Journal of Wetlands Research (한국습지학회지)

Korean Wetlands Society (한국습지학회)
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An Ecological Restoration of Urban Streams by Supplying Maintenance Water

도시하천의 유지용수 공급에 따른 생태복원

  • Cho, Hong Je (Department of Civil & Environmental Engineering, Ulsan university) ;
  • Lee, Su Ji (Department of Civil & Environmental Engineering, Ulsan university)
  • 조홍제 (울산대학교 건설환경공학과) ;
  • 이수지 (울산대학교 건설환경공학과)
  • Received : 2013.03.26
  • Accepted : 2013.05.30
  • Published : 2013.08.31
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Abstract

The aim of this study is to compare the effects of the maintenance water supply methods on the ecological restoration of 5 urban streams such as Mugeo cheon, Yaksa cheon, Yeocheon cheon, Myeongjeong cheon and Cheokgwa cheon in Ulsan metropolitan city. Water quality of the streams have been innovatively improved and the ecosystems have gradually been restored by supplying maintenance water constantly. However, we found that if the maintenance water was in a state of higher salinity or low quality, even enough supply was not helpful and even harmful for ecological restoration. We confirmed that the most important things to create or maintain from the urban stream to the ecological stream are that facilities like a walkway construction should be installed at least, supplying appropriate maintenance water, and a connection with the main stream.

울산시의 대표적인 5개 도시하천인 무거천, 약사천 여천천, 명정천 및 척과천 등 5개 하천을 대상으로 유지용수 공급방법과 그에 따른 생태복원 정도를 조사하여 비교 검토하였다. 유지용수의 지속적인 공급으로 하천의 수질을 획기적으로 개선시킬 수 있었고 생태계가 점진적으로 복원되는 것을 확인할 수 있었다. 하지만 염도가 높거나 수질이 좋지 못한 유지 용수는 비록 많은 양을 공급하더라도 생태계 복원에 도움이 되지 못하거나 오히려 악영향을 미칠 수 있는 것으로 확인되었다. 하폭이 좁은 도시하천을 생태하천으로 조성하거나 유지하기 위해서는 산책로 조성 등 시설물 설치는 최소화해야 하고, 적절한 유지용수 확보와 본류 하천과의 연결성이 가장 중요한 것으로 판단되었다.

Keywords

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