摘要
城市公园绿地的空间分布反映了公园绿地应急避难空间供给与居民应急避难需求的平衡关系,应急避难可达性反映了应急避难场所避难能力大小。结合防灾公园规划建设标准和空间可达性理论,采用2SFCA算法和GIS技术,研究昆明市城区公园的避难可达性。结果表明:昆明市城区公园绿地应急避难覆盖率较低,最低为1.44%,应急避难可达性整体较差;可达距离d0在2 000～2 500 m时,避难可达性呈现中间低周边高的布局;当d0为2 000 m时,可达度最大,昆明市城区公园绿地的空间分布不合理;昆明市城区公园绿地整体应急避难能力较低,不能满足居民的应急避难需求。
The spatial distribution of urban parks can reflect the balance between the emergency shelter for urban parks supply and the demand of residents, and the accessibility of the emergency shelter reflects the capacities of the emergency shelter. Using 2SFCA algorithm and GIS technology with planning and construction standards of disaster- proof green space and space accessibility theory, we studied the accessibility of the refuge of urban parks in Kunming. The results show that： The refuge coverage rate of urban parks in Kunming is low, and the lowest reaches 1.44%, so the accessibility of the emergency shelter for urban parks e is bad on the whole; when do is at range of 2, 000 m to 2, 500 m, emergency accessibility present the layout of low in the center while high in the periphery; When do is 2, 000 m, reaches the maximum degree, so the urban parks distribution in Kun- ruing is not reasonable; The refuge of urban parks＇ capacities in Kunming is lower overall, and couldst satisfy residents＇ demand of emergency shelter.
出处
《云南地理环境研究》
2013年第1期106-110,共5页
Yunnan Geographic Environment Research
关键词
昆明城区
城市公园
应急避难场所
可达性
Kunming
urban area urban parks
emergency shelter
accessibility
