지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
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This study was conducted to find out the soil CO2 emission characteristic due to rainfall pattern and intensity changes. Using Automatic Opening and Closing Chambers (AOCCs), wehave measured annual soil respiration changes in Pinus koraiensis plantation at Seoul NationalUniversity experimental forest in Mt. Taehwa. In addition, we have monitored heterotrophic respirationat trenching sites (4×6 m). Based on the one year data of soil respiration and heterotrophicrespiration, we observed that 24% of soil respiration was derived from root respiration. Duringthe rainy season (end of July to September), soil respiration at trenching site and trenchingwith rainfall interception site were measure during portable soil respiration analyzer (GMP343,Vaisala, Helsinki, Finland). Surprisingly, even after days of continuous heavy rain, soil water contentdid not exceed 20%. Based on this observation, we suggest that the maximum water holdingcapacity is about 20%, and relatively lower soil water contents during the dry season affect the vitaldegree of trees and soil microbe. As for soil respiration under different rain intensity, it wasincreased about 14.4% under 10 mm precipitation. But the high-intensity rain condition, such asmore than 10 mm precipitation, caused the decrease of soil respiration up to 25.5%. Taken together,this study suggests that the pattern of soil respiration can be regulated by not only soil temperaturebut also due to the rain fall intensity.
목차
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참고문헌 (21)
참고문헌 신청
Baldocchi D / 2001 / FLUXNET: A new tool to study the temporal and spatial variability of ecosystem-scale carbon dioxide, water vapor, and energy flux densities / J. Clim 82
Baldocchi D. / 2008 / Breathing of the terrestrial biosphere: Lessons learned from a global network of carbon dioxide flux measurement systems / Aust. J. Bot 56 : 1 ~ 26
Bond-Lamberty Ben / 2004 / Contribution of root respiration to soil surface CO2 flux in a boreal black spruce chronosequence / Tree Physiol 24 : 1387 ~ 1395
Falge E / 2002 / Seasonality of ecosystem respiration and gross primary production as derived from FLUXNET measurements / Agricult. Meteorol 113 : 53 ~ 74
Fang C / 2001 / The dependence of soil CO2efflux on temperature / Soil Biol. Biochem 33 : 155 ~ 165
Baldocchi D. / 2008 / Breathing of the terrestrial biosphere: Lessons learned from a global network of carbon dioxide flux measurement systems / Aust. J. Bot 56 : 1 ~ 26
Bond-Lamberty Ben / 2004 / Contribution of root respiration to soil surface CO2 flux in a boreal black spruce chronosequence / Tree Physiol 24 : 1387 ~ 1395
Falge E / 2002 / Seasonality of ecosystem respiration and gross primary production as derived from FLUXNET measurements / Agricult. Meteorol 113 : 53 ~ 74
Fang C / 2001 / The dependence of soil CO2efflux on temperature / Soil Biol. Biochem 33 : 155 ~ 165
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