극한강우 발생시 농경지 홍수 위험도 평가

초록

Climate change has increased the frequency and intensity of extreme rainfall, resulting in recurrent agricultural flooding. This study evaluates flood-prone agricultural zones in South Chungcheong Province by applying rainfall return period analysis and probable maximum precipitation (PMP) to assess the impact of inadequate drainage capacity. The results indicate that northern areas such as Asan and Cheonan, and southern and southwestern regions including Boryeong, Seocheon, Buyeo, and Hongseong, are highly vulnerable to extreme rainfall. The PMP analysis further identifies Boryeong, Seocheon, Buyeo, and Cheongyang as critical hotspots of flood risk associated with extreme rainfall in South Chungcheong Province. Approximately 23% of the agricultural land falls within the very high and 16% within the high flood-risk category, with paddy fields being the most vulnerable, followed by upland croplands and mixed vegetation. These findings provide practical insights for improving drainage infrastructure and developing adaptive strategies to ensure agricultural resilience under changing climate conditions.

키워드