Effects of environmental factors upon variation in soil respiration of a Zoysia japonica grassland, central Japan

Tomoharu Inoue, Hiroshi Koizumi

    Research output: Contribution to journalArticle

    22 Citations (Scopus)

    Abstract

    The effects of environmental factors on seasonal and annual variations in soil respiration were examined in the cool temperate Zoysia japonica grassland of Japan. Field measurements of soil respiration were conducted using a closed chamber method with an infrared gas analyzer at monthly intervals in the snow-free seasons from May 2007 to December 2009. There was an exponential relationship between soil respiration and soil temperature, and the soil temperature accounted for 85-86% of seasonal soil respiration variability. Moreover, a positive linear relationship between soil respiration and soil water content was detected in summer (R 2 = 0.55, p < 0.001), but not in spring or autumn. Annual soil respiration was estimated at 755, 719, and 1,037 g C m -2 year -1 in 2007, 2008, and 2009, respectively. These interannual variations in soil respiration might be influenced by the strength of precipitation during rainy seasons and the timing of each snow-melt. Our results suggest that the effects of rainfall and snow-melt events on soil respiration might be important factors to understand carbon dynamics in grassland ecosystem in Japan.

    Original languageEnglish
    Pages (from-to)445-452
    Number of pages8
    JournalEcological Research
    Volume27
    Issue number2
    DOIs
    Publication statusPublished - 2012 Mar

    Fingerprint

    Zoysia japonica
    soil respiration
    environmental factor
    grasslands
    grassland
    Japan
    environmental factors
    snow
    soil temperature
    annual variation
    melt
    effect
    soil water content
    wet season
    seasonal variation
    soil water
    autumn
    water content
    gases
    rain

    Keywords

    • Controlling factors
    • Long-term measurement
    • Precipitation
    • Snow melt
    • Soil CO flux

    ASJC Scopus subject areas

    • Ecology, Evolution, Behavior and Systematics

    Cite this

    Effects of environmental factors upon variation in soil respiration of a Zoysia japonica grassland, central Japan. / Inoue, Tomoharu; Koizumi, Hiroshi.

    In: Ecological Research, Vol. 27, No. 2, 03.2012, p. 445-452.

    Research output: Contribution to journalArticle

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