Public Space Vitality Assessment Of Urban Forest Greenway Based On Multi-source Data

With the continuous expansion of the city scale,urban forest construction has been developing,macro-level policies and regulations have tended to improve,and vigorously carry out the construction of forest cities has become the direction of China’s urban development.Xiamen Shanhai Fitness Trail is an urban forest trail in Xiamen,located in the center of Xiamen Island,which is a beautiful “business card” of Xiamen.The trail is now 23 kilometers long,starting from Dongdu Cruise Terminal in the west to Guanyin Mountain Fantasy Beach in the east,running through the important ecological nodes in the north and central part of Xiamen Island,linking the “eight mountains and three waters”,meeting the needs of the public for daily leisure and sightseeing,sports and fitness,and ecological recuperation,bringing vitality to the city,but also exposing the problem of vitality caused by the homogenization of public space.The problem of decline.There is a lack of research on the vitality of the public space of urban forest trails,and there is a lack of systematic research methods and explanations of the internal causes of vitality in the public space of urban forest trails,resulting in a lack of effective guid ance for the later construction of the Xiamen Shanhai Fitness Trail and its surrounding public space.Taking the public space of Xiamen Shanhai Fitness Trail as an example,this study explores the correspondence between spatial vitality representation and public space,and theoretically connects the vitality of environmental composition and the vitality of environmental landscape elements with the vitality representation space of Xiamen Shanhai Fitness Trail respectively.Combined with the theory of urban morphological vitality,we classify the vitality of environmental elements of public space in four directions: economic,structural,cultural and landscape,and get the quantitative index system of Xiamen Shanhai Fitness Trail public space.The actual dynamic crowd vitality characterization data for 6 days of weekdays,rest days and holidays were obtained through Baidu heat map,and the spatial and temporal distribution patterns of different types of dates were analyzed,after which the average vitality intensity and vitality stability were calculated to obtain 17 environmental element indicators that may affect the vitality of Xiamen Shanhai Fitness Trail public space,and 2 types of vitality indicators that can reflect the real crowd gathering degree and fluctuation.The indicators were quantified in the grid,and the characteristics and distribution patterns of each indicator in the public space were explored.The SPSS mathematical statistics software is used to determine the significance of the correlation between each indicator,and finally,the multiple linear regression equation is used to obtain the ideal state of vitality that can be carried by the environmental components in the current state,and then it is compared and analyzed with the real vitality representation to investigate the environmental mechanism of the vitality representation,and to propose more meaningful strategies to enhance the environmental components in the current state of the plot.The study concludes that:(1)The main reason for the concentration of the environmental indicators and the actual vitality representation of the public space of the Xiamen Shanhai Fitness Trail in the center of the study area is that the indicators of each vitality direction in this area are at a high level.The west side of the study area,as the beginning of the Xiamen Shanhai Fitness Trail,is rich in environmental landscape elements and densely populated with cultural industries,so the environmental elements’ vitality and actual vitality representations are better,but for the east side,the mobility of the crowd in Guanyinshan Beach and Software Park area is strong,but the environmental elements’ vitality is weak.(2)The temporal distribution pattern of the heat map of Xiamen Shanhai Fitness Trail public space shows that the intensity of crowd vitality on holidays is higher than that on weekdays than on rest days,and the crowd commuting behavior will strongly influence the degree of crowd gathering and mobility in the public space of Xiamen Shanhai Fitness Trail,while the trough is reached around 14:00 in the afternoon on different days,considering that climate is the main factor that causes the intensity of crowd activity to decrease.The main factor is climate.(3)The ideal vitality value of the environmental composition of Xiamen Shanhai Fitness Trail public space under the current environmental factors was calculated by multiple linear regression equation,and the spatial visualization of it was compared and found that the vitality intensity and vitality stability in the ideal state of the environmental composition vitality in the northern area of the study area were lower than the actual vitality intensity and vitality stability,indicating that the environmental composition vitality in the northern area did not reach the actual population vitality representation that it could carry At the same time,the ideal environmental constitutive vitality in the eastern Guanyin Mountain area is higher than the actual vitality,which indicates that the eastern area has good development potential.