Spatial‐temporal patterns of high‐temperature and drought during the maize growing season under current and future climate changes in northeast China

中国 气候变化 生长季节 全球变暖 环境科学 极端天气 气候学 地理 空间生态学 自然地理学 农学 生态学 生物 地质学 考古
作者
En Li,Jin Zhao,Wenmeng Zhang,Xiaoguang Yang
出处
期刊:Journal of the Science of Food and Agriculture [Wiley]
卷期号:103 (12): 5709-5716 被引量:20
标识
DOI:10.1002/jsfa.12650
摘要

Abstract Background Under the background of global warming, the intensity and frequency of extreme meteorological events in the maize growing season in northeast China are increasing. In order to clarify the occurrence characteristics of extreme meteorological events in northeast China, this study focused on three extreme agrometeorological events, i.e., high temperatures, drought, and the compound events of high‐temperature and drought during the maize growing season (May–September), impacting maize production. Results Based on historical (1981–2017) and future (2021–2060) climate data, we analyzed the spatial‐temporal patterns of these three events with different intensities in northeast China. The results indicated that slight high‐temperatures and moderate and severe droughts occurred more frequently in the study area during the historical period. The frequency of the different grades of the compound events of high‐temperature and drought will exhibit an increasing trend in the future, as will the frequency of the compound events of high‐temperature and drought. This is particularly evident in the northwest of the study area. Conclusion The compound events of high‐temperature and drought mainly occurred in late July and early August, encompassing the flowering stage of maize varieties. It is important to identify the area and time of major extreme weather events to implement the necessary preventive measures. © 2023 Society of Chemical Industry.
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