한국농공학회논문집 (Journal of The Korean Society of Agricultural Engineers)

  • 제60권4호
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  • Pages.123-132
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  • 2018
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  • 1738-3692(pISSN)
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  • 2093-7709(eISSN)
한국농공학회 (The Korean Society of Agricultural Engineers)
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SWAT모형을 이용한 RCP 기후변화 시나리오에 따른 고랭지농업유역의 최적관리기법 평가

Assessment of Climate Change Impact on Best Management Practices of Highland Agricultural Watershed under RCP Scenarios using SWAT

  • Jang, Sun-Sook (Institutes of Green Bio Science and Technology, Seoul National University) ;
  • Kim, Seong-Joon (Department of Civil and Environmental System Engineering, Konkuk University)
  • 투고 : 2016.03.31
  • 심사 : 2018.07.05
  • 발행 : 2018.07.31
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초록

The purpose of this study was to evaluate the reduction effect of non point source (NPS) pollution in Haean highland agricultural catchment ($62.8km^2$) for 13 BMP scenarios under RCP (Representative Concentration Pathway) 4.5 and 8.5 scenarios. Under the present climate condition, the BMP (best management practices) reduction efficiency of SS (suspended solid), T-N (total nitrogen), and T-P (total phosphorus) showed +25.7%, +4.2%, and +16.1% for VFS (vegetative filter strip), +0.1%, +15.6%, and +5.7% for FC (fertilizer control), and +6.3%, -2.9%, and +3.9% for RSM (rice straw mulching) respectively. In general, effective was the best for SS and T-P reductions, and the FC was the best for T-N reduction. The negative effect of T-N on RSM was induced by increase in infiltration and solute transport to baseflow. Under the future climate change scenarios, the SS, T-N, and T-P reduction efficiency showed the range of +1.9~+11.6%, -1.9~+0.2%, and +5.3~+11.9% respectively. The 3 BMPs (VFS, FC, and RSM) application in the future showed negative and little differences (-0.5~+1.6%) for SS and T-N reduction efficiencies while T-P reduction efficiency showed +0.3~+7.6% comparing with the baseline period. To achieve an increase in the reduction efficiency of future SS and T-N by +2~+10%, the combined application of more than two BMPs is necessary.

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참고문헌

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