Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)

Korean Society of Soil Science and Fertilizer (한국토양비료학회)
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Relationship of Topography and Microbial Community from Paddy Soils in Gyeongnam Province

경남지역 논 토양 지형과 미생물 군집의 관계

  • Lee, Young-Han (Gyeongsangnam-do Agricultural Research and Extension Services) ;
  • Ahn, Byung-Koo (Jeollabuk-do Agricultural Research and Extension Services) ;
  • Sonn, Yeon-Kyu (National Academy of Agricultural Science, RDA)
  • Received : 2011.11.17
  • Accepted : 2011.12.02
  • Published : 2011.12.31
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Abstract

The present study was aimed to evaluate the soil microbial communities by fatty acid methyl ester (FAME) method in paddy soils at 20 sites in Gyeongnam Province. The soil microbial biomass carbon content of fan and valley $1,266mg\;kg^{-1}$ was higher than alluvial plain $578mg\;kg^{-1}$ (p<0.05). In addition, The dehydrogenase activity of fan and valley $204{\mu}g\;TPF\;g^{-1}\;24h^{-1}$ was higher than alluvial plain $93{\mu}g\;TPF\;g^{-1}\;24h^{-1}$ (p<0.05). The communities of total bacteria and Gram-negative bacteria in the fan and valley paddy soils were significantly higher than those in the alluvial plain paddy soils (p<0.05). Total bacteria communities should be considered as a potential responsible factor for the obvious microbial community differentiation that was observed between the fan and valley and alluvial plain in paddy soils.

경남지역 논 토양 곡간 및 선상지 10개소와 하성평탄지 10개소를 대상으로 2011년에 미생물 세포벽 지방산 함량을 분석하여 미생물 다양성을 주성분분석으로 해석하였다. 토양 미생물체량은 곡간 및 선상지가 $1,266mg\;kg^{-1}$으로 하성평탄지 $578mg\;kg^{-1}$ 보다 유의적으로 많았으며 탈수소효소 활성도 곡간 및 선상지가 $204{\mu}g\;TPF\;g^{-1}\;24h^{-1}$으로 하성평탄지 $93{\mu}g\;TPF\;g^{-1}\;24h^{-1}$보다 유의적으로 많았다. 논 토양 평균 미생물 군집은 곡간 및 선상지가 총 세균이 32.9%, 그람음성 세균은 17.7%로서 하성평탄지의 총 세균 30.3%, 그람음성 세균 15.2%에 비해 유의적으로 많았다. 주성분 분석 결과 토양 유기물 함량과 총 세균 군집 비율이 경남지역 논 토양의 곡간 및 선상지와 하성평탄지의 특성을 구분할 수 있었다.

Keywords

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