基于多源数据的公园绿地可达性分析与服务盲区识别——以昆明中心城区公园绿地为例

Accessibility Analysis of Park Green Space and Identifi cation of Service Blind Area Based on Multi-source Data—Taking Kunming's Central Urban Park Green Space as an Example

公园绿地建设情况体现了城市整体环境水平,反映出居民生活环境质量。指出仅用城市公园绿地的人均指标来评价城市绿地环境实效其实并不准确,因为某些中心城区公园绿地存在明显的分布不平衡现象,且由交通设施不完善亦导致了公园绿地出现了"服务盲区"。文章选择并提取多源网络数据,运用ArcGIS分析工具从宏观、中观两个层面对昆明主城范围内的主要公园绿地进行总体布局及可达性分析,以栅格叠加工具对城市公园绿地"服务盲区"进行识别,提出优化公园绿地布局和可达性,消除公园绿地"服务盲区"的适宜性建议。

The construction of green park space re ects the overall environmental level of the city and re ects the quality of residents'living environment.It points out that it is not accurate to use the per capita indicators of urban park green space to evaluate the urban green space environment's actual effect.Some central urban park green spaces have an obvious imbalance in distribution,and the imperfect transportation facilities have also led to"service blind spots"in the green spaces.The article selects and extracts multi-source network data,uses ArcGIS analysis tools to analyze the overall layout and accessibility of the central park green areas within the principal city of Kunming from the macro and meso level,and uses grid overlay tools to analyze urban park green areas"service blind zone"to identify,put forward suggestions to optimize park green space layout and accessibility,and eliminate the suitability of park green land"service blind zone".