The Impact of Composite Dry Heat Events on Vegetation in Inner Mongolia

Cha Ersi, Ying Guo, Yi Bole, Sicheng Wei, Ziyuan Zhou and Jiquan Zhang ()
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Cha Ersi: Northeast Normal University, School of Environment
Ying Guo: Northeast Normal University, School of Environment
Yi Bole: Northeast Normal University, School of Environment
Sicheng Wei: Northeast Normal University, School of Environment
Ziyuan Zhou: Northeast Normal University, School of Environment
Jiquan Zhang: 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 225-231 from Springer

Abstract: Abstract In recent years, extreme climate events have occurred frequently, and extreme compound events often pose greater threats to ecosystems than single disasters. This study analyzed the impact of compound dry heat events in Inner Mongolia from 1982 to 2020 on vegetation, as well as the impact of drought events on vegetation phenology. This study constructed the Standardized Precipitation Evapotranspiration Index (SPEI) and Composite Dry Heat Index (CDHI), and explored the effects of dry heat events and drought events on vegetation and vegetation phenology in Inner Mongolia, as well as the contributions of teleconnection factors. The results indicate that: (1) Dry heat events have a significant negative impact on grasslands, especially more fragile desert grasslands and typical grasslands, and have a certain positive effect on forests. Grasslands respond more quickly to compound dry heat events. The impact of Pacific Decadal Oscillation (PDO) on the relationship between dry heat events and vegetation is most significant. The results of this study provide a foundation for improving disaster warning systems, developing targeted mitigation strategies, and protecting fragile ecosystems.

Keywords: Composite Event; NDVI; WTC; Inner Mongolia (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_29

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DOI: 10.2991/978-94-6463-946-9_29

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