Journal of the Korean Society of Environmental Restoration Technology (한국환경복원기술학회지)

The Korea Society of Environmental Restoration Technology (한국환경복원기술학회)
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The Relationship between Disturbances of Hydromorphological Structures and Naturalized Plants Ratio in Small and Mid-sized Streams

중·소하천에서 물리적 구조의 교란과 하안식생 귀화율의 관계

  • Chun, Yeajun (Dept. of Environmental Science and Ecological Engineering, Graduate School, Korea University) ;
  • Choi, Yun Eui (Dept. of Environmental Science and Ecological Engineering, Graduate School, Korea University) ;
  • Hong, Sun Hee (Institute of Environment and Ecology, Korea University) ;
  • Chon, Jinhyung (Division of Environmental Science & Ecological Engineering, Korea University)
  • 천예준 (고려대학교 대학원 환경생태공학과) ;
  • 최윤의 (고려대학교 대학원 환경생태공학과) ;
  • 홍선희 (고려대학교 생명과학대학 환경생태연구소) ;
  • 전진형 (고려대학교 생명과학대학 환경생태공학부)
  • Received : 2012.12.14
  • Accepted : 2013.02.15
  • Published : 2013.02.28
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Abstract

Current ecological stream restoration is focusing on recovery of physical characteristic and ecological functions of individual stream. For effective stream restoration, the relationship between stream environment and riparian flora should be investigated. The purpose of this study is to analyze the relationship between disturbance of hydromorphological structures and naturalized plants ratio in small to mid-sized streams. For the study sites, Gwanpyeong stream, Dongdal stream, and Yongchoo streams were chosen as 'reference stream' while, Gunnam stream, Anchang stream, and Hwa stream were chosen as 'damaged stream'. The hydromorphological structures of streams were evaluated with LAWA and flora of the streams were completely enumerated to calculate naturalized plants ratio. The result showed that there was a significant correlation between the outcome of LAWA and naturalized plants ratio(r=0.675, p<0.01). The result of factor analysis of LAWA identified three factors, 'River front and land use', 'River bed materials and structures', and 'Crossing structure and bar'. Among the factors of hydromorphological structures given by the result of factor analysis, 'river front and land use' and 'bed materials and structures' have statistically significant relationship with naturalized plants ratio($R^2$=0.470, p<0.01). Given this results, quantitative analysis on the relationship between disturbance of hydromorphological structures of streams and naturalized plants ratio could provide some essential information for stream restoration. Also, as this study figured out major factors of hydromorphological structures that affect naturalized plants ratio, it might help monitor ecological states and current problems of small and mid-sized streams.

Keywords

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