基于GIS的应急避难场所空间布局及可达性研究

【摘要】 应急避难场所服务是城市公共安全的重要组成部分，直接影响居民的生命财产安全。结合可达性相关理论，基于高空间分辨率的人口格网数据，采用核密度分析、网络分析法和高斯两步移动搜索法，探究大连市主城区应急避难场所的空间分布特征。结果表明，大连市主城区应急避难场所总体分布不均衡，数量和规模都不足以满足当前人群的紧急避难需要；各区避难资源空间差异显著，东南部地区资源丰富，中部及西部区域避难空间不足，尤其是甘井子区西部，今后对应急避难场所布局进行调整和优化时可着重考虑。更多还原

【Abstract】 Emergency shelter service is an important part of urban public safety, which directly affects the life and property safety of residents. According to the accessibility theory, based on the high spatial resolution population grid data, the spatial distribution characteristics of emergency shelters in the main urban area of Dalian are explored by using kernel density analysis,network analysis and Gaussian two-step mobile search method. The results show that, The overall distribution of emergency shelters in the main urban area of Dalian is uneven, and the number and scale are not enough to meet the emergency refuge needs of the current population. The spatial difference of refuge resources in different regions is significant, the southeast region is rich in resources, and the central and western regions are insufficient, especially in the west of Ganjingzi District, which can be taken into account when adjusting and optimizing the layout of emergency shelters in the future.更多还原