Relationship between Rice Yield in South Korea and El Niño Events that Occurred During the Rice Growing Season

Hyeon-Seok Lee; Seo-Yeong Yang; Jae-kyeong Baek; Yeong-Seo Song; Ju-Hee Kim; So-Hye Cho; Ji-Young Shon; Jae-Ki Chnag; Junhwan Kim

doi:10.7740/kjcs.2024.69.2.071

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2024 Vol.69, Issue 2 Next Page

Original Research Article

Relationship between Rice Yield in South Korea and El Niño Events that Occurred During the Rice Growing Season 벼 작기중 발생한 El Niño와 국내 벼 작황과의 관계

1 June 2024. pp. 71-77

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Abstract

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.

Keywords

El Niño

Oceanic Niño Index

precipitation

rice yield

sunshine hours

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Information

Publisher :The Korean Society of Crop Science
Publisher(Ko) :한국작물학회
Journal Title :The Korean Journal of Crop Science
Journal Title(Ko) :한국작물학회지
Volume : 69
No :2
Pages :71-77
Received Date : 2024-02-19
Revised Date : 2024-04-17
Accepted Date : 2024-04-18
DOI :https://doi.org/10.7740/kjcs.2024.69.2.071

The Korean Journal of Crop Science ISSN:0252-9777(Print) 2287-8432(Online) 한국작물학회지

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