내륙습지와 갯벌에서의 주요 온실기체 배출량 특성연구 (Characteristics of Greenhouse Gas Emissions from Freshwater Wetland and Tidal Flat in Korea)

서지정보

· 발행기관 : 한국대기환경학회
· 수록지 정보 : 한국대기환경학회지 / 29권 / 2호 / 171 ~ 185페이지
· 저자명 : 김득수, 나운성

초록

Wetland has been known as a major biogenic source of CH4 in globe. In a global scale, the amounts of 55~150 Tg CH4 are released into the atmosphere annually from wetlands; and it accounts for about 21% of total CH4 annual global emission. From August 2010 to August 2011, measurements of major greenhouse gas (CO2, CH4, N2O) emissions were conducted from a freshwater wetland at Kunsan (35˚ 56′38.94′′N, 126˚43′16.62′′E), Korea by using floating closed static chamber method. Flux measurements for these gases from western coastal tidal flat at Seocheon (36˚ 07′13.85′′N, 126˚ 35′43.18′′E), Korea were managed from July 2011 to February 2012 by using closed static chamber method. The average gas fluxes and ranges from freshwater wetland experiment were 0.155 ±0.29 mg m-2 hr-1 (-0.054~0.942 mg m-2 hr-1) for CH4, 17.30±73.27 mg m-2 hr-1 (-52.44~261.66 mg m-2 hr-1) for CO2, and 0.004±0.01 mg m-2 hr-1 (-0.02~0.07 mg m-2 hr-1) for N2O, respectively. Monthly base flux measurement results revealed that CH4 fluxes during summer months in high water temperature were significantly high, and at least order of one higher than those during other months. The average fluxes and ranges of these greenhouse gases from tidal flat during the experimental period were 0.002±0.08 mg m-2 hr-1 (-0.16~0.22 mg m-2 hr-1) for CH4, -31.18±75.33 mg m-2 hr-1 (-298.87~101.93 mg m-2 hr-1) for CO2, and 0.001±0.01 mg m-2 hr-1 (-0.017~0.03 mg m-2 hr-1) for N2O, respectively. Comparing the results of gas emissions from tidal flat to those from freshwater wetland, we found significantly lower emissions from tidal flat based on the experiment. Physicochemical parameters of water and soil at these experimental plots were also sampled and analyzed for understanding their correlation with these gas emissions.

영어초록

Wetland has been known as a major biogenic source of CH4 in globe. In a global scale, the amounts of 55~150 Tg CH4 are released into the atmosphere annually from wetlands; and it accounts for about 21% of total CH4 annual global emission. From August 2010 to August 2011, measurements of major greenhouse gas (CO2, CH4, N2O) emissions were conducted from a freshwater wetland at Kunsan (35˚ 56′38.94′′N, 126˚43′16.62′′E), Korea by using floating closed static chamber method. Flux measurements for these gases from western coastal tidal flat at Seocheon (36˚ 07′13.85′′N, 126˚ 35′43.18′′E), Korea were managed from July 2011 to February 2012 by using closed static chamber method. The average gas fluxes and ranges from freshwater wetland experiment were 0.155 ±0.29 mg m-2 hr-1 (-0.054~0.942 mg m-2 hr-1) for CH4, 17.30±73.27 mg m-2 hr-1 (-52.44~261.66 mg m-2 hr-1) for CO2, and 0.004±0.01 mg m-2 hr-1 (-0.02~0.07 mg m-2 hr-1) for N2O, respectively. Monthly base flux measurement results revealed that CH4 fluxes during summer months in high water temperature were significantly high, and at least order of one higher than those during other months. The average fluxes and ranges of these greenhouse gases from tidal flat during the experimental period were 0.002±0.08 mg m-2 hr-1 (-0.16~0.22 mg m-2 hr-1) for CH4, -31.18±75.33 mg m-2 hr-1 (-298.87~101.93 mg m-2 hr-1) for CO2, and 0.001±0.01 mg m-2 hr-1 (-0.017~0.03 mg m-2 hr-1) for N2O, respectively. Comparing the results of gas emissions from tidal flat to those from freshwater wetland, we found significantly lower emissions from tidal flat based on the experiment. Physicochemical parameters of water and soil at these experimental plots were also sampled and analyzed for understanding their correlation with these gas emissions.

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