지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2015.8
- 수록면
- 285 - 294 (10page)
이용수
초록· 키워드
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Ordination has been recognized useful method to analyze the effects of multiple environmental factors on dozens of species in vegetation ecology because of summarizing community data by producing a low-dimensional graphics. Main objective of this study was the application of ordination method, especially principal components analysis (PCA), to analyze the soil characterization on paddy treated by different green manure crops and tillage methods. Treatments included the three tillage treatments and two green manure crops as the following; (ⅰ) moldrotary + rotary tillage without green manure crop (Con), with (ⅱ) hairy vetch (ConHv), and (ⅲ) hairy vetch + green barely (ConHvGb), (ⅳ) rotary tillage without green manure crop (Rot), with (ⅴ) hairy vetch (RotHv), and (ⅵ) hairy vetch + green barly (RotHvGb), and (ⅶ) no-tillage (Notill). Vectorial distance result from PCA of soil properties including physical, chemical, and microbial properties showed the two main difference. Firstly, soil properties among plots without green manure were strongly affected by tillage strength [Vectorial distance: Con-Notil (5.88) 〉Rot-Notill (4.58)] at PC1 (35.0%) axis. But it was difficult to find the fixed trend among plots when green manure crop was added in plot. Nevertheless, two groups were separated by adding green manure crop at PC2 (29.2%) axis. These results show that PCA ordination methods could be used the research for change of soil characterization.
목차
Introduction
Materials and Methods
Results and Discussion
Conclusion
References
참고문헌 (34)
참고문헌 신청
[학술지(정기간행물)] - Abdi, H / 2010 / Principal component analysis / WIREs Computational Statistics 2 : 433 ~ 459
[학술지(정기간행물)] - Ali, M. / 1999 / Evaluation of green manure technology in tropical lowland rice systems / Field Crops Res 61 : 61 ~ 78
[학술지(정기간행물)] - Astier, M. / 2006 / Short-term green manure and tillage management effects on maize yield and soil quality in an Andisol / Soil Till. Res 88 : 153 ~ 159
[학술지(정기간행물)] - Austin, M. P. / 1985 / Continuum concept, ordination methods, and niche theory / Annu. Rev. Ecol. Syst 16 : 39 ~ 61
[학술지(정기간행물)] - Beare, M. H. / 1994 / Waterstable aggregates and organic matter fractions in conventional and no-till soils / Soil Sci. Soc. Am. J 58 : 777 ~ 786
[학술지(정기간행물)] - Ali, M. / 1999 / Evaluation of green manure technology in tropical lowland rice systems / Field Crops Res 61 : 61 ~ 78
[학술지(정기간행물)] - Astier, M. / 2006 / Short-term green manure and tillage management effects on maize yield and soil quality in an Andisol / Soil Till. Res 88 : 153 ~ 159
[학술지(정기간행물)] - Austin, M. P. / 1985 / Continuum concept, ordination methods, and niche theory / Annu. Rev. Ecol. Syst 16 : 39 ~ 61
[학술지(정기간행물)] - Beare, M. H. / 1994 / Waterstable aggregates and organic matter fractions in conventional and no-till soils / Soil Sci. Soc. Am. J 58 : 777 ~ 786
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UCI(KEPA) : I410-ECN-0101-2016-521-001840625