Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)

  • 제36권4호
  • /
  • Pages.239-246
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  • 2003
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  • 0367-6315(pISSN)
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  • 2288-2162(eISSN)
Korean Society of Soil Science and Fertilizer (한국토양비료학회)
권호 표지

Evaluation of Microbial Community Composition in Cultivated and Uncultivated Upland Soils by Fatty Acids

지방산에 의한 경지 및 미경지 토양의 미생물군집평가

  • Suh, Jang-Sun (National Institute of Agricultural Science and Technology) ;
  • Chon, Gil-Hyong (National Institute of Agricultural Science and Technology) ;
  • Kwon, Jang-Sik (National Institute of Agricultural Science and Technology) ;
  • Kim, Sang-Hyo (National Institute of Agricultural Science and Technology) ;
  • Baek, Hyung-Jin (National Institute of Agricultural Biotechnology)
  • 서장선 (농업과학기술원 농업환경부) ;
  • 전길형 (농업과학기술원 농업환경부) ;
  • 권장식 (농업과학기술원 농업환경부) ;
  • 김상효 (농업과학기술원 농업환경부) ;
  • 백형진 (농업생명공학연구원 유전자원과)
  • 투고 : 2003.07.05
  • 심사 : 2003.07.25
  • 발행 : 2003.08.30
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초록

We examined the relationships among community composition, microbial population, and microbial biomass to determine whether different land use leads to differences in microbial community composition. And also the relationships between soil characteristics and microbial community composition were investigated. There was no difference in pH between uncultivated and cultivated soils, but electrical conductivity, and contents of organic matter, available P and exchangeable cations were greater in the cultivated soil compared to the uncultivated soil. A linear correlation ($r^2=0.557$, n=18, p<0.01) was found between biomass-C estimated with fumigation extraction technique and total amount of fatty acids. An increase of fatty acid methyl esters (FAMEs) for bacteria, actinomycetes, fungi and protozoa was observed in cultivated soil.

경지이용이 토양 화학성과 미생물 군집상에 어떠한 영향이 있는지 경지 및 미경지 토양을 채취하여 토양지방산, 미생물밀도 및 미생물체량간(biomass C)의 관계를 조사하였다. 경지와 미경지 토양의 pH는 큰 차이가 없었지만, 전기전도도 (EC), 유기물, 유효인산 및 치환성 양이온 함량은 미경지 토양에 비해 경지토양에서 높았다. 훈증추출법에 의해 측정된 미생물체량과 지방산 총 함량간에는 유의한 정의 상관관계가 있었다 ($r^2=0.557$, n=18, p<0.01). 세균, 방선균, 사상균, 원생동물을 나타내는 지표성 지방산 함량은 경지토양에서 높은 경향을 보였다.

키워드

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