暖温帯常緑広葉樹林における土壌加温に対する微生物群集の反応 Responses of microbial community to soil warming in warm-temperate evergreen broad-leaved forests

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Author(s)

    • 王 新 Wang Xin
    • 広島大学大学院生物圏科学研究科 Department of Environmental Dynamics and Management, Graduate School of Biosphere Science, Hiroshima University
    • 中坪 孝之 Nakatsubo Takayuki
    • 広島大学大学院生物圏科学研究科 Department of Environmental Dynamics and Management, Graduate School of Biosphere Science, Hiroshima University
    • 佐々木 晶子 [他] Sasaki Akiko
    • 広島大学大学院生物圏科学研究科 Department of Environmental Dynamics and Management, Graduate School of Biosphere Science, Hiroshima University
    • 中根 周歩 Nakane Kaneyuki
    • 広島大学大学院生物圏科学研究科 Department of Environmental Dynamics and Management, Graduate School of Biosphere Science, Hiroshima University

Abstract

暖温帯常緑広葉樹林における土壌加温に対する微生物群集の反応

To elucidate the effect of climate warming on the soil heterotrophic microbial community in warm-temperate, evergreen broad-leaved forests, we conducted a soil-warming experiment in a secondary forest located in the city of Higashi-Hiroshima in western Japan. We established ten trench plots (1 m × 1 m) with root barriers to prevent root regrowth in the forest. The plots were divided into warming and control treatments. Infrared heaters were used to increase the soil temperature of the warming plots by about 2.5℃ for three years. We used phospholipid fatty acid (PLFA) analysis to examine the composition of the soil heterotrophic microbial community. There were no significant differences in the total content of PLFAs (TotPLFAs) and fungal PLFAs (FungPLFAs) between the warming and control plots. However, warming caused an increase in the amount of bacterial PLFAs (BactPLFAs), the result being a lower ratio of FungPLFAs to BactPLFAs (F/B ratio) in the warming plots. In addition, PLFAs characteristic of gram-negative bacteria increased in the warming plots. The results indicated that the soil heterotrophic microbial community in this warm-temperate, evergreen broad-leaved forest was sensitive to climate warming.

Journal

  • Japanese Journal of Forest Environment

    Japanese Journal of Forest Environment 55(2), 139-143, 2013

    The Japanese Society of Forest Environment

Codes

  • NII Article ID (NAID)
    110009804568
  • NII NACSIS-CAT ID (NCID)
    AN00124077
  • Text Lang
    ENG
  • Article Type
    Journal Article
  • ISSN
    0388-8673
  • NDL Article ID
    025280986
  • NDL Call No.
    Z18-493
  • Data Source
    NDL  NII-ELS  IR  J-STAGE 
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