基于网络地图的合肥市公园绿地可达性研究  

Spatial Accessibility of Park Green Space in Hefei City Based on Network Map

作　　者：陈飞 仲冠南 吴庆双 万猛[1] CHEN Fei;ZHONG Guan-nan;WU Qing-shuang;WAN Meng(School of Geography and Tourism,Anhui Normal University,Wuhu 241000,China;Resources,Environment and Geographic Information Engineering,Anhui Engineering Technology Research Center,Wuhu 241000,China)

机构地区：[1]安徽师范大学地理与旅游学院,安徽芜湖241000 [2]资源环境与地理信息工程安徽省工程技术研究中心,安徽芜湖241000

出　　处：《安徽师范大学学报（自然科学版）》2023年第6期564-572,共9页Journal of Anhui Normal University(Natural Science)

基　　金：安徽省高等学校科学研究项目(2022AH050196).

摘　　要：建设分布均衡的公园绿地体系推进城市生态修复和完善绿地功能成为城市发展建设的重点内容,探究城市公园绿地资源的可达性及供需特征具有重要意义。本文基于高斯两步移动搜索法与双变量空间自相关的方法,在1km格网尺度下使用高德地图获取的三种交通方式下,基于实际路况下实时通行时间数据计算合肥市市辖区公园绿地可达性及供需空间差异,主要结论如下:①合肥市市辖区公园绿地可覆盖的格网单元数量占比以及人口数量占比随时间阈值的增加而增长。在15分钟通行时间阈值下,驾车与骑行方式能使大多数人获得公园绿地资源,而步行方式只有约一半的人口数量占比。骑行方式能够以较低的成本接近驾车方式,能让较多的人口数量获得公园绿地资源;②合肥市市辖区公园绿地可达性等级分布出现城郊差异,较低可达性等级集聚在人口密度较高的城市中心,而较高可达性等级集聚在人口密度较低的城市外围,整体上可达性等级呈现出从中心向外逐渐上升的空间格局。时间阈值的提升主要增加了公园绿地可达性范围,交通方式的改变更能提高公园绿地可达性等级;③基于供需平衡的公园绿地可达性聚类特征显示,总体上合肥市市辖区自中心向外依次呈现为“低供给-高需求”特征、“不显著”特征、“低供给-低需求”特征,城市核心区出现供应不足,而城市外围区域出现供过于求现象。结论可为合肥市市辖区公园绿地规划建设提供参考。Building a well-distributed park green space system to promote urban ecological restoration and improving green space functions has become the key content of urban development and construction.It is of great significance to explore the accessibility and supply and demand characteristics of urban park green space resources.Based on the Gaussian two-step floating catchment area method and the bivariate spatial autocorrelation method,this paper calculates the availability of the park green space in the municipal district of Hefei City based on the real-time travel time data obtained from the Amap at the grid scale of 1 km.The main conclusions are as follows:①The proportion of the number of grid units that can be covered by the park green space in the municipal district of Hefei and the proportion of the population grows with the increase of the time threshold.At the 15-min access time threshold,the driving and cycling modes provide the majority of people with access to park green space resources,while the walking mode has only about half of the population size share.Bicycling can be closer to driving at a lower cost,allowing more people to have access to park green space resources;②The distribution of park green space accessibility levels in the municipal district of Hefei shows urban-suburban differences,with lower accessibility levels clustered in the center of the city where the population density is higher,while higher accessibility levels are clustered in the periphery of the city where the population density is lower,and the accessibility levels on the whole present a spatial pattern of gradual increase from the center to the outside.Overall,the accessibility rating shows a spatial pattern of gradual increase from the center outward.The increase of time threshold mainly increases the accessibility range of park green space,and the change of transportation modes can improve the accessibility level of park green space;③The clustering characteristics of park green space based on the balance of supply and de

关 键 词：可达性 城市公园绿地 网络地图API 两步移动搜索法 合肥 

分 类 号：K901[历史地理—人文地理学]