Journal of Wetlands Research (한국습지학회지)

Korean Wetlands Society (한국습지학회)
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Study on effect on CO2 flux of wetland soil by feces of Korean water deer(Hydropotes inermis)

고라니(Hydropotes inermis)의 분변이 습지 토양의 CO2 flux에 미치는 영향

  • Park, Hyomin (Dept. of Environmental Sciences and Engineering, Ewha Womans University) ;
  • Chun, Seunghoon (Dept. of Landscape Architecture, Gachon University) ;
  • Lee, Sangdon (Dept. of Environmental Sciences and Engineering, Ewha Womans University)
  • 박효민 (이화여자대학교 환경공학과) ;
  • 전승훈 (가천대학교 조경학과) ;
  • 이상돈 (이화여자대학교 환경공학과)
  • Received : 2015.06.08
  • Accepted : 2015.08.05
  • Published : 2015.08.31
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Abstract

The total global emission of $CO_2$ from soils is recognized as one of the largest fluxes in the global carbon cycle. Especially it is necessary to quantify the amount of $CO_2$ emitted by the organic material decomposition processes of microorganisms in the soil, because it becomes one of a factor for determining the carbon stocks in the soil. This study was conducted to estimate the impact of the Korean water deer(Hydropotes inermis)' feces to the soil organic matter. Also, effects of Korean water deer' feces on $CO_2$ emissions of soil and land use pattern dependent $CO_2$ flux quantification are studied. The organic materials in the Korean water deer' feces significantly changed organic matter content of soil and influenced the activity of soil microorganisms, both changing of respiration of the soil and physical chemical components in soil. In particular, C/N ratio and the $CO_2$ flux of soil of four regions (Rice paddy, Fallow ground, Salix koreensis community, Phragmites australis community) showed a statistically highly significant correlation (P<0.01) with the presence or absence of feces. $CO_2$ flux of soil affected by the feces was 2-20 times higher than the soil unaffected by the feces. This study has great significance to quantify the extent of the material circulation and its impact to the terrestrial ecosystem and soil zone throughout Korean water deer' feces. Feces of wildlife can affect soil and soil material circulation.

토양으로부터 방출되는 $CO_2$의 양은 전 지구적 지구 탄소 순환에서 가장 큰 방출 중 하나로 알려져 있다. 특히 토양 내 미생물의 유기물질 분해 과정에 의해 방출되는 이산화탄소의 양은 토양의 탄소 저장량을 장기적으로 결정하는 요인이 되므로 그 양을 정량화 하는 것이 필요하다. 본 연구는 토양에서 고라니의 분변이 $CO_2$ 배출에 미치는 영향을 파악하기 위해 수행하였다. 그리고 고라니의 분변이 토양의 $CO_2$ 배출에 주는 영향과 토지의 이용에 따라 변화하는 $CO_2$ flux를 정량화 하였다. 그 결과 고라니 분변 내 많은 유기물질은 토양 미생물의 활성화에 영향을 주고 그로 인해 토양의 호흡 및 토양 내 물리 화학적인 변화가 발생되어 토양의 유기물 함량이 서로 다르게 나타남을 확인할 수 있었다. 특히 4개 지역의 토양(경작지, 휴경지, 버드나무 군락, 갈대습지)의 C/N ratio와 $CO_2$ flux는 분변의 유무와 통계적으로 매우 유의미한 상관 관계를 나타냈으며(P<0.01), 분변의 영향을 받은 토양의 $CO_2$ flux는 분변의 영향을 받지 않은 토양보다 2-20배 더 높은 것으로 나타났다. 이 연구는 고라니의 분변이 토양에 주는 영향과 야생동물 분변을 이용한 토양 물질 순환 연구를 통해 육상 생태계 및 토양권의 물질 순환과 그 영향의 정도를 정량화 하였다는 점에서 큰 의의가 있는 연구이다.

Keywords

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