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Improvement of the walkability of the 15-min community life circle can enhance convenience for residents to obtain daily service facilities. In this paper, by obtaining the Point of Interest (POI) data of daily facilities used by Shanghai residents, we calculate the walk scores of community residents within 15-min walking distance using the walkability assessment tool and analyze the results with population density for spatial correlation. The results show that communities with high walk scores are concentrated in central areas, with low walk scores are scattered in the suburbs of the city. Walking scores are high for access from communities to bus stops and commercial services but low for access to parks and primary schools. The formation of a compact and accessible spatial layout can significantly improve the walkability of the community. Walkability is not only related to the construction of facilities in terms of quantity and space but is also influenced by the degree of spatial clustering in the community. It needs to be reasonably configured in conjunction with the spatial distribution of the community in order to effectively improve the utilization of facilities. Finally, community walkability is significantly and positively correlated with population density.

From the perspective of 19 urban agglomerations and comprehensive transportation between them, this study, selecting node cities as research units, defines both the narrow and generalized corridor accessibility to calculate the corridor accessibility coefficient by the weighted average travel time and investigates their overall pattern. The gravity model improved by comprehensive-time cost is used to calculate the economic subordination degrees between Lanzhou–Xining urban agglomeration and other urban agglomerations. Moreover, the differences in the spatial distribution of inter-provincial logistics connectivity between the individual and total amount in Gansu province are discussed, and then the unbalanced trend of spatial connection is analyzed. The results indicate that the horizontal gradient of accessibility of different regions in China has statistical differences and the time-space compression caused by the layout of main transportation lines in Gansu province presents a typical “corridor effect.” The inter-provincial logistics economic relations in Gansu province demonstrate significant stratification characteristics and an unbalanced “neighbor effect” while there are few provincial groups directly connecting with Gansu province. Finally, based on data analysis and logical deduction, the paper analyzes the current situation, discusses the existing shortcomings and strategic advantages of Gansu province, and tries to give development suggestions in terms of the current opportunities as well as responsibilities.

In the context of China’s recent urbanization, the agglomeration and diffusion of the strip-city spatial network are gradually being reconstructed. The ways in which the street network structure affects the underlying logic of economic and social development is worthy of in-depth consideration. This study takes Lanzhou (a typical strip city in China) as a case study, using dynamic, geographic, big data and spatial syntactic-theory models to explore the influence of street network accessibility and structure on the spatial and temporal distribution of strip-city spatial vitality. We use Hotspot Analysis (Getis-Ord Gi*) to analyze the dispersal characteristics of street space vitality. In addition, the spatial and temporal heterogeneity characteristics and mechanism of the influence of street accessibility on spatial vitality are evaluated using the spatial Durbin model (SDM). The results show that: the temporal and spatial performance of urban vitality on weekdays and weekends conforms to people’s daily activities, offering similar spatial agglomeration and dispersion effects; accessibility and pedestrian-friendly streets have better urban spatial vitality clustering; street network integration significantly affects the reshaping of urban vitality, but there is apparent temporal heterogeneity in the degree of impact.