%0 Journal Article
%T Monitoring soil respiration using an automatic operating chamber in a Gwangneung temperate deciduous forest
%A Jae-Seok Lee*
%J Journal of Ecology and Field Biology
%D 2011
%I 
%X This study was conducted to quantify soil CO2 efflux using the continuous measurement method and to examine the applicabilityof an automatic continuous measurement system in a Korean deciduous broad-leaved forest. Soil respirationrate (Rs) was assessed through continuous measurements during the 2004-2005 full growing seasons using an automaticopening/closing chamber system in sections of a Gwangneung temperate deciduous forest, Korea. The study site was anold-growth natural mixed deciduous forest approximately 80 years old. For each full growth season, the annual Rs, whichhad a gap that was filled with data using an exponential function derived from soil temperature (Ts) at 5-cm depth, andRs values collected in each season were 2,738.1 g CO2 m-2 y-1 in 2004 and 3,355.1 g CO2 m-2 y-1 in 2005. However, the diurnalvariation in Rs showed stronger correlations with Ts (r = 0.91, P < 0.001 in 2004, r = 0.87, P < 0.001 in 2005) and air temperature(Ta) (r = 0.84, P < 0.001 in 2004, r = 0.79, P < 0.001 in 2005) than with deep Ts during the spring season. However,the temperature functions derived from the Ts at various depths of 0, -2, -5, -10, and -20 cm revealed that the correlationcoefficient decreased with increasing soil depth in the spring season, whereas it increased in the summer. Rs showed aweak correlation with precipitation (r = 0.25, P < 0.01) and soil water content (r = 0.28, P < 0.05). Additionally, the diurnalchange in Rs revealed a higher correlation with Ta than that of Ts. The Q10 values from spring to winter were calculatedfrom each season¡¯s dataset and were 3.2, 1.5, 7.4, and 2.7 in 2004 and 6.0, 3.1, 3.0, and 2.6 in 2005; thus, showing high fluctuationwithin each season. The applicability of an automatic continuous system was demonstrated for collecting a highresolution soil CO2 efflux dataset under various environmental conditions.
%K automatic continuous measurement system
%K soil respiration
%K temperate deciduous forest
%U http://ocean.kisti.re.kr/is/mv/showPDF_ocean.jsp?method=download&pYear=2011&koi=KISTI1.1003%2FJNL.JAKO201101152701640&sp=411&CN1=JAKO201101152701640&poid=kesk&kojic=STHHCL&sVnc=v34n4&sFree=