| As China’s urbanization process continues to deepen,the flow of information and materials in cities is becoming more frequent.At the same time,the lack of planning,uneven development,and disordered space in urban built-up areas is also taking place,and problems such as declining urban space quality and loss of vitality have become increasingly prominent.The analysis of the spatial perspective of a single material can no longer meet the requirements of the current city,and a more comprehensive and dynamic means becomes a new way to interpret the inner relationship of urban space.Therefore,this study focuses on the distribution characteristics and impact mechanism of urban vital space.This paper takes Shenyang Central City as the research object.Firstly,Baidu real-time thermodynamic map is used to analyze and extract the spatial distribution characteristics and migration trajectory of human clusters.Then,the layout of continuous high-vibration space and high-vibrancy difference space in physical space is explored.After that,high-order POI data is used.The spatial layout density,blending degree and other characteristics of the physical facilities are analyzed,and the physical functional areas are divided.The layout status of the physical facilities in the central urban area is expounded.Finally,the obtained human cluster clustering dynamic spatial distribution map and The urban POI physical facility layout map explores the correlation between the two through image coupling,mathematical analysis,and line analysis.Then,combining the peripheral elements of the typical dynamic space and the type of land for spatial analysis,field research,and comparison with the superior planning,The impact mechanism affecting the spatial distribution of urban vitality is obtained.The main research results:(1)The variation characteristics of the population dynamic area distribution on working days and rest days are significantly different.The working day shows a strong regularity,while the activities of the rest day crowd show a stronger difference and randomness.Relative to the center of gravity,the focus of employment distribution in the central city is more northwest;the business center of gravity is more northeast.(2)The continuous high-vibration space and high-activity difference space in the central urban area of Shenyang are basically distributed within the scope of the Sanhuan Expressway.The distribution is generally concentrated and partially dispersed.There is no particularly significant centrality.The core of the Hunhe River is at the core.There are significant differences in the development of the region.(3)The spatial layout of various types of POI physical facilities in the central urban area shows great differences,among which the physical facilities such as employment,transportation and medical care vary greatly on both sides of the river;the overall distribution density of physical facilities and the overall distribution of the distribution also show With a large spatial difference,the three districts of Tiexi,Heping and Shenhe reflect a very high level of agglomeration;the mixed functional vitality area of the central urban area accounts for a relatively high proportion,and most of them are within the three-ring expressway(81.7%).The distribution shows a biaxially expanded form,one is the transverse axis centered on the Hunhe River,and the other is the longitudinal axis centered on the golden gallery and its extension direction.(4)The layout density and the degree of mixing of various types of physical facilities in the city are highly correlated with the distribution pattern of urban people’s clusters and concentrated living spaces.The high-vibration space is the highest proportion of commercial and commercial land,and the three types of land compatibility and business composition of the Transport-business-office,LeisureCommerce-Business,Business-Transport-residence are extremely beneficial to the shaping of urban vitality space. |
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