Research on Spatial Distribution Characteristics of Zhanjiang Industrial Structure Based on POI Data Clustering

Abstract

Taking 5 counties and 4 districts of Zhanjiang city as the study area, there are 119,900 POI industry classification data introduced to analyze the urban spatial structure and industry spatial structure of Zhanjiang city by standard deviational ellipse, kernel density estimation, DBSCAN and other methods. The analysis results show that the urban elements in Zhanjiang are in a significant clustering form, and the degree of urban elements clustering is equal to the level of urban economic development. The internal structure of Zhanjiang city takes Chikan District and Xiashan District as the center and radiates from inside to outside, with Lianjiang, Suixi and Xuwen as the main node cities. In addition, The primary industry, secondary industry and tertiary industry show the distribution characteristics of "large clustering-small dispersion", with the central region as the main area, forming point and flake industrial clustering areas, and the centripetal force of the secondary and tertiary industries is stronger. The secondary industry is well developed in the central region, while the other main node cities are not well developed, but they still have potential and can be further optimized and upgraded. It can be proved that the spatial distribution characteristics of a city's industrial structure can be mastered through POI data clustering, so as to provide scientific reference and suggestions for urban construction.