NDLI: Effects of rainfall events on soil CO$_{2}$ flux in a cool temperate deciduous broad-leaved forest

Content Provider	Springer Nature Link
Author	Lee, Mi sun Nakane, Kaneyuki Nakatsubo, Takayuki Mo, Wen hong Koizumi, Hiroshi
Copyright Year	2002
Abstract	The effects of rainfall events on soil CO$_{2}$ fluxes were examined in a cool temperate Quercus/Betula forest in Japan. The soil CO$_{2}$ fluxes were measured using an open-flow gas exchange system with an infrared gas analyzer in the snow-free season from August 1999 to November 2000. Soil CO$_{2}$ flux showed no significant diurnal trend on days without rain. In contrast, rainfall events caused a significant increase in soil CO$_{2}$ flux. To determine the effect of rainfall events and to evaluate more precisely the daily and annual soil carbon flux, we constructed a multiple polynomial regression model that included two variables, soil temperature and soil water content, using the soil CO$_{2}$ flux data recorded on sunny days. Daily soil carbon fluxes on sunny days calculated by the model were almost the same as those determined by the field measurements. On the contrary, the fluxes measured on rainy days were significantly higher than those calculated daily from the soil carbon fluxes by the model. Annual soil carbon fluxes in 1999 and 2000 were estimated using models that both do and do not take rainfall effects into consideration. The result indicates that post-rainfall increases in soil CO$_{2}$ flux represent approximately 16–21% of the annual soil carbon flux in this cool temperate deciduous forest.
Starting Page	401
Ending Page	409
Page Count	9
File Format	PDF
ISSN	09123814
Journal	Ecological Research
Volume Number	17
Issue Number	3
e-ISSN	14401703
Language	English
Publisher	Springer-Verlag
Publisher Date	2002-01-01
Publisher Place	Tokyo
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	cool temperate deciduous forest rainfall event soil CO$_{2}$ flux soil temperature soil water content Behavioural Sciences Ecology Evolutionary Biology Forestry Plant Sciences Zoology
Content Type	Text
Resource Type	Article
Subject	Ecology, Evolution, Behavior and Systematics

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