한국농림기상학회지, 제 9권 제2호(2007) (pISSN 1229-5671, eISSN 2288-1859)
Korean Journal of Agricultural and Forest Meteorology, Vol. 9, No. 2, (2007), pp. 109~120
DOI: 10.5532/KJAFM.2007.9.2.109
ⓒ Author(s) 2014. CC Attribution 3.0 License.

수문생지화학적 접근을 통한 광릉 산림 유역의 물과 탄소 순환 이해

김수진(1), 이동호(1), 김 준(1), 김 승(2)
(1)연세대학교 대기과학과/지구환경연구소,
(2)건설기술연구원/수자원의 지속적 확보기술개발 사업단

(2007년 03월 12일 접수; 2007년 06월 11일 수락)

Hydro-Biogeochemical Approaches to Understanding of Water and
Carbon Cycling in the Gwangneung Forest Catchment

Su-Jin Kim(1), Dongho Lee(1), Joon Kim(1), Sung Kim(2)
(1)Department of Atmospheric Sciences/Global Environmental Laboratory, Yonsei University,
Shinchon-dong 134, Seodaemun-gu, Seoul 120-749, Korea
(2)Sustainable Water Resources Research Center/KICT, Goyang City, Kyeonggi-do 411-712, Korea

(Received March 12, 2007; Accepted June 11, 2007)

The information on flowpath, storage, residence time, and interactions of water and carbon transport in a catchment is the prerequisite to the understanding and predicting of water and carbon cycling in the mountainous landscapes of Korea. In this paper, along with some up-to-date results, we present the principal methods that are currently used in HydroKorea and CarboKorea research to obtain such information. Various catchment hydrological processes have been examined on the basis of the water table fluctuations, the end-member mixing model, the cross correlation analysis, and cosmogenic radioactive isotope activity. In the Gwangneung catchment, the contribution of surface discharge was relatively large, and the changes in the amount, intensity and patterns of precipitation affected both the flowpath and the mean residence time of water. Particularly during the summer monsoon, changes in precipitation patterns and hydrological processes in the catchment influenced the carbon cycle such that the persistent precipitation increased the discharge of dissolved organic carbon (DOC) concentrated in the surface soil layer. The improved understanding of the hydrological processes presented in this report will enable a more realistic assessment of the effects of climate changes on the water resource management and on the carbon cycling in forest catchments.

Keyword: Gwangneung forest catchment, Hydro-biogeochemistry, Monsoon, Carbon and water cycling, DOC



한국 산악 경관에서의 물과 탄소의 순환을 이해하고 예측하기 위해서는 물과 탄소의 유역 내 이동 경로, 저류, 체류시간 및 상호작용에 대한 정보가 선행되어야한다. 이와 관련하여 본 논문에서는 HydroKorea 및 CarboKorea 연구에서 사용하고 있는 연구 방법들과 현재까지의 주요 결과를 소개한다. 유역 내 다양한 수문순환 과정을 이해하기 위해 지하수위 변동, endmember mixing model, 교차상관 분석, 대기 기원의 천연방사성 동위원소를 이용하였다. 광릉 산림 유역에서는 지표유출의 기여도가 상대적으로 높았고, 강수량과 강수강도 및 패턴의 변화가 물의 유출경로와 체류시간에 영향을 주었다. 특히, 몬순으로 인한 강수형태와 유역 내 수문과정의 변화가 탄소 순환에 영향을 미쳤는데, 지속적인 강우의 유입이 산림토양의 표층에 분포하는 고농도의 용존유기탄소의 유출을 증가시켰다. 본 연구를 통하여 시도된 수문순환과정에 대한 정량적인 규명은 기후 변화가 수자원 관리와 산림유역 탄소순환에 미치는 영향을 예측하기 위한 과학적 방법론을 확립하는데 기여할 것으로 기대된다.


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