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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 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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인용문헌
참고문헌 (22)
참고문헌 신청
Akinremi, O. O. / 1999 / Effects of soil temperature and moisture on soil respiration in barley and fallow plots / Can. J. Soil Sci 79:5~13
Andersson, S. / 2001 / Influence of pH and temperature on microbial activity, substrate availability and leaching of dissolved organic carbon in a mor humus / Soil Biology and Biochemistry 33:1181~1191
Bouma, Tjeerd J. / 2000 / On the assessment of root and soil respiration for soils of different textures: interactions with soil moisture contents and soil CO2 concentrations / Plant and Soil 227:215~221
Buyanovsky G. A. / 1986 / Soil respiration in a winter wheat ecosystem / Soil Sci. Soc. Am. J 50:338~344
Dilustro, J. / 2005 / Moisture and soil texture effects on soil CO2 efflux components in southeastern mixed pine forests / Forest Ecology and Management 204:85~95
Andersson, S. / 2001 / Influence of pH and temperature on microbial activity, substrate availability and leaching of dissolved organic carbon in a mor humus / Soil Biology and Biochemistry 33:1181~1191
Bouma, Tjeerd J. / 2000 / On the assessment of root and soil respiration for soils of different textures: interactions with soil moisture contents and soil CO2 concentrations / Plant and Soil 227:215~221
Buyanovsky G. A. / 1986 / Soil respiration in a winter wheat ecosystem / Soil Sci. Soc. Am. J 50:338~344
Dilustro, J. / 2005 / Moisture and soil texture effects on soil CO2 efflux components in southeastern mixed pine forests / Forest Ecology and Management 204:85~95
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UCI(KEPA) : I410-ECN-0101-2014-521-000784508