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Chinese Agricultural Science Bulletin ›› 2026, Vol. 42 ›› Issue (14): 128-135.doi: 10.11924/j.issn.1000-6850.casb2025-0972

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Temporal Variation Characteristics of Agrometeorological Disasters in Hebei and Their Response to Extreme Climate Indices

CHANG Shudong(), SHI Meiliang, MA Mingjun   

  1. Raoyang National Climate Observatory, Hengshui, Hebei 053900
  • Received:2025-12-09 Revised:2026-04-30 Online:2026-07-25 Published:2026-07-24

Abstract:

To quantify the multi-year variation patterns of agrometeorological disasters in Hebei and their relationship with extreme climate indices, based on meteorological observation data from 1981 to 2023 in Hebei and agrometeorological disaster data from Hebei Provincial Bureau of Statistics, this paper adopted methods such as simple linear regression and correlation analysis to study the temporal variation characteristics of several common agrometeorological disasters and their responses to extreme climate indices. The results showed that: (1) during 1981-2023, drought accounted for the highest proportion with a trend of increasing first and then decreasing; wind-hail disasters and flood disasters ranked second, showing a slow decline; freezing disasters accounted for the lowest proportion and exhibited a slow increase; (2) the extreme maximum temperature increased, the extreme minimum temperature decreased; the number of frost days decreased significantly; annual precipitation and the number of heavy rain days increased slightly, the daily maximum precipitation decreased slightly; and the number of strong wind days decreased significantly before rising slightly; (3) drought was significantly negatively correlated with annual precipitation and the number of heavy rain days, and significantly positively correlated with the number of strong wind days; flood was significantly negatively correlated with daily mean temperature difference, and significantly positively correlated with annual precipitation and precipitation intensity; wind-hail disaster was significantly negatively correlated with daily mean temperature difference; freezing disaster was significantly negatively correlated with daily mean temperature difference, the number of frost days and the number of strong wind days. In short, several common agricultural meteorological disasters in Hebei are mainly affected by annual precipitation, precipitation intensity, heavy rain days, strong wind days, daily mean temperature difference, and frost days.

Key words: agrometeorological disasters, temporal variation, characteristics, extreme climate indices, response

CLC Number: