한국농림기상학회지, 제 5권 제2호(2003) (pISSN 1229-5671, eISSN 2288-1859)
Korean Journal of Agricultural and Forest Meteorology, Vol. 5, No. 2, (2003), pp. 51~60
ⓒ Author(s) 2014. CC Attribution 3.0 License.


한국 하리 논에서의 2002년 생장기간의 CO2와 에너지의 교환

문병관(1), 홍진규(1,2), 이병렬(1), 윤진일(3), 박은우(4), 김준(1,2)
(1)연세대학교 대기과학과
(2)연세대학교 대기모형연구실 지구환경연구소
(3)경희대학교 생태시스템공학과
(4)서울대학교 농생명공학과

CO2 and Energy Exchange in a Rice Paddy for the
Growing Season of 2002 in Hari, Korea

Byung-Kwan Moon(1), Jinkyu Hong(1,2), Byoung-Ryol Lee(1), Jin I. Yun(3), Eun Woo Park(4), Joon Kim(1,2)
(1)Department of Atmospheric Sciences, Yonsei University, Seoul 120-749, Korea
(2)Laboratory for Atmospheric Modeling Research, Yonsei University, Seoul 120-749, Korea
(3)Department of Ecosystem Engineering, Kyung Hee University, Suwon 449-701, Korea
(4)Department of Plant Pathology, Seoul National University, Suwon 441-744, Korea

ABSTRACT
Rice, which occupies about 60% of the farmland in Korea, is a staple crop in Asia. It not only absorbs $CO_2$ 수식 이미지 from the atmosphere, but also emits carbon in a form of CH$_4$ 수식 이미지. It has a potential role in the global budget of greenhouse gases because of its relative contributions of carbon absorption and emission associated with changing hydrologic cycle. To better understand its current and future role, seasonal variations of energy and $CO_2$ 수식 이미지 exchange in this critical ecosystem need to be quantified. The purpose of this study was to measure, document and understand the exchange of energy and $CO_2$ 수식 이미지 in a typical rice paddy in Korea throughout the whole growing season. Since late April of 2002, we have conducted measurements of energy and $CO_2$ 수식 이미지 exchange in a rural rice paddy at Hari site, one of the Korea regional network of tower flux measurement (KoFlux). After the quality control and gap-filling, the observed fluxes were analyzed in the context of micrometeorology and biophysics. $CO_2$ 수식 이미지 and energy exchanges varied significantly with land cover changes (e.g., plant growth stages), in addition to changes in weather and climate conditions. This study, reporting first direct measurement of energy and $CO_2$ 수식 이미지 exchange over a rice paddy in Korea, would serve as a useful database as one of the reference sites in AsiaFlux and FLUXNET.

Keyword: rice paddy, CO2 flux, net ecosystem exchange, KoFlux, AsiaFlux

MAIN

적요

한국 내 농경지의 약 60%를 차지하고 있는 논은 아시아의 주요 농업 생태계의 하나이다. 논은 대기로부터 $CO_2$ 수식 이미지를 흡수함과 동시에 CH$_4$ 수식 이미지의 형태로 탄소를 대기 중으로 방출하는데, 관개 상태에 따라 흡수와 방출의 상대적 크기가 달라져서 온실 기체의 전구 수지에 중요한 변수로 작용할 수 있다. 온실 효과와 관련하여 논의 현재 및 미래의 역할을 보다 잘 이해하기 위하여, 주요 농업 생태계에서의 $CO_2$ 수식 이미지와 에너지 교환을 정량화 하는 것은 매우 중요하다. 이 연구의 목적은, 벼의 전체 생장 기간동안 한국의 전형적인 논에서의 에너지와 $CO_2$ 수식 이미지 교환과정을 관측, 분석하고 이해하는 것이다. 2002년 4월부터 한국 타워 플럭스 관측 지역망(KoFlux)에속한 강화도 하리의 논에서 $CO_2$ 수식 이미지 및 에너지 플럭스 관측을 지속적으로 해오고 있다. 다양한 보정 단계와 처리 과정을 거친 관측 자료를 통해, 논과 대기간의 $CO_2$ 수식 이미지 교환량을 정량화하고, 이를 미기상학적, 생물리학적 관점에서 분석하였다. 날씨 변화와 더불어, 지표 피복 변화와 식물의 생장 단계에 따라 $CO_2$ 수식 이미지 교환량이 민감하게 변화하였다. 국내 논에서의 전 생장기간에 걸친 에너지와 $CO_2$ 수식 이미지 교환에 관한 최초의 직접 관측 보고인 본 연구는, 아시아 플럭스망(AsiaFlux) 내에서 중요한 참고 자료로서의 가치를 지니며, 지면 모형의 보정과 개선, 전구 생지화학적 순환에 대한 논의 역할, 그리고 생물-대기 상호 작용에 대한 근본적인 이해를 향상시키는 데 기여할 것이다.

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