安徽农学通报2026，Vol.32Issue(2)：67-73,7.DOI:10.16377/j.cnki.issn1007-7731.2026.02.018
基于POI数据的城市用地功能识别及其空间布局特征分析
Analysis of urban land use function identification and its spatial layout characteristics based on POI data
摘要
Abstract
Based on Point of Interest(POI)data and relevant statistical data of the central urban area of Chongqing,this study adopts the methods of frequency density and type proportion to identify urban functional land use at three scales:1 000 m×1 000 m,500 m×500 m,and 200 m×200 m.The optimal spatial scale is selected to identify the land use functions in the study area,and the spatial layout of various functional land uses is analyzed.The results show that:(1)With the increase of spatial scale,the recognition accuracy shows an increasing trend,while the increase range shows a decreasing trend.The overall accuracy and Kappa coefficient at the scales at the three scales are 75%(0.743),81.3%(0.808),and 83.3%(0.828),respectively.Smaller spatial scales(individual pixel area)lead to higher recognition accuracy,but the calculation time increases accordingly,and the improvement in accuracy is not significant.After comprehensive consideration,200 m×200 m is selected as the optimal scale.(2)The distribution of urban land use functions has obvious regional differences,and mixed functional land and single functional land present the characteristics of core-periphery distribution.(3)POI data is feasible for urban land use function identification and can make up for the deficiencies of conventional research methods.This study provides a reference for optimizing the land structure ecological space layout and urban planning in this region.关键词
城市用地功能/空间布局/POI数据/土地混合利用/城市规划Key words
urban land use function/spatial layout/POI data/mixed land use/urban planning分类
管理科学引用本文复制引用
杨金勇,于善泳,乃皮赛·阿卜杜热扎克,陈馨渝,李栋,阿也提古丽·斯迪克..基于POI数据的城市用地功能识别及其空间布局特征分析[J].安徽农学通报,2026,32(2):67-73,7.基金项目
新疆维吾尔自治区社科基金项目"基于粮食安全视角的耕地'非粮化'时空演变及其驱动机制研究"(2023BYJ034) （2023BYJ034）
新疆农业大学校级大学生创新创业训练计划项目(dxscx2024052). （dxscx2024052）
