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.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2013.12
- 수록면
- 789 - 800 (12page)
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초록· 키워드
오류제보하기
N₂O and CH₄ are important greenhouse gases (GHG) along with CO₂ influencing greatly on climate change. Their soil emission rates are highly affected by bio-geo-chemical processes in C and N through the landatmosphere interface. The forest ecosystems are generally considered to be net emission for N₂O; however, net sinks for CH₄ by soil uptake. Soil N₂O and CH₄ emissions were measured at Mt. Taewha in Gwangju, Kyeonggi, Korea. Closed chamber technique was used for surface gas emissions from forest soil during period from May to October 2012. Gas emission measurement was conducted mostly on daytime (from 09:00 to 18:00 LST) during field experiment period (total 25 days). The gas samples collected from chamber for N₂O and CH₄ were analyzed by gas chromatography. Soil parameters were also measured at the sampling plot. GHG averages emissions during the experimental period were 3.11±16.26 μg m<SUP>-2 </SUP>hr<SUP>-1 </SUP>for N₂O, -1.36±11.3 μg m<SUP>-2</SUP> hr<SUP>-1</SUP> for CH₄, respectively. The results indicated that forest soil acted as a source of N₂O, while it acted like a sink of CH₄ on average. On monthly base, means of N₂O and CH₄ flux during May (spring) were 8.38±48.7 μg m<SUP>-2</SUP> hr<SUP>-1</SUP>, and -3.21±31.39 μg m<SUP>-2</SUP> hr<SUP>-1</SUP>, respectively. During August (summer) both GHG emissions were found to be positive (averages of 2.45±20.11 μg m<SUP>-2</SUP> hr<SUP>-1</SUP> for N₂O and 1.36±9.09 μg m<SUP>-2</SUP> hr<SUP>-1 </SUP>for CH₄); which they were generally released from soil. During September (fall) N₂O and CH₄ soil uptakes were observed and their means were -1.35±12.78 μg m<SUP>-2</SUP> hr<SUP>-1</SUP> and -2.56±11.73 μg m<SUP>-2</SUP> hr<SUP>-1</SUP>, respectively. N₂O emission was relatively higher in spring rather than other seasons. This could be due to dry soil condition during spring experimental period. It seems that soil moisture and temperature mostly influence gas production and consumption, and then emission rate in subsoil environment. Other soil parameters like soil pH and chemical composition were also discussed with respect to GHG emissions.
목차
Abstract
1. 서론
2. 연구 내용 및 방법
3. 결과 및 논의
4. 결론
References
참고문헌 (25)
참고문헌 신청
1. [학술지(정기간행물)] - Bartlett, K.B. / 1993 / Review and assessment of methane emissions from wetlands / Chemosphere 26 : 261 ~ 320
2. [단행본] - Brady, N.C. / 1999 / The nature and properties of soils / Prentice Hall : 881 ~
3. [단행본] - Conen, F / 2010 / Nitrous Oxide Emissions from Land-Use and Land-Management Change-in Nitrous Oxide Climate Change / Earthscan : 143 ~ 161
4. [학술지(정기간행물)] - Dunfield, P. / 1993 / Methane production and consumption in temperate and subarctic peat soils: Response to temperature and pH / Soil Biology & Biochemistry 25 : 321 ~ 326
5. [단행본] - IPCC / 2006 / IPCC Guidelines for National Greenhouse Gas Inventories Vol. 1. General Guidance and Reporting / IGES
2. [단행본] - Brady, N.C. / 1999 / The nature and properties of soils / Prentice Hall : 881 ~
3. [단행본] - Conen, F / 2010 / Nitrous Oxide Emissions from Land-Use and Land-Management Change-in Nitrous Oxide Climate Change / Earthscan : 143 ~ 161
4. [학술지(정기간행물)] - Dunfield, P. / 1993 / Methane production and consumption in temperate and subarctic peat soils: Response to temperature and pH / Soil Biology & Biochemistry 25 : 321 ~ 326
5. [단행본] - IPCC / 2006 / IPCC Guidelines for National Greenhouse Gas Inventories Vol. 1. General Guidance and Reporting / IGES
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UCI(KEPA) : I410-ECN-0101-2015-530-001058164