Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Evaluation of SATEEC Daily R Module using Daily Rainfall

일강우를 고려한 SATEEC R 모듈 적용성 평가

  • Woo, Wonhee (Department of Regional Infrastructure Engineering, Kangwon National University) ;
  • Moon, Jongpil (National Academy of Agricultural Science) ;
  • Kim, Nam Won (Water Resources Research Division, Korea Institute of Construction Technology) ;
  • Choi, Jaewan (Department of Regional Infrastructure Engineering, Kangwon National University) ;
  • Kim, Ki-sung (Department of Regional Infrastructure Engineering, Kangwon National University) ;
  • Park, Youn Shik (Department of Regional Infrastructure Engineering, Kangwon National University) ;
  • Jang, Won Seok (Department of Regional Infrastructure Engineering, Kangwon National University) ;
  • Lim, Kyoung Jae (Department of Regional Infrastructure Engineering, Kangwon National University)
  • 우원희 (강원대학교 지역건설공학과) ;
  • 문종필 (국립농업과학원) ;
  • 김남원 (한국건설기술연구원) ;
  • 최재완 (강원대학교 지역건설공학과) ;
  • 김기성 (강원대학교 지역건설공학과) ;
  • 박윤식 (강원대학교 지역건설공학과) ;
  • 장원석 (강원대학교 지역건설공학과) ;
  • 임경재 (강원대학교 지역건설공학과)
  • Received : 2010.04.09
  • Accepted : 2010.08.12
  • Published : 2010.09.30
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Abstract

Soil erosion is an natural phenomenon. However accelerated soil erosion has caused many environmental problems. To reduce soil loss from a watershed, many management practices have been proposed worldwide. To develop proper and efficient soil erosion best management practices, soil erosion rates should be estimated spatially and temporarily. The Universal Soil Loss Equation (USLE) and USLE-based soil erosion and sediment modelling systems have been developed and tested in many countries. The Sediment Assessment Tool for Effective Erosion Control (SATEEC) system has been developed and enhanced to provide ease-of-use interface to the USLE users. However many researchers and decision makers have requested to enhance the SATEEC system for simulation of soil erosion and sediment reflecting effects of single storm event. Thus, the SATEEC R factors were estimated based on 5 day antecedent rainfall data. The SATEEC 2.1 daily R factor was applied to the study watershed and it was found that the R2 and EI values (0.776 and 0.776 for calibration and 0.927 and 0.911 for validation) with the daily R were greater than those (0.721 and 0.720 for calibration and 0.906 and 0.881 for validation) with monthly R, which was available in the SATEEC 2.0 system. As shown in this study, the SATEEC with daily R can be used to estimate soil erosion and sediment yield at a watershed scale with higher accuracy. Thus the SATEEC with daily R can be efficiently used to develop site-specific soil erosion best management practices based on spatial and temporal analysis of soil erosion and sediment yield at a daily-time step, which was not possible with USLE-based soil erosion modeling system.

Keywords

References

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