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논문 기본 정보

자료유형
학술저널
저자정보
In-Young Choi (Ewha Womans University) Hang Vo-Minh Nguyen (Ewha Womans University) Jung Hyun Choi (Ewha Womans University)
저널정보
대한환경공학회 Environmental Engineering Research Environmental Engineering Research 제22권 제4호
발행연도
2017.12
수록면
347 - 355 (9page)

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초록· 키워드

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This study investigated how the combined changes in environmental conditions and nitrogen (N) deposition influence the mineralization processes and carbon (C) dynamics of wetland soil. For this objective, we conducted a growth chamber experiment to examine the effects of combined changes in environmental conditions and N deposition on the anaerobic decomposition of organic carbon and the emission of greenhouse gases from wetland soil. A chamber with elevated CO₂ and temperature showed almost twice the reduction of total decomposition rate compared to the chamber with ambient atmospheric conditions. In addition, CO₂ fluxes decreased during the incubation under the conditions of ambient CO₂ and temperature. The decrease in anaerobic microbial metabolism resulted from the presence of vegetation, which influences the litter quality of soils. This can be supported by the increase in C/N ratio over the experimental duration. Principle component analysis results demonstrated the opposite locations of loadings for the cases at the initial time and after three months of incubation, which indicates a reduction in the decomposition rate and an increasing C/N ratio during the incubation. From the distribution between the decomposition rate and gas fluxes, we concluded that anaerobic decomposition rates do not have a significantly positive relationship with the fluxes of greenhouse gas emissions from the soil.

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ABSTRACT
1. Introduction
2. Materials and Methods
3. Results
4. Discussion
5. Conclusions
References

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