| In recent years,China has entered the stage of social development of population aging,which brings new pressure to the development of society and cities.At present,home-based care services for aged is still the first choice for the elderly.Public resources,public services and public transportation in the community life circle carry the daily activities of the elderly.The physical activities of the elderly in daily life mainly include walking leisure physical activities and walking transportation physical activities.The walking physical activity of the elderly is affected by the built-up environment of different activity areas in the community life circle.The difference of its influence mechanism is related to the planning and construction of the elderly livable environment,which is the hot spot of the aging research at present.Optimizing the spatial form and layout of the built up environment of community life circle can effectively improve the level of walking physical activity for the elderly,and then help to provide scientific support for the elderly active health service supply and the elderly livable environment construction.In order to more accurately reveal the relationship between the healthy walking physical activities of the elderly and the built environment of the place where they live and the specific forms of expression,this research determined the index system based on Cite Space’s Bibliometrics tools and field research methods;through Baidu POI,web crawler and geographic information system(Arc GIS)and other multiple information technology to obtain data;and then use SPSS software multiple logistic regression method to establish statistical model and carry out quantitative analysis.In order to comprehensively and deeply analyze the relationship between the built-up environment of life circle and the walking physical activity of the elderly,firstly,systematically sort out the research sequence of physical activities and built environment related to urban and rural planning in recent 15 years at home and abroad,and the hot research directions are summarized from the research object,type of physical activity,built-up environment elements and evaluation methods,etc.,and the index system and methods of built-up environment and physical activity research are summarized;Secondly,this paper’s research hypotheses put forward according to the characteristics of the elderly’s walking demand from the perspective of life circle,and takes Heping District of Tianjin city as an example,15 residential areas were randomly selected,and constructs a multiple logistic regression model of the influence of environment on the physical walking activities of the elderly from the perspective of 5 minutes,10 minutes and15 minutes walking life circle;Thirdly,according to the research results of the model,this paper analyzes the differences of the built-up environment of different types of walking physical activity time of the elderly,and the differences of the built-up environment of different scales on the walking physical activity time of the elderly,and clarifies the differences of the built-up environment on the different types of walking physical activity time,and it is proved that different scales of the elderly walking physical activity time have different emphases on the environmental impact factors.Finally,based on the multidimensional relationship between the built environment and the elderly’s walking physical activity,this paper puts forward the optimization and promotion strategies of activity orientation,space stratification,time diversification and hierarchical optimal configuration of the built environment of community life circle from the four dimensions of behavior,space,time and medical facilities.It provides technical support for the construction of a community living environment suitable for the elderly walking activities,and provides a guiding research path for the comprehensive and effective promotion of physical activities of the elderly to achieve healthy aging. |