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2018 Vol.51, Issue 7 Preview Page

Research Article

Effects of climate change and reduction method on water quality in Cheongmicheon watershed

기후 변화에 따른 청미천 유역의 수질 변화 및 저감 대책에 관한 연구

Jisun Byuna
,
Minwoo Sona*
변 지선a
,
손 민우a*
aDepartment of Civil Engineering, Chungnam National University
a충남대학교 공과대학 토목공학과
* Corresponding Author
July 2018. pp. 585-597
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Abstract

This study aims to investigate the variation of water quality and discharge under the condition of climate change and Best Management Practices (BMPs), which is one of the reduction methods for non-point source pollution. Soil and Water Assessment Tool (SWAT) model is applied to case in Cheongmicheon watershed. The coefficients required for SWAT model were calibrated using SWAT Calibration and Uncertainty Program. Climate change is considered by using Representative Concentration Pathway (RCP) scenarios, RCP 4.5 and RCP 8.5. It is known from simulation results that the non-point source pollutant increases under the climate change scenario assuming worse condition. It is also found in this study that an appropriate application of BMPs is able to reduce the quantity and temporal variation of non-point source pollutant effectively.

Keywords
Cheongmicheon watershed
Climate change
Non-point source pollution
SWAT
Parameter calibration

본 연구는 미래기후변화에 따른 청미천 유역의 향후 수질 변화를 검토하고, 최적관리기법으로의 접근을 이용한 비점오염물질 저감 대책의 유효성을 살펴보는 것을 목적으로 수행되었다. 기후변화에 따른 미래 수문 및 수질변수의 변화를 살펴보기 위하여 Soil and Water Assessment Tool (SWAT) 모형을 이용하였으며, SWAT 모형의 매개변수는 SWAT-CUP을 이용하여 보정하였다. 구축된 Representative Concentration Pathway (RCP) 시나리오 중 RCP 4.5 및 8.5 두 개 시나리오를 이용하여 미래 기후를 고려하였다. 모의 결과로부터 기후 변화가 심화될수록 강우 및 비점오염물질의 유출이 증가하는 것으로 예측되었다. 또한 적절한 최적관리기법을 통해 비점오염물질의 총량뿐만 아니라 시간에 따른 변동성도 함께 효과적으로 저감될 수 있는 것으로 판단된다.

키워드
청미천 유역
기후 변화
비점 오염
SWAT
매개변수 보정
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Information
  • Publisher :KOREA WATER RESOURECES ASSOCIATION
  • Publisher(Ko) :한국수자원학회
  • Journal Title :Journal of Korea Water Resources Association
  • Journal Title(Ko) :한국수자원학회 논문집
  • Volume : 51
  • No :7
  • Pages :585-597
  • Received Date : 2018-03-13
  • Revised Date : 2018-04-03
  • Accepted Date : 2018-04-03
  • DOI :https://doi.org/10.3741/JKWRA.2018.51.7.585
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