• Estimation of Regional Future Agricultural Available Groundwater Supply in Jeju Island Using Water Balance Method
  • Song, Sung-Ho;Lee, Gyu-Sang;Myoung, Woo-Ho;An, Jung-Gi;Baek, Jin-Hee;Jung, Cha-Youn;
  • Rural Research Institute, Korea Rural Community Corporation;Rural Research Institute, Korea Rural Community Corporation;Rural Research Institute, Korea Rural Community Corporation;Jungmyung Engineering;Jeju Special Self-government Province Branch, Korea Rural Community Corporation;Jeju Special Self-government Province Branch, Korea Rural Community Corporation;
  • 물수지 분석법을 이용한 제주도 권역별 미래 농업용 지하수 공급 가능량 추정
  • 송성호;이규상;명우호;안중기;백진희;정차연;
  • 한국농어촌공사 농어촌연구원;한국농어촌공사 농어촌연구원;한국농어촌공사 농어촌연구원;중명기술사 사무소;한국농어촌공사 제주지역본부;한국농어촌공사 제주지역본부;
Abstract
To evaluate the available groundwater supply to the agricultural water demand in the future with the climate change scenarios for 40 sub-regions in Jeju Island, groundwater recharge and the available groundwater supply were estimated using water balance analysis method. Groundwater recharge was calculated by subtracting the actual evapotranspiration and direct runoff from the total amount of water resources and available groundwater supply was set at 43.6% from the ratio of the sustainable groundwater capacity to the groundwater recharge. According to the RCP 4.5 scenario, the available groundwater supply to the agricultural water demand is estimated to be insufficient in 2020 and 2025, especially in the western and eastern regions of the island. However, such a water shortage problem is alleviated in 2030. When applying the RCP 8.5 scenario, available groundwater supply can't meet the water demand over the entire decade.

Keywords: Available groundwater supply;Agriculture water demand;Groundwater recharge;Climate change scenario;Jeju island;

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