20150128

AuthorMo, W. Lee, M. S. Uchida, M. Inatomi, M. Saigusa, N. Mariko, S. Koizumi, H.
Year : 2005
TitleSeasonal and annual variations in soil respiration in a cool-temperate deciduous broad-leaved forest in Japan
Journal : Agricultural and Forest Meteorology
Comment Soil temperature exerted principle control on the seasonal and annual variation of soil respiration. Furthermore, reduced soil water content decreased soil respiration in summer when droughts occurred. The temperature function driven on a seasonal scale showed large variations in seasonal Q10 and R0 (simulated soil respiration at a soil temperature of 0 ℃), e.g. a higher Q10 and lower R0 in spring and a lower Q10 and higher R0 in autumn. These large variations in seasonal Q10 and R0 might reflect confounding effects of temperature sensitivity and seasonal changes in physiological activities induced by root phenology, microbial biomass, and other factors. These results suggest that if the objective is to simulate soil respiration in a particular season, a seasonal Q10 function derived from the target period must be used.

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