Journal of Forest and Environmental Science

  • 제29권4호
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  • Pages.314-323
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  • 2013
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  • 2288-9744(pISSN)
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  • 2288-9752(eISSN)
강원대학교 산림과학연구소 (Institute of Forest Science, kangwon National University)
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산사태 붕괴사면에 있어서 표면침식에 영향을 미치는 강우강도와 그에 따른 유출토사량의 변화

Rainfall Intensity Regulating Surface Erosion and Its Contribution to Sediment Yield on the Hillslope Devastated by a Shallow Landslide

  • 권세명 (강원대학교 산림환경과학대학 산림자원학과) ;
  • 서정일 (공주대학교 산업과학대학 산림자원학과) ;
  • 조호형 (일본 홋카이도대학 대학원 농학원) ;
  • 김석우 (강원대학교 산림환경과학대학 산림자원학과) ;
  • 이동균 (강원대학교 산림환경과학대학 산림자원학과) ;
  • 지병윤 (국립산림과학원 산림생산기술연구소) ;
  • 전근우 (강원대학교 산림환경과학대학 산림자원학과)
  • Kwon, Se Myoung (Department of Forest Resources, College of Forest and Environmental Sciences, Kangwon National University) ;
  • Seo, Jung Il (Department of Forest Resources, College of Industrial Sciences, Kongju National University) ;
  • Cho, Ho Hyoung (Graduate School of Agriculture, Hokkaido University) ;
  • Kim, Suk Woo (Department of Forest Resources, College of Forest and Environmental Sciences, Kangwon National University) ;
  • Lee, Dong Kyun (Department of Forest Resources, College of Forest and Environmental Sciences, Kangwon National University) ;
  • Ji, Byoung Yun (Forest Practice Research Center, Korea Forest Research Institute) ;
  • Chun, Kun-Woo (Department of Forest Resources, College of Forest and Environmental Sciences, Kangwon National University)
  • 투고 : 2013.06.25
  • 심사 : 2013.10.22
  • 발행 : 2013.11.30
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초록

To examine surface erosion and sediment export patterns on a hillslope, which was devastated by a shallow landslide and which was slowly revegetating by natural plant species, we surveyed variations in surface erosion depth on the upper-, middle- and lower-section of the hillslope, and subsequent sediment yield from the whole hillslope. The result showed that, with the passing of year, surface erosion on the devastated hillslope was regulated by higher rainfall intensity due to the supply-limitation of exportable sediment, and its variation range decreased. In addition, surface erosion on the upper-section with steep slope was regulated by higher rainfall intensity, which might result in raindrop erosion, compared to it on the lower-section with relatively gentle slope. Besides, the sediment yield from the devastated hillslope had nonlinear relationship with surface erosion depth on the hillslope because sediments on the hillslope are exported downwards while repeating their cycle of transport and redistribution. Our findings suggest the establishment of management strategy to prevent sediment-related disasters occurred during torrential rainfall events, which was based on the continuous field investigation on the hillslope devastated by landslides.

키워드

참고문헌

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