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2025 Vol.58, Issue 8

Research Article

A quantitative assessment framework for regional drought response using the agricultural water deficit response index

농업적 물부족 대응지수를 활용한 시군단위 가뭄 대응역량 평가

Young-Sik Muna
,
Won-Ho Namb*
,
Sangdan Kimc
문 영식a
,
남 원호b*
,
김 상단c
aPh.D. Student, Department of Integrated Systems Engineering, Hankyong National University, Anseong, Korea
bProfessor, School of Social Safety and Systems Engineering, Institute of Agricultural Environmental Science, National Agricultural Water Research Center, Hankyong National University, Anseong, Korea
cProfessor, Division of Earth Environmental System Science (Major in Environmental Engineering), Pukyong National University, Busan, Korea
a한경국립대학교 융합시스템공학과 박사과정
b한경국립대학교 사회안전시스템공학부 교수
c국립부경대학교 지구환경시스템과학부(환경공학전공) 교수
*Corresponding Author
31 August 2025. pp. 611-623
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Abstract

Agricultural drought poses a growing threat to crop production and regional water systems. Despite its significance, regional disparities in drought impacts, damages, and adaptive capacities remain inadequately understood. This study develops a quantitative framework—the Agricultural Water Deficit Response Index (AWDRI)—based on five standardized indicators to evaluate regional drought response capacities. Utilizing data from 167 administrative regions in South Korea, the study employs Principal Component Analysis (PCA) and K-means clustering to identify structural differences and classify regional response typologies. PCA results indicate that two principal components—representing physical and administrative dimensions—account for 56.7% of the total variance. Clustering analysis reveals three distinct regional response types: Balanced, Physical-Dominant, and Exceptional. Regions classified as Balanced generally exhibit low AWDRI scores, whereas Physical-Dominant regions experience moderate levels of drought damage despite considerable physical response capacity. These findings highlight that drought severity alone does not fully explain regional outcomes. Rather, the structural composition of drought response mechanisms plays a critical role. The AWDRI framework enables a multidimensional assessment of agricultural drought vulnerability and adaptive capacity, offering a scalable and transferable model for informing future drought policy and regional resilience planning.

Keywords
Agricultural drought
Drought response capacity
Agricultural Water Deficit Response Index (AWDRI)
Principal Component Analysis (PCA)
Cluster analysis

농업가뭄의 발생은 작물 생육과 물관리 체계의 불균형을 초래하고 있지만, 가뭄 영향, 피해 및 대응역량에 대한 지역 간 차이는 충분히 규명되지 않았다. 본 연구에서는 5개의 표준화된 대응 지표를 기반으로 정량적 농업적 물부족 대응지수(Agricultural Water Deficit Response Index, AWDRI)를 개발하고자 한다. 167개 시군구를 대상으로 지역별 가뭄 대응 구조의 이질성을 분석하였으며, 주성분 분석(Principal Component Analysis, PCA)과 K-평균 군집분석(K-means clustering)을 적용하여 지역 유형을 분류하였다. PCA 결과, 두 개의 주성분이 전체 분산의 56.7%를 설명하였으며, 이는 가뭄 대응의 물리적 차원과 행정적 차원을 각각 반영하는 것으로 나타났다. 군집분석을 통해 균형형(Balanced), 물리 중심형(Physical-Dominant), 예외형(Exceptional)의 3가지 유형이 도출되었다. 균형형은 지역은 대체로 낮은 AWDRI 값을 보였으며, 물리 중심형 지역은 높은 물리적 대응 실적에도 불구하고 중간 수준의 피해를 경험하는 양상을 나타냈다. 대응 구조의 이질성은 가뭄 영향 평가에 중요한 변수로 작용하며, 농업적 물부족 피해와 적응역량에 대한 다차원적 평가의 필요성을 나타낸다. 본 연구의 결과는 가뭄으로 인한 피해 수준과 구조적 대응 특성을 통합함으로써 지역 가뭄의 상태를 포괄적으로 이해할 수 있으며, 향후 가뭄 관련 평가 및 정책 수립에 활용 가능할 것으로 판단된다.

키워드
농업가뭄
가뭄대응능력
농업적 물부족 대응지수
주성분 분석
군집분석
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Information
  • Publisher :KOREA WATER RESOURECES ASSOCIATION
  • Publisher(Ko) :한국수자원학회
  • Journal Title :Journal of Korea Water Resources Association
  • Journal Title(Ko) :한국수자원학회 논문집
  • Volume : 58
  • No :8
  • Pages :611-623
  • Received Date : 2025-04-14
  • Revised Date : 2025-06-02
  • Accepted Date : 2025-06-05
  • DOI :https://doi.org/10.3741/JKWRA.2025.58.8.611
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