基于POI数据的城市功能区识别研究

Research on the Identification of Urban Functional Areas Based on POI Data

基于兴趣点数据与道路网络数据,选取济南市中心城区为研究区域,通过频数密度与类型比例计算,以街区为研究单元对济南中心城区功能区进行定量识别,并验证识别精度。将识别结果与《济南市城市总体规划(2011-2020年)》对比,提出功能区优化对策。研究结果表明:城市功能区自西向东呈现多中心分布特征,单一功能区呈现圈层分布特征。构建混淆矩阵,计算出功能区总体精度为83.34%,可为济南市功能区空间规划提供新的思路。

Based on POI data and road network data,taking the central urban area of Jinan as the research area and the blocks as the research unit,we used ArcGIS spatial analysis tools to quantitatively identify the functional areas of central urban area of Jinan,and calculated the Kappa coefficient to verify the accuracy.Then,we compared the identification results with Urban Overall Planning of Jinan City,and proposed the optimization countermeasures for functional areas.The research results show that①urban functional areas present multi-center distribution from west to east.②A single functional area is characterized by a circle distribution.③The overall accuracy of functional area calculated by confusion matrix is 83.34%,which can provide a new idea for the spatial planning of functional areas in Jinan City.