Journal of Wetlands Research (한국습지학회지)

Korean Wetlands Society (한국습지학회)
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Impact of Climate Change on Habitat of the Rhynchocypris Kumgangensis in Pyungchang River

기후변화가 평창강 금강모치의 생태서식 환경에 미치는 영향 평가

  • Received : 2013.02.04
  • Accepted : 2013.05.18
  • Published : 2013.05.31
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Abstract

This study tried to analyze the impact of climate change on ecological habitat. In this regard, the Rhynchocypris Kumgangensis was selected among the CBIS(Climate-sensitive Biologocal Indicator Species) suggested by the Ministry of Environment. And ecological habitat and restrictive conditions for its survival was surveyed. Future runoff and water quality in the upstream of Pyungchang river were simulated by appling climate change scenarios to SWAT model which is able to simulate water quality. The estimated results explained characteristics on the increase of runoff, BOD, and water temperature and the decrease of DO in the future. The restrictive condition on ecological habitat of the Rhynchocypris Kumgangensis was used water quality during the April to May spawning season since BOD and DO were satisfactory as the first grade of water criteria in the estimated result of future water quality. As a result, it was analyzed that habitat of the Rhynchocypris Kumgangensis in the present was possible about 50~60% of the river. But the habitat would be decreased gradually in the future and would be possible in a very small part of the river in the long term.

본 연구에서는 기후변화가 수생태의 서식환경 변화에 미치는 영향을 분석하고자 하였다. 이를 위하여 환경부에서 제시한 대표 기후변화 지표종 중에서 금강모치를 선정하고 금강모치에 대한 생태서식 특성과 서식 제한조건을 조사하였다. 그리고 기후변화 시나리오를 수질모의가 가능한 SWAT 모형에 적용하여 평창강 상류를 대상으로 미래 유량과 수질을 모의하였다. 대상 하천에 대한 분석 결과 미래의 유량, BOD, 수온의 증가와 DO의 감소 특성을 확인할 수 있었다. 수생태 서식 적합성 검토를 위해 대표어종인 금강모치에 대한 생태서식 환경의 제한 조건을 산란기인 4월과 5월의 수질로 설정하였다. 미래 수질 분석에 대한 평가 결과, BOD와 DO는 1급수 수준으로 양호한 것으로 나타났기 때문에 수온에 대한 제한조건을 통하여 금강모치의 서식이 가능한 공간을 구분하였다. 그 결과, 대상하천 구간내에서 현재 약 50~60% 정도가 금강모치의 생태 서식이 가능한 구간인 것으로 분석되었지만 미래로 진행될수록 서식처가 점차 감소하는 것으로 나타났으며 장기적으로는 극히 일부구간에서만 서식 가능한 것으로 분석되었다.

Keywords

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