벼 작기중 발생한 El Niño와 국내 벼 작황과의 관계

• Published in: Korean journal of crop science Vol. 69; no. 2; pp. 71 - 77
• Main Authors: 이현석, Hyeon-seok Lee, 양서영, Seo-yeong Yang, 백재경, Jae-kyeong Baek, 송영서, Yeong-seo Song, 김주희, Ju-hee Kim, 조소혜, So-hye Cho, 손지영, Ji-young Shon, 장재기, Jae-ki Chnag, 김준환, Junhwan Kim
• Format: Journal Article
• Language: Korean
• Published: 한국작물학회 01.06.2024
• Subjects: El Niño; Oceanic Niño Index; precipitation; rice yield; sunshine hours; 농학; precipitation; rice yield; El Nino; Oceanic Nino Index; sunshine hours
• ISSN: 0252-9777; 2287-8432
• DOI: 10.7740/kjcs.2024.69.2.071

After the strongest El Niño since 2015 occurred in 2023, there has been a growing interest in understanding its impacts on rice yield in South Korea. We investigated the impact of El Niño during the rice-growing season on rice yield by analyzing the correlation between detrended rice yield data and ONI (Oceanic Niño Index) values exceeding 0.5. The results show a positive correlation between ONI intensities and detrended rice yields. Furthermore, we found that variations in sunshine duration, precipitation, and typhoon activity affect detrended yield values positively and negatively. This pattern was similar to the classification of El Niño into Cold Tongue El Niño and non-Cold Tongue El Niño, which showed positive and negative detrended rice yield values, respectively. This observation suggests that predicting yield based on ONI intensity during Cold Tongue El Niño years may be feasible to some extent.