Abstract
At present, the new concept of community life circle has become the common pursuit of people, in order to create a residential space with intensive land use, environment-friendly, full of vitality and diversity of facilities. In 2016, Shanghai issued the guidelines for the planning of 15 minute community life circle in Shanghai, "15 minute community life circle", which proposed that there are perfect public facilities such as education, commercial transportation, sports, pension and so on within the 15 minute walking distance of the home-centered. However, due to the heterogeneity of urban space, there are great differences in the scope of residents' life circle in different locations and different types of residential areas. Understanding the current situation of life circle and comparing with the goal of 15 minute life circle is the basic guarantee for the implementation of life circle construction. Based on the mobile signaling data, this paper takes the central urban area of JianShui County as the research object, and selects each residential area of JianShui County as the analysis sample to analyze the current situation and characteristics of community life circle in the central urban area of JianShui County. This paper analyzes the difference of day and night population vitality in the central urban area of JianShui County by using mobile phone signaling data. Two measurement methods, population vitality and 15 minute life circle coverage, are used to describe the problems existing in the current life circle. According to the problems existing in the community life circle, and the corresponding population concentration and space-time differences in the demand for public service facilities, further differentiation guide the construction of community life circle in JianShui County.
