강우 이벤트가 태화산 잣나무 식재림의 각 발생원별 CO2 발생량에 미치는 영향
The Effect of Rain Fall Event on CO2 Emission in Pinus koraiensis Plantation in Mt. Taehwa
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참고문헌
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초록
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.
Abstract
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.
참고문헌 (21)
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