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학제간연구 과학기술학 뇌인지과학 기술정책 기타 복합학

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논문 기본 정보

자료유형
학술저널
저자정보
You-Seok Lee (Jeollanam-do Agricultural Research and Extension Services) Jeong-Hwa Kang (Jeollanam-do Agricultural Research and Extension Services) Kyeong-Ju Choi (Jeollanam-do Agricultural Research and Extension Services) Seong Tae Lee (Gyeongsangnam-do Agricultural Research and Extension Services) Eun-Seok Kim (Gyeongsangnam-do Agricultural Research and Extension Services) Eun-Seok Kim (Gyeongsangnam-do Agricultural Research and Extension Services) Young Han Lee (Gyeongsangnam-do Agricultural Research and Extension Services)
저널정보
한국토양비료학회 한국토양비료학회지 한국토양비료학회지 제44권 제1호
발행연도
2011.2
수록면
118 - 126 (9page)

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초록· 키워드

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Ester-linked fatty acid methyl ester (EL-FAME) profiles were used to describe differences in soil microbial communities influenced by conventional farming system (CFS), and organic farming system (OFS) in controlled horticultural land. Soil physicochemical properties and soil microbial communities were determined in the experimental fields. Higher organic matter content in OFS reduced soil bulk density which in turn increased the soil porosity. Generally, soil chemical properties in OFS were higher than those of CFS, but EC value in OFS was significantly lower than that of CFS. With the exception of Fe content, other macronutrient contents and pH in both farming system decreased with the soil depth. Soil microbial biomass of OFS was approximately 1.3 times in topsoil and 1.8 times in subsoil higher than those of CFS. Lower ratios of cy17:0 to 16:1ω7c and cy19:0 to 18:1ω7c were found in the CFS soils than the OFS soils, indicating that microbial stress decreased. The ratio of MUFA to SFA was higher in OFS due to organic input to the soil. In principal components analysis (PCA), the first variable accounted for 54.3%, while the second for 27.3%, respectively. The PC1 of the PCA separated the samples from CFS and OFS, while the PC2 of the PCA separated the samples from topsoil and subsoil. EL-FAMEs with the positive eigenvector coefficients for PC1 were cy17: 0 to 16:1ω7c ratio, cy19:0 to 18:1ω7c ratio, soil pH, soil organic matter, and soil NO<SUB>3</SUB>-N content. Our findings suggest that the shifting cy19:0 to 18:1ω7c ratio should be considered as potential factors responsible for the clear microbial community differentiation observed between different cultivation systems and soil depth in controlled horticultural land.
#Ester-linked fatty acid methyl ester (EL-FAME) #Microbial community #Organic system

목차

Introduction
Materials and Methods
Results and Discussion
Conclusion
References

참고문헌 (51)

참고문헌 신청
Allison, F.E / 1973 / Soil organic matter and its role in crop production / Elseviere google schola Altieri, M.A / 2002 / Agroecology,In the sceience of natural resource managemen for poor farmers in marginal environments / Agriculture, Ecosystem and Environment 93:1~24 google schola Balser, T. / 2005 / Using lipid analysis and hyphal length to quantify AM and saprotrophic fungal abundance along a soil chronosequence / Soil Biol. Biochem 37:601~604 google schola Blake, G.R / 1986 / Bulk density / ASA, and SSSA :363~375 google schola Blake, G.R / 1986 / Particle density / ASA, and SSSA :377~382 google schola

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