Assessing Drought, Flood, and High Temperature Disasters during Sugarcane Growth Stages in Southern China

Pei Yao, Long Qian (), Zhaolin Wang, Huayue Meng and Xueliang Ju
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Pei Yao: School of Water Resources and Hydropower Engineering, Wuhan University, Wuhan 430072, China
Long Qian: School of Civil Engineering, Sun Yat-sen University, Guangzhou 510275, China
Zhaolin Wang: School of Water Resources and Hydropower Engineering, Wuhan University, Wuhan 430072, China
Huayue Meng: School of Water Resources and Hydropower Engineering, Wuhan University, Wuhan 430072, China
Xueliang Ju: State Grid Shaanxi Electric Power Research Institute, Xi’an 710100, China

Agriculture, 2022, vol. 12, issue 12, 1-18

Abstract: As a globally important sugarcane-producing region, Southern China (SC) is severely affected by various agrometeorological disasters. This study aimed to comprehensively assess multiple sugarcane agrometeorological disasters with regards to sugarcane yield in SC. The standardized precipitation evapotranspiration index and the heat degree-days were employed to characterize drought, flood, and high temperature (HT) during sugarcane growth stages in three provinces in SC in the period 1970–2020. Moreover, the relationships between sugarcane climatic yield and disaster intensities were investigated. The results indicated that the most recent decade witnessed the most intensive sugarcane agrometeorological disasters; sugarcane drought and HT intensities significantly ( p < 0.05) increased in one and two provinces, respectively. Central and western SC was most drought-prone, while eastern SC was most flood-prone; sugarcane HT was concentrated in southwestern SC. The mature stage exhibited the greatest monthly intensities of drought and flood; the most HT-prone growth stage varied with provinces. The relationships between drought/flood intensity and sugarcane climatic yield were significant in seven districts; the yield-reducing effect of sugarcane flood was more obvious than that of drought. In conclusion, this study provides references for agrometeorological disaster risk reduction for sugarcane in SC.

Keywords: sugarcane; heat stress; SPEI; waterlogging; climate change; growth stage; climatic yield (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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