한국농공학회논문집 (Journal of The Korean Society of Agricultural Engineers)

  • 제57권4호
  • /
  • Pages.73-84
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  • 2015
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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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기후변화에 따른 둑높임 저수지의 용수공급능력 평가

Evaluating Water Supply Capacity of Embankment Raised Reservoir on Climate Change

  • Lee, Jaenam (Institute of Agricultural Science, Chungnam National University) ;
  • Noh, Jaekyoung (Department of Agricultural and Rural Engineering, Chungnam National University)
  • 투고 : 2015.04.03
  • 심사 : 2015.07.13
  • 발행 : 2015.07.30
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초록

An embankment raising project on 113 agricultural reservoirs in Korea was implemented in 2009 to increase water supply capacity for agricultural water and instream uses. This study evaluated the future water supply capacity of the Imgo reservoir at which the agricultural reservoir embankment raising project was completed, considering climate change scenarios. The height of the embankment of the reservoir was increased by 4.5 m, thereby increasing its total storage from 1,657.0 thousand to 3,179.5 thousand cubic meters. To simulate the reservoir water storage with respect to climate changes, two climate change scenarios, namely, RCP 4.5 and RCP 8.5 (in which greenhouse gas reduction policy was executed and not executed, respectively) were applied with bias correction for reflecting the climate characteristics of the target basin. The analysis result of the agricultural water supply capacity in the future, after the agricultural reservoir embankment raising project is implemented, revealed that the water supply reliability and the agricultural water supply increased, regardless of the climate change scenarios. By simulating the reservoir water storage considering the instream flow post completion of the embankment raising project, it was found that water shortage in the reservoir in the future is not likely to occur when it is supplied with an appropriate instream flow. The range of instream flow tends to decrease over time under RCP 8.5, in which the greenhouse gas reduction policy was not executed, and the restoration of reservoir storage was lower in this scenario than in RCP 4.5, in which greenhouse gas reduction policy was executed.

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