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Chinese Agricultural Science Bulletin ›› 2019, Vol. 35 ›› Issue (19): 112-119.doi: 10.11924/j.issn.1000-6850.casb19010012

Special Issue: 农业气象

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Temporal and Spatial Distribution and Evolution Characteristics of Major Meteorological Disasters in Jiangsu Province

  

  • Received:2019-01-03 Revised:2019-02-20 Accepted:2019-02-25 Online:2019-07-08 Published:2019-07-08

Abstract: Abstract: According to the observation data of meteorological stations and stations, relevant disaster data and national economic data of Jiangsu province in the past 35 years from 1983 to 2017, In this paper, five meteorological disasters, including severe convection, rainstorm, flood, drought, typhoon and snowstorm, with the largest losses, are selected as the main research objects, analyzed the spatial and temporal variations characteristics of major meteorological disaster events in Jiangsu province. According to the research, rainstorm and flood occurred mainly in summer (June to August), mainly in July. The high-value area is mainly located in the northern part of Huaibei, lixia river area and the western part of southern Jiangsu along the river. Severe convection disasters mainly occur in spring and summer (March to August), The distribution area is concentrated in the coastal areas of Jiangsu province and lixia river region, with Yancheng and Nantong region being the most serious. The drought disaster lasts for a long time, occurs in all seasons of the year, and was a wide range of distribution. Generally showing the trend of light weight in the southeast and heavy weight in the northwest. The great value area is located along the Huaihe Huaibei east area and Ningzhen Yang hilly area. Typhoon disaster mainly occurs in summer (from June to August), and its impact range is typically larger in coastal areas than in inland areas. Snow disasters mainly occur in winter (December to February of the next year), with the largest number in January, the occurrence of high frequency area is irregular sporadic distribution. In this study, direct economic loss and death population were used to characterize the evolution of meteorological disasters. The results showed that the cumulative death population showed an overall downward trend. From the 1980s to now, the total number of deaths due to meteorological disasters decreased by 83%.Direct economic losses showed a significant upward trend, with the economic losses after 1998 about 1.38 times as much as before. In general, the loss rate of meteorological disasters fluctuates and declines, and the regional loss rate since 2010 is about 0.1%.