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Water 2016, 8(12), 554; doi:10.3390/w8120554

Assessing Sensitivity of Paddy Rice to Climate Change in South Korea

1
Institute of Green Bio Science and Technology, Seoul National University, Gangwon 25354, Korea
2
Department of Agricultural Engineering, Gyeongsang National University, Jinju 52828, Korea
3
Department of Rural and Biosystems Engineering, Chonnam National University, Gwangju 61186, Korea
4
Division of Agro-System Engineering & Institute of Agriculture and Life Science, Gyeongsang National University, Jinju 52828, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Benoit Demars
Received: 12 October 2016 / Revised: 17 November 2016 / Accepted: 24 November 2016 / Published: 28 November 2016
View Full-Text   |   Download PDF [5389 KB, uploaded 28 November 2016]   |  

Abstract

Paddy rice constitutes a staple crop in Korea. This study conducted sensitivity analysis to evaluate the vulnerability of paddy rice to future climate change, and compared temporal and regional characteristics to classify regions with unfavorable water balances. Rainfall Effectiveness Index for Paddy fields (REIP), the ratio of effective rainfall and consumptive use, was used as a sensitivity index. Weather data from 1971 to 2010 and future climate change scenarios Representative Concentration Pathways (RCP) 4.5 and 8.5 were used to evaluate the sensitivity. Results showed an overall increase in water requirements and consumptive use. The REIP values were small for every period, except the 2040s, 2060s, and 2080s under scenario RCP 4.5, and the 2040s and 2080s under scenario RCP 8.5. Both climate change scenarios showed high sensitivity in regions Jeollabuk-do, Jeollanam-do, and Gyeongnam-do. However, regions Gyeonggi-do, Gangwon-do, and Chungcheongbuk-do had low sensitivity compared to other regions. The REIPs were used to categorize sensitivity into four types: low consumption–water rich, low consumption–water poor, high consumption–water rich, and high consumption–water poor. The Gangwon-do region had the highest number of regions that changed from the low consumption–water rich category to the high consumption-water poor category, making it a priority for measures to improve its adaptive capacity for climate change. View Full-Text
Keywords: climate change; irrigation; paddy; sensitivity; water vulnerability climate change; irrigation; paddy; sensitivity; water vulnerability
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Kim, S.; Bae, S.; Kim, S.; Yoo, S.-H.; Jang, M.-W. Assessing Sensitivity of Paddy Rice to Climate Change in South Korea. Water 2016, 8, 554.

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