Research On Temporal And Spatial Distribution Pattern Of Night-time Economy Supported By Multi-source Data

Night-time economy refers to the relevant economic activities based on urban space and dominated by service industry at night.Its business forms include night shopping,night catering,etc.Following the pace of reform and opening up,China’s night-time economy changed to a diversified night consumer market.It has become an important way to upgrade consumption and service industry.Foreign scholars’ research on night-time economy mostly focuses on hidden economic influencing factors such as urban safety.Domestic scholars mainly focus on night-time economic theory and policy,or use traditional market research and other methods to quantitatively research the temporal and spatial distribution of night-time economy in a single functional area,and lack of in-depth mining by using models and mathematical statistics,rarely use multi-source data to intuitively display the specific temporal and spatial distribution of large-scale night-time economy from multiple angles.Based on multi-source data such as night light,POI and OD flow,this paper studies the temporal and spatial distribution pattern of nighttime economy in Xiamen City from three aspects.(1)Extract the ‘light built-up area’ by using the night light data,identify the distribution range of night service facilities,and analyze the spatial distribution of night service facilities within the ‘light built-up area’.(2)Gaussian kernel density estimation equation is used to distinguish the semantic distribution of O and D points,and point clustering and flow clustering are used to identify nocturnal activity agglomeration areas and flow patterns.(3)The correlation between night service facilities and night activities in Xiamen City is calculated by using least square linear regression and geographic detector,and the profit and loss method is used to analyze the relationship between supply and demand.Research shows:(1)The distribution of night service facilities in Xiamen City is spatial positive correlation aggregation;Night service facilities are distributed in a ‘slice’ or ‘belt’ shape on Xiamen Island,while in the mainland,they are distributed in a multi-center discrete distribution with Datong,Yingqiao,Jimei and Haicang towns as the core,forming a spatial differentiation model of ‘large aggregation of Xiamen Island and small dispersion in the mainland’.(2)The nighttime activity density in Xiamen City gradually decreases outward from the geometric center of Xiamen Island,showing a multi ring distribution.The nighttime activity density can be divided into three decline forms: gentle,anti-S and fluctuating;The cluster area of night-time activities in Xiamen City is roughly consistent with the cluster area of service facilities in Xiamen Island,in which the cluster area of night residential,work and catering activities is transferred between holidays and working days.(3)There is no obvious difference between the interaction types of night activities on weekdays and holidays in Xiamen,which are mainly entertainment interaction;The clustering scale of short-distance flow is community level at 100m-250 m,and the clustering scale of longdistance flow is town level at 965m-2025 m,including aggregation,dispersion,distribution cluster,interactive cluster and other flow modes.(4)There is only a moderate positive correlation between residential population density and night-time activity density in Xiamen City,which is not an absolute influencing factor of night-time activity;The impact of night service facilities on night activities is almost the same on weekdays and holidays.Catering,shopping,entertainment and residential facilities are the night service facilities that have the greatest impact on night activities.(5)There is little difference between the profit and loss distribution of the same service facility on working days and holidays at point D.Night service facilities supply shortage areas are all concentrated on Xiamen Island and are distributed contiguously,while night service facilities supply surplus areas are scattered.Finally,this paper puts forward measures to support the development of night lighting infrastructure and night services for different people in Xiamen City in the future.The research conclusion has positive significance for promoting social employment.At the same time,it can also provide reference for night-time economic development and relevant policy-making.