| Since the reform and opening up, China’s economy has been continuing to grow rapidly. However, the non-balanced economic development has been widening the income gap between the rich and the poor, between regions, and between the urban and the rural. Due to the economic and political advantages, the rich often grab public resources and public services. And unfortunately, the non-equilibrium occupation in public resources and public services between the rich and poor make the rich get richer and the poor get poorer. In order to carry out the principle of fairness and justice, and to provide basic public services, China has proposed a policy-equality of basic public services-to provide equal services, and ultimately achieve equal results.In this paper, Xiamen affordable housings (also called social housing) are selected as case studies, estimating the availability of public service facilities in the view of transport costs. Generally, travel is a basic means of accessing public service. Thus, people have to choose a transport mode to access public services. Different modes of transport are varied in transport costs (travel time, travel distance). Therefore, people choose different traffic modes to meet different levels of public services. Since the low-and middle-income people use walking, cycling, and public transport as daily traffic mode, this paper divides the space into three levels-walking accessible space, bicycle accessible space, and bus accessible space. Then, using ArcGIS and AHP analysis methods, it estimates the public service facilities in different traffic accessible space. The relative evaluation is adopted to estimate the fairness between affordable housings, while the absolute evaluation is adopted to estimate the fairness of affordable housings throughout the urban environment. The result will help to construct "livable Xiamen","happiness Xiamen", and "Xiamen blueprint of housing security". |