Investigating the Spatiotemporal Response of Urban Functions to Fine-Grained Resident Activities with a Novel Analytical Framework and Baidu Heatmap

作者：Dongxue Han, Deqin Fan, Jinyu Zhang, Xuesheng Zhao, Haoyu Wang · 发表于：Land · 年份：2025 · DOI：10.3390/land14112235 · 被引用次数：3 · 研究领域：Urban Transport and Accessibility、Human Mobility and Location-Based Analysis、Urban Design and Spatial Analysis

Studying the response of urban functions to residents’ spatiotemporal activity patterns is essential for understanding urban functions and guiding resource allocation. Unlike previous studies constrained by fixed intervals and static functional spaces, this study has developed an analytical framework to examine urban functional responses to residents’ activity patterns under dynamic spatiotemporal combinations. Tensor decomposition was employed to identify key temporal activity patterns of residents and dynamic urban functional patterns, while a Random Forest model was used to evaluate the contributions of five POI (Points of Interest) groups—Transportation, Organizations, Leisure, Habitation, and Basic Facilities—derived from a reclassification of 17 original POI categories, and the Elasticity Index (EI) quantifies functional responsiveness to activity changes. Results indicated that (1) four temporal patterns (sleeping, commuting, daytime, and leisure) and four spatial function types (the basic living area, the residential areas with mixed functions, residential areas with commercial functions and bustling business districts) characterized Beijing’s urban dynamics; (2) the five types of urban function varied with spatiotemporal context, with basic living POIs dominating daytime activities in residential zones and transportation POIs prevailing during commuting in mixed-use areas; (3) EI revealed significant spatial heterogeneity in adaptive capacities to activity transition...