Korean Journal of Agricultural and Forest Meteorology (한국농림기상학회지)

Korean Society of Agricultural and Forest Meteorology (한국농림기상학회)
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Seasonal Variation of Carbon Dioxide and Energy Fluxes During the Rice Cropping Season at Rice-barley Double Cropping Paddy Field of Gimje

김제 벼-보리 이모작 논에서 벼 재배기간동안의 CO2 및 에너지 플럭스의 계절적 변화

  • Received : 2013.10.21
  • Accepted : 2013.12.20
  • Published : 2013.12.30
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Abstract

Based on the results of continuous flux measurements at the Gimje paddy flux site in the southwestern coast of Korea, carbon dioxide and energy exchanges between customarily cultivated rice-barley double cropping paddy field and the atmosphere during the 2012 rice growing season (from $9^{th}$ Jun. 2012 through $20^{th}$ Oct. 2012) were analyzed. Carbon dioxide and energy (H, LE) fluxes were estimated by the eddy covariance method. Environmental parameters (net radiation, precipitation, etc.) and plant biomass (LAI, plant height, etc.) were measured along with fluxes. After the quality control and gap-filling, the observed fluxes were analyzed. The results have been showed that net ecosystem exchange (NEE), gross primary production (GPP), and ecosystem respiration (Re) during the rice cropping period were -277.1, 710.3, and 433.2 g C $m^{-2}$, respectively.

본 연구는 전라북도 김제시 부량면 신용리의 벼-보리 이모작 논에 설치된 플럭스 관측시스템에서 2012년 벼 재배기간동안(6월 9일~10월 20일)에 연속적으로 관측된 플럭스자료를 활용하여, 논 생태계와 대기간의 $CO_2$ 및 에너지(현열, 잠열) 교환량의 계절적 변화를 분석하였다. $CO_2$ 및 에너지의 교환량은 미기상학적인 에디공분산법으로 추정하였고, 환경인자(순복사, 강수량 등)와 작물체 생육량(엽면적지수, 초장 등)도 함께 측정 조사하였다. 관측된 플럭스자료는 보정과 결측보충의 과정을 거친 후 분석에 활용되었다. 결론적으로, 벼-보리 이모작 논 생태계에서 벼 재배기간동안의 $CO_2$의 순생태계교환량(NEE)과 총일차생산량(GPP) 및 생태적호흡량(Re)은 각각 단위면적($m^2$)당 -277.1, 710.3, 433.2g C로 분석되었다.

Keywords

References

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