基于骑行指数的南京中心城区公园广场服务水平研究

公园广场作为城市休闲空间的组成部分,其服务水平对市民游憩和城市休闲资源的合理配置具有重要意义。已有针对公园广场服务水平的评价方法多通过建立指标体系或结合空间可达性进行研究,而从骑行角度展开的研究较少。该文以南京市中心城区为研究区,利用微信宜出行数据,在空间可达性的基础上,从格网和街道尺度分别构建骑行指数对公园广场的服务水平进行评价,弥补了现有评价方法的单一性缺陷。结果表明:主城区大部分公园广场骑行便捷度高,设施数量充足;东山副城公园广场分布合理,但数量应适当增加;江北副城大部分区域的公园广场数量和分布情况亟待提升和改进;仙林副城人口和公园广场分布较为稀疏,可作为城市建设的一个方向。研究结果可为南京市中心城区公园广场的规划建设和布局调整提供参考。

Research on Service Levels of Parks and Squares in Downtown Nanjing Based on Cycling Scores

As part of the urban leisure space,the service levels of parks and squares are of great significance to the residents′ recreation and reasonable allocation of leisure resources.Most of the existing evaluation methods for the service level of a park and square require establishing an index system or combining accessibility.There are,however,very few studies on travel modes,especially from the perspective of cycling.We have taken the parks and squares in downtown Nanjing as research objects and evaluated their service levels based on cycling scores.The service scope characteristics of the parks and squares were first recorded for different cycling time.Then the cycling score of a single point is calculated by evaluating the cycling convenience at each grid.By using the data collected by EasyGo,a cycling score was constructed from both the grid scale and sub-district scale on the basis of accessibility to assess the service level of the park and square.The results show that the accessibility of most parks and squares in the central urban area is high,the number of facilities is sufficient and the cycling is convenient.Distribution of parks and squares in Dongshan Sub-city Area is reasonable,but the number should be increased.The number and distribution of parks and squares in most regions of Jiangbei Sub-city Area need to be improved.The population and distribution of parks and squares in Xianlin Sub-city Area are relatively sparse,but it has good ecological environment suggesting for future urban construction.These results provide guidance for the planning,construction and layout adjustment of parks and squares in downtown Nanjing.