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논문 기본 정보

자료유형
학술저널
저자정보
김건엽 (농촌진흥청) 송범헌 (충북대학교) 홍석영 (농촌진흥청) 고병구 (농촌진흥청) 노기안 (농촌진흥청) 심교문 (농촌진흥청) 장용선 (농촌진흥청)
저널정보
한국토양비료학회 한국토양비료학회지 한국토양비료학회지 제41권 제6호
발행연도
2008.12
수록면
393 - 398 (6page)

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초록· 키워드

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Several researchers have proposed models or equations to predict soil CO<SUB>2</SUB> flux from more readily available biotic and abiotic measurement. Tree commonly used abiotic variables were N mineral and soil temperature and soil water content. This study was conducted to determine CO<SUB>2</SUB> emission to mineral N, soil water content and soil temperature with clay loam and sandy loam in pepper cultivation in 2004~2005. CO<SUB>2</SUB> flux in the upland with different levels of soil water potential was measured at least once in two weeks during the cropping period in the pepper cultivation plots. Soil water potential in the clay loam and sandy loam soils was established at -30kPa and -50kPa by measuring the soil gravimetric water content with two replications. CO<SUB>2</SUB> emission rate from the differently managed plots was highly correlation coefficient to between the mineral N (R=0.830**, 0.876**) and soil temperature (r<SUP>2</SUP>=0.793**, 0.804**) in the clay loam and sandy loam, respectively. However, the relationships between CO<SUB>2</SUB> emission and soil water content were non-significant. CO<SUB>2</SUB> emissions at sandy loam soils was lower to 21~37% than at clay loam soils for both soil water conditions without differences in yield. At difference levels of soil water conditions, CO<SUB>2</SUB> emission at - 50kPa decreased to 37.5% in comparison with that at -30kPa. From the path analysis as to contribution factors of GHGs, it appeared that contribution rate was in the order of soil temperature (54.9%), mineral N (32.7%), and soil moisture content (12.4%).

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UCI(KEPA) : I410-ECN-0101-2014-521-000784508