Spatiotemporal Characterization and Hazard Assessment of Compound Extreme Events of Maize in Songliao Plain based on CEMI

Ziyuan Zhou, Ying Guo, Dan Chen, Kaiwei Li, Xiao Wei, Zhi Feng, Jiquan Zhang (), Chunli Zhao, Zhijun Tong and Xingpeng Liu
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Ziyuan Zhou: Northeast Normal University, School of Environment
Ying Guo: Northeast Normal University, School of Environment
Dan Chen: Northeast Normal University, School of Environment
Kaiwei Li: Anhui Science and Technology University, College of Agricultural
Xiao Wei: Northeast Normal University, School of Environment
Zhi Feng: Northeast Normal University, School of Environment
Jiquan Zhang: Northeast Normal University, School of Environment
Chunli Zhao: Jilin Agricultural University, College of Forestry and Grassland
Zhijun Tong: Northeast Normal University, School of Environment
Xingpeng Liu: Northeast Normal University, School of Environment

A chapter in Proceedings of the 11th Annual Meeting of Risk Analysis Council of China Association for Disaster Prevention (RAC 2024), 2025, pp 108-114 from Springer

Abstract: Abstract Since global climate anomalies have led to a significant increase in extreme weather and climate events, including their intensity and spatial extent, it is particularly important to study extreme events to ensure agricultural production. First, in this study, the standardized precipitation requirement index (SPRI) and standardized temperature index (STI) were used to characterize agricultural drought and waterlogging and heat, respectively, and the compound drought and heat magnitude index (CDHMI) and compound waterlogging and heat magnitude index (CWHMI) were constructed by modeling the marginal distribution. Next, the occurrence patterns of identified compound drought and heat events (CDHEs) and compound waterlogging and heat events (CWHEs) were statistically analyzed. Finally, a hazard assessment model was constructed by fitting probability density curves. The results showed that CWHEs in the maize growing season in the Songliao Plain mainly occurred in the northern part of the study area, and CDHEs mainly occurred in the central and southern parts of the study area. The number of both CDHEs and CWHEs increased in most parts of the Songliao Plain. Higher hazard classes for CDHEs occur mainly in the middle of the maize reproductive period, while higher hazard classes for CWHEs occur mainly in the late maize reproductive period.

Keywords: Drought; Waterlogging; Heat; Compound Extreme Events; Hazard (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:spr:advbcp:978-94-6463-946-9_14

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DOI: 10.2991/978-94-6463-946-9_14

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