基于GIS的公共图书馆可达性分析--以南京市为例

Accessibility Analysis of Public Library Based on GIS:Taking Nanjing City as an Example

基于可达性相关理论,以GIS空间分析为基础,运用高斯两步移动搜索法和改进潜能模型对南京市公共图书馆可达性进行分析;综合比较了两种方法下各街道(镇)的公共图书馆可达性,并对其空间分布进行了简要分析。结果表明,南京市各街道(镇)的公共图书馆可达性水平差异性显著,高水平可达性区域主要分布在道路网络发达和公共图书馆服务能力较强的中心城区;而六合区北部、高淳区东部以及溧水区东南部等郊区因地处偏远,可达性水平较差,无法便捷的享受到公共图书馆资源;可达性水平呈现以中心城区为中心向四周逐步递减的圈层空间分布格局。对比分析高斯两步移动搜索法和改进潜能模型发现,高斯两步移动搜索法可以较好地反映各街道(镇)的公共图书馆可达性水平,更符合实际情况。

Based on the theory of accessibility, the Gaussian two-step mobile search method and the improved potential model are used to analyze the accessibility of Nanjing public library based on GIS spatial analysis. The public library accessibility of each street(town) under the two methods is compared comprehensively, and its spatial distribution is briefly analyzed. The results show that the accessibility levels of public libraries in various streets(towns) in Nanjing are significantly different. The high-level accessibility areas are mainly distributed in the central urban areas where the road network is developed and the public library service capacity is strong.Because the northern part of Liuhe District, the eastern part of Gaochun District and the southeastern part of Lishui District are remote and the accessibility level is poor, it is not convenient to enjoy the public library resources. The level of accessibility presents a spatial distribution pattern of the circle that gradually decreases in the central urban area. The Gaussian two-step mobile search method and the improved potential model are compared and analyzed. The Gauss two-step mobile search method can better reflect the accessibility level of public libraries in each street(town), which is more in line with the actual situation.