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불암산 도시자연공원 상수리나무군락의 토양호흡 특성 연구

A study on the soil $CO_2$ Efflux in Quercus acutissima stand at Mt. Bulam urban nature park

  • 김정섭 (공주대학교 건설환경공학부) ;
  • 공석준 (한국환경정책.평가연구원) ;
  • 양금철 (공주대학교 건설환경공학부)
  • 투고 : 2014.08.06
  • 심사 : 2014.12.03
  • 발행 : 2014.12.31

초록

본 연구에서는 2013년 06월부터 2014년 05월까지 1년간 불암산 도시자연공원 상수리나무군락에서 토양호흡량과 미기후 분석을 실시하였다. 토양호흡량과 미생물호흡량은 각가 $28.14{\pm}7.99{\sim}582.47{\pm}318.51mg$, $12.32{\pm}8.04{\sim}415.71{\pm}159.92mg\;CO_2{\cdot}m^{-2}{\cdot}h^{-1}$의 범위로 조사되었다. 또한, 토양호흡량은 계절별로 여름, 가을, 겨울, 봄에 각각 1169.1, 454.81, 72.08, $494.23g\;CO_2{\cdot}m^{-2}{\cdot}month^{-1}$로, 미생물호흡량은 526.20, 340.09, 45.13, $374.9g\;CO_2{\cdot}m^{-2}{\cdot}month^{-1}$로 조사되었다. 연간 토양호흡량과 미생물호흡량은 각각 $2190.22g\;CO_2{\cdot}m^{-2}{\cdot}yr^{-1}$, $1286.33g\;CO_2{\cdot}m^{-2}{\cdot}yr^{-1}$로 조사되었다. 또한, 토양호흡량, 미생물호흡량과 환경요인과의 상관관계에 대해 지수함수를 이용한 회귀식을 적용하여 분석하였다. 토양호흡과 미생물호흡 모두 토양온도와 대기온도에서 정의 상관관계를 보였으나, 토양수분함량과 광량에서는 매우 낮은 상관관계를 나타내었다. 토양호흡량과 미생물호흡량간의 차이로 추정한 뿌리호흡량은 토양호흡량 중 약 33.60%를 차지하는 것으로 나타났다.

The purpose of this study is to analyze the soil $CO_2$ efflux and micro-climate of a preserved forest area located in a Mt. bulam urban nature park Quercus acutissima stand from June 2013 to May 2014. The research showed that the soil and heterotrophic $CO_2$ efflux were $28.14{\pm}7.99$ to $582.47{\pm}318.51$ and $12.32{\pm}8.04$ to $415.71{\pm}159.92mg\;CO_2{\cdot}m^{-2}{\cdot}h^{-1}$, respectively. In addition the seasonal soil $CO_2$ efflux of summer, autumn, winter, spring were 1169.1, 454.81, 72.08 and $494.23g\;CO_2{\cdot}m^{-2}{\cdot}month^{-1}$, respectively. On the other hand, the seasonal heterotrophic $CO_2$ efflux were 526.20, 340.09, 45.13 and $374.9g\;CO_2{\cdot}m^{-2}{\cdot}month^{-1}$, respectively. Moreover, the annual soil and heterotrophic $CO_2$ efflux was found to be 2190.22 and $1286.33g\;CO_2{\cdot}m^{-2}{\cdot}yr^{-1}$, respectively. The exponential function was also utilized for the regression analysis in order to correlate the environmental factors with the soil and heterotrophic $CO_2$ efflux. It was found out that both air and soil temperatures were positively correlated with the soil and heterotrophic $CO_2$ efflux. However, the amount of solar radiation and soil moisture has showed low correlation for both types of $CO_2$ efflux. Contribution of root $CO_2$ efflux to total soil $CO_2$ efflux in this Quercus acutissima stand was 33.60%.

키워드

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