Characterization of Spatial Distribution of Subdistrict High Temperature Heat Wave Vulnerability and Analysis of lnfluencing Factors Based on VSD Model:Take Hefei City as an Example
Along with the increasingly serious global warming problem,extreme weather represented by high-temperature heat waves presents new features such as wide impact range,high frequency and long duration,which brings great challenges to the sustainable development of cities.Vulnerability study is an important way to explore the internal elements and mechanisms of the system,and the vulnerability study of urban high-temperature heat waves is of great significance to promote the sustainable development of urban areas.Taking the main urban area of Hefei City as an example,this study focuses on the fusion of multi-source data,takes the subdistricts as the research unit,and uses the VSD(Vulnerability-Scoping-Diagram)model to construct the vulnerability evaluation index system of high-temperature heat wave in Hefei City and systematically quantifies the vulnerability level of the subdistricts in Hefei City.The results show that:the vulnerability level of high-temperature heat waves in Hefei City is generally high;the high-temperature heat wave vulnerability in Hefei City presents significant spatial heterogeneity,and the overall numerical distribution characteristics of high inside and low outside and high east and low west.NDVI was the main driver of high-temperature heat wave vulnerability in Hefei.
VSD modelheat wave eventsvulnerabilityGeo-Detectorpublic health
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