应急避难场所分布与人口及土地利用类型空间关联研究

Study on the Spatial Correlation between the Distribution of Emergency Shelters and Population and Land Use Types

以南通市人口数据和道路路网结构为基础,选取58个固定应急避难场所为研究对象,综合运用网络分析和双变量空间自相关方法研究应急避难场所分布与人口分布及土地利用类型的空间关联性。研究表明:南通市固定应急避难场所分布与人口分布及土地利用类型呈现较强的空间相关性,该市的固定应急避难场所分布呈现空间相似值之间的空间聚集现象。同时,分析结果图显示在“高高”聚集类型和“低低”聚集类型象限内有较多的应急避难场所,表明人口分布及土地利用类型对应急避难场所的空间分布特征起到一定作用。希望本文研究结果能为优化城市应急避难场所布局提供参考。

Based on the population data and road network structure in Nantong city,58 resident emergency congregate shelters were selected as research objects.The network analysis and bivariate spatial autocorrelation were used to study the spatial correlation between the distribution of emergency shelters and population distribution and land use types.The research shows that the distribution of emergency congregate shelters in Nantong city has a strong spatial correlation with population distribution and land use types.It shows that the distribution of emergency shelters in the city presents spatial aggregation between spatial similarities.At the same time,the analysis results show that there are more emergency shelters in the"high-and-high"aggregation type and the"low-and-low"aggregation type quadrants,indicating that population distribution and land use types play a certain role in the spatial distribution characteristics of emergency shelters.The results provide reference for optimizing the layout of urban emergency congregate shelters.