Litterfall과 토양호흡 측정에 의한 신갈나무 천연림의 지하부 탄소 분배

초록

From published data of mature forests worldwide, Raich and Nadelhoffer sugested that totalbelowground carbon allocation (TBCA) could be estimated from the difference between annual ratesrespiration and litterfall of natural mature oak forests dominated by Quercus mongolica in Korea.Rates of in situ soil respiration and aboveground litter production are highly and positively correlated.Our results disagree with the Raich and Nadelhoffer model for world forests. A regression analysis ofthe data from Q. mongolica forests produced the following relationship: annual soil respiration = 141+ 2.08 . anual litterfall. The least squares regression line has a more gentle slope (2.08) than theour study indicates that, on average, soil respiration is about two times the aboveground litterfall-C,which further implies that TBCA is similar with annual aboveground litterfall-C at natural Q.mongolica forests in Korea. The non-zero Y-intercept (141) of the regression indicates that TBCA maybe greater than litterfall-C where litterfall rate are relativery low. Over a gradient of litterfall-Cranging from 200-370 g C m2yr1, TBCA increased from 350-530 g C.m2yr..

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