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2024 Vol.66, Issue 1 Preview Page
Evaluation of Water Supply Stability for Upland Crop in Reservoir Irrigation Districts Using Resilience Indexes

레질리언스 지표를 이용한 저수지 수혜구역의 전작농지 용수공급 안정성 평가

Jinseok Parka
,
Seongju Jangb
,
Hyeokjin Leec
,
Hyungjin Shind
,
Soo Chunge†
,
Inhong Songf††
박 진석a
,
장 성주b
,
이 혁진c
,
신 형진d
,
정 수e†
,
송 인홍f††
aPh.D. Student, Department of Rural Systems Engineering, Global Smart Farm Convergence Major, Seoul National University
bPh.D. Student, Department of Rural Systems Engineering, Global Smart Farm Convergence Major, Seoul National University
cMS Student, Department of Rural Systems Engineering, Global Smart Farm Convergence Major, Seoul National University
dAssociate Researcher, Rural Research Institute, Korea Rural Community Corporation
eAssistant Professor, Department of Biosystems Engineering, Integrated Major in Global Smart Farm, and Research Institute of Agriculture and Life Sciences, Seoul National University
fAssociate Professor, Department of Rural Systems Engineering, Global Smart Farm Convergence Major, Research Institute of Agriculture and Life Sciences, Seoul National University
a서울대학교 글로벌스마트팜융합전공 농촌시스템공학과 박사과정생
b서울대학교 글로벌스마트팜융합전공 농촌시스템공학과 박사과정생
c서울대학교 글로벌스마트팜융합전공 농촌시스템공학과 MS학생
d부연구원, 농촌연구원, 한국농어촌공사
e글로벌스마트팜 통합전공 바이오시스템공학부 조교수 겸 서울대학교 농업생명과학연구소 연구위원
f서울대학교 농업생명과학연구소 글로벌스마트팜 융합전공 농촌시스템공학부 부교수
† Corresponding author Tel.: +82-2-880-4606, Fax: +82-2-873-2049 E-mail: soochung@snu.ac.kr
†† Corresponding author Tel.: +82-2-880-4581, Fax: +82-2-873-2087 E-mail: inhongs@snu.ac.kr
2024. pp. 25-37
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Abstract

As the agricultural land use shifts from paddy to upland, ensuring reservoir water supply stability for upland crop irrigation becomes essential. The objectives of this study were to estimate the irrigation water requirements considering the upland irrigation scenario and to evaluate the reliability of the water supply from the agricultural reservoir using resilience indexes. Two study sites, Sinheung and Hwajeong, were selected, and soybean and red peppers, the most water-intensive crops, were selected as study crops, respectively. For the irrigation scenario, two irrigation methods of traditional scheduling (which irrigates all sites at once) and rotational scheduling (which distributes irrigation by districts), along with the upland conversion rate, were considered. The net irrigation requirement was estimated through a water balance analysis. The stability of the reservoir was evaluated using resilience indexes based on the simulated 10-years reservoir water levels and drought criterion. Overall, the water supply of the reservoir was evaluated as stable during the simulated 10 years, except for the one year. Compared to the two irrigation methods, rotational scheduling resulted in lower irrigation water usage in both sites, with reductions of 1.6%, and 0.3%, respectively. As the upland conversion rate increases, the water deficit could be intensified in Hwajeong with a conversion rate exceeding 50%, showing the number of deficit(ND) over the one and a rapid increase in the deficit ratio(DR). It was confirmed that the reservoir operation criteria can be enhanced by incorporating resilience indicators along with crop growth information, thus, this will be a further study.

Keywords
Resilience
reservoir stability
upland crop
irrigation
evapotranspiration
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Information
  • Publisher :The Korean Society of Agricultural Engineers
  • Publisher(Ko) :한국농공학회
  • Journal Title :Journal of Korean Society of Agricultural Engineers
  • Journal Title(Ko) :한국농공학회논문집
  • Volume : 66
  • No :1
  • Pages :25-37
  • Received Date : 2023-06-30
  • Revised Date : 2023-11-01
  • Accepted Date : 2023-11-20
  • DOI :https://doi.org/10.5389/KSAE.2024.66.1.025
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