Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Analysis of Effect of Ditch Restoration on Soil Loss Reduction in Highland Agricultural Fields

고랭지밭의 구거복원에 따른 토양유실저감 효과분석

  • Sung, Yunsoo (Total Maximum Daily Load Management Division, Wonju Regional Environment Office) ;
  • Kim, Dong Jin (Total Maximum Daily Load Management Division, Wonju Regional Environment Office) ;
  • Lee, Suin (Watershed and Total Load Management Research Division, National Institute of Environment) ;
  • Ryu, Jichul (Watershed and Total Load Management Research Division, National Institute of Environment) ;
  • Kim, Jonggun (Department of Regional Infrastructure Eng., Kangwon National University) ;
  • Lim, Kyoung Jae (Department of Regional Infrastructure Eng., Kangwon National University) ;
  • Kim, Ki Sung (Department of Regional Infrastructure Eng., Kangwon National University)
  • 성윤수 (원주지방환경청 수질총량관리과) ;
  • 김동진 (원주지방환경청 수질총량관리과) ;
  • 이수인 (국립환경과학원 유역총량연구과) ;
  • 류지철 (국립환경과학원 유역총량연구과) ;
  • 김종건 (강원대학교 지역건설공학과) ;
  • 임경재 (강원대학교 지역건설공학과) ;
  • 김기성 (강원대학교 지역건설공학과)
  • Received : 2020.08.18
  • Accepted : 2020.09.21
  • Published : 2020.09.30
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Abstract

Soil loss is a serious problem frequently caused by local torrential rainfalls due to climate change. In particular, soil loss is occurring in agricultural areas rather than urban areas, and many pollutants are introduced into rivers, causing environmental problems. To reduce soil loss, the Ministry of Environment has designated and managed non-point source management areas. The Jaun-district in Hongcheon-gun, which was designed as a non-point pollution source management area in Gangwon-do, is located in the upper stream of Soyang Lake. Most of the agricultural fields are composed of highland agriculture fields. The highland agricultural fields in the Jaun-district are also composed of large-scale farming areas, and the ditches located near the agricultural fields have been illegally used for farmland. Therefore, the local government in Hongcheon-gun is conducting a project to restore the ditches occupied by agricultural fields. However, an analysis of the amount of soil loss that can be reduced by the restoration of the ditches has not been conducted yet. Thus, the purpose of this study was to analyze the effect of reducing the soil loss from the restoration of the ditches used as agricultural fields in the Jaun-district. The SATEEC L Module was used to analyze the reduction in soil loss by ditch restoration. The SATEEC L Module was constructed to estimate the LS factor using Moore and Burch's method after calculating the slope length using the digital elevation model and the maximum allowable slope length. The LS factor and the USLE formula were used to estimate the amount of soil loss that could be reduced by ditch restoration. The analysis showed that the ditch restoration could reduce about 16.6% of the soil loss in the Jaun-district. The results of this study will contribute to the study of methods to reduce soil loss in non-point pollution management areas.

Keywords

References

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