基于GIS的徐州主城区公园绿地可达性分析

Accessibility analysis of urban parks based on GIS: a case study on the main urban area of Xuzhou

长期以来,我国一直以城市公园绿地的总面积和人均面积作为衡量城市公园绿地建设合理性的指标,但这类统计数据没有明确表明城市公园绿地在城市中的空间分布情况。本研究以徐州市主城区作为研究区,将其内部的交通网络和城市公园绿地矢量化处理后为数据源,利用地理信息系统(GIS)的网络分析技术,在对城市公园绿地进行可达性分析的基础上,对其空间分布和对城市居民服务的有效性进行分析。结果表明:徐州市主城区城市公园绿地可达性整体上较好,但仍然存在问题:城市公园绿地可达性最优区域集中在中部地区,而其他区域的城市公园绿地可达性有待提高,尤其是西部和北部区域。

In recent decades,the total/per capita area of urban parks have been used as important indicators for the evaluation of urban parks structure in China. However,those statistics have not demonstrated the spatial distribution of urban parks in a city. In this study,we took the main urban area of Xuzhou City as the target area,vectorized its traffic network and urban parks,then analyzed the accessibility and distribution of urban parks,and their service effectiveness by using geographic information system（ GIS）. The results showed that the accessibility of urban parks in Xuzhou was generally good,but there still existed problems： the accessibility of urban parks in the central urban area was the best,while that in other areas（ especially in western and northern areas） needed to be improved.