Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
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Assessment of the Impacts of the Impervious Surface Change in the Farm Region on Watershed Hydrology

농경지 불투수면 변화에 따른 유역 수문 영향 분석

  • 김학관 (서울대학교 농업생명과학연구원) ;
  • 이은정 (서울대학교 대학원) ;
  • 박승우 (서울대학교 조경.지역시스템공학부.농업생명과학연구원) ;
  • 강문성 (서울대학교 조경.지역시스템공학부.농업생명과학연구원)
  • Published : 2009.11.30
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Abstract

The Soil and Water Assessment Tool (SWAT) model was used in this study to evaluate the hydrologic impacts by the impervious surface change in the farm region. The model was calibrated and validated by using four years (1999-2002) of measured data for the Gyeongancheon watershed in Korea. The simulation results agreed well with observed values during the calibration and validation periods. Land use scenarios including various changes of the plastic film house area in the farm region were applied to assess their effects on watershed hydrology. The results indicated that the surface direct (5.6%~14.0%) and total runoff (0.8%~1.5%) increased, but the groundwater discharge (10.7%~27.7%) and evapotranspiration (1.5%~3.3%) decreased as the plastic film house area (5.7%~12.4%) increased.

Keywords

References

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