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NTIS 바로가기Journal of Korea Water Resources Association = 한국수자원학회논문집, v.54 no.5, 2021년, pp.311 - 320
곽재원 (환경부 한강홍수통제소)
농업용수는 우리나라의 용수사용량 중에 61%를 차지하고 있으며, 효율적인 수자원관리를 달성하기 위한 핵심적인 관리목표 중 하나이다. 본 연구에서는 댐과 저수지 등을 관리하는 실무자가 수문상황에 따른 하천에서의 농업용수 임계사용량을 간편하게 추정하기 위한 방법론을 제안하고자 하였다. 이를 위하여, 4대강 권역의 주요 27개 하천유역을 대상으로 하여 유역의 유출량과 하천수 사용실적을 수집하였다. 하천에서의 농업용수 사용과 예년대비 유출율이 유의미한 상관관계가 있음을 나타내었으며, 분위회귀를 이용하여 농업용수 최대사용을 대표하는 임계곡선으로 제시하고 27개 하천유역에 적용하였다. 최종적으로 예년대비 2개월 유출율에 따른 농업용수 최대사용량대비 사용률로 표현되는 두 가지 임계곡선과 식을 제시하였다. 또한, 유역특성을 비교하여 삼림면적 대비 농지면적의 비를 기준으로 임계곡선 유형을 결정할 수 있도록 하였으나, 추가적인 자료 수집과 분석이 필요할 것으로 판단된다. 본 연구에서 제시한 방법은 하천 농업용수 임계사용량을 간편하게 추정하고 활용할 수 있으므로 수자원관리 실무에서 유용하게 활용될 수 있을 것으로 기대한다.
The agricultural water, which occupy about 61% of total water usage in the South Korea, is significantly objective to archieve effecitive water resources management. The objective of the study is to suggest a simple method in actual practice that could be used to estimate agricultural water usage in...
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