Journal of Korea Water Resources Association (한국수자원학회논문집)

Korea Water Resources Association (한국수자원학회)
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Analysis and evaluation of hydrological components in a water curtain cultivation site

수막재배지역의 수문성분 해석 및 평가

  • Chung, Il-Moon (Hydrological Sciences and Engineering Dept., Korea Institute of Civil Engineering and Building Technology) ;
  • Chang, Sun Woo (Hydrological Sciences and Engineering Dept., Korea Institute of Civil Engineering and Building Technology)
  • 정일문 (한국건설기술연구원 수자원하천연구소) ;
  • 장선우 (한국건설기술연구원 수자원하천연구소)
  • Received : 2016.07.15
  • Accepted : 2016.07.30
  • Published : 2016.09.30
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Abstract

This study conducts the hydrological component analysis from 2010 to 2015 at the water curtain cultivation area in Cheongwon-gu, Cheongju-si and investigates the monthly based groundwater recharge variation. It is found that the rates of evaportranspiration, surface runoff and groundwater recharge were varied according to the total annual precipitation and their correlations were also changed annually. Annual recharge rates for annual precipitation ranged from 8.3% to 19%, and their coefficient of determination ranged from 0.39 to 0.94. Especially in 2015, when the severe drought came upon this area, the lack of groundwater recharge made groundwater level decrease consistently. Thus, it is thought that the special method of estimating exploitable groundwater in water curtain cultivation site is to be introduced.

본 연구에서는 청주시 청원군에 위치한 수막재배 소유역을 대상으로 2010년부터 2015년까지의 수문성분 분석을 수행하고 강수에 따른 자연 지하수 함양량의 월별 변화를 살펴보았다. 그 결과 강수량의 크기에 따라 증발산량, 지표유출량, 지하수 함양량의 비율이 다르게 나타나며 강수에 대한 각 요소의 상관성이 해마다 다르게 나타남을 알 수 있었다. 강수량 대비 연 함양률은 최소 8.3~19%까지 나타났으며 강수에 대한 함양량의 결정계수도 0.39~0.94로 변화폭이 큰 것으로 나타났다. 특히 2015년과 같은 갈수년의 경우 저조한 강수량으로 인해 자연 지하수 함양이 제대로 이뤄지지 않아 지하수위는 지속적으로 하강하는 것으로 나타났다. 따라서 수막재배지역을 대상으로 하는 특별한 지하수 개발가능량 산정방법이 도입되어야 할 것으로 판단된다.

Keywords

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