城市防灾避险功能的空间差异性评价——以深圳市经济特区为例

SPATIAL HETEROGENEITY EVALUATION OF URBAN DISASTER PREVENTION AND REDUCTION FUNCTIONS: WITH SHENZHEN SPECIAL ECONOMIC ZONE AS AN EXAMPLE

防灾避险功能评价是城市灾害管理及城市规划的重要内容之一,在系统梳理相关研究进展的基础上,采用了一种基于GIS空间直观表征的城市防灾避险功能评价方法,并针对深圳市经济特区内4类基础设施的防灾避险功能进行了综合评价。结果表明:研究区防灾避险功能由北向南逐渐降低,防灾避险功能辐射总面积为38322.09hm2,占研究区总面积的98%;但仍有2%的区域处于服务盲区,主要分布在南山区和福田区,少量分布在盐田区。

The evaluation of urban disaster prevention and reduction functions is an important part of urban disaster management and urban planning. Based on a systematic summary of the relevant research progress, this paper applies the method of evaluating urban disaster prevention and reduction functions based on GIS spatial visual expression. And then it analyzes the urban disaster prevention and reduction functions of four kinds of infrastructures in Shenzhen Special Economic Zone. The results show that related functions reduce gradually from north to south in the research area, and the effective service area is 38322.09 hm^2, which accounts for 98% of the total area. There is still a blind area of 2% in the total area, mainly distributed in Nanshan District and Futian District and the rest in Yantian District.