Abstract
In the context of global warming and rising sea levels, as urbanization continues to increase, the risk situation of urban systems facing floods has become more severe. Therefore, we constructed a vulnerability assessment model for urban flood disasters in Jiangsu Province, focusing on using GIS technology to classify the land use of each city in Jiangsu Province for supervised learning. We also established a flood disaster vulnerability model to evaluate the Vulnerability of 13 cities in Jiangsu Province. Evaluation and analysis of the changes in land use vulnerability use flood disasters in Jiangsu Province from 2000 to 2020. The results show that from 2000 to 2020, the Vulnerability to flooding disasters is on the rise as a whole. Yancheng has the lowest average Vulnerability to flooding disasters due to the low population density and high greening rate in the built-up area. On the other hand, Nantong City has the most heightened average flood vulnerability due to excessive population density. The low greening rate in built-up areas has led to a worsening of flood vulnerability. Suggestions have been made to reduce the Vulnerability of urban floods in Jiangsu Province, such as vigorously developing the local economy, reasonably adjusting the rate of urbanization, and building drainage infrastructure.
Highlights
Flood disasters are one of the leading natural disasters and are greatly affected by climate change
This paper provides a basis for scientifically and rationally planning and sustaining the use of land resources in cities in Jiangsu Province by assessing the Vulnerability and studying the impact of changes in land use cover on the Vulnerability of cities in Jiangsu Province to flood disasters
2.2 Land use/cover classification based on GIS
Summary
Flood disasters are one of the leading natural disasters and are greatly affected by climate change. Extreme precipitation events are becoming more frequent, the impact of flooding disasters is becoming wider and wider, and the losses to agricultural production are increasing. Jiangsu Province is located in the middle and lower reaches of the Yangtze River, in the mid-latitude zone on the east coast of the Asian continent. It belongs to the East Asian monsoon climate zone and is in the transition zone between subtropical and warm temperate climates. During the summer in June and July, affected by the East Asian monsoon, the area south of the Huaihe River enters the Meiyu period. Research on disaster vulnerability assessment of cities in Jiangsu Province is essential
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