구가 필요한 것으로 사료된다.

Keywords

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