Public service facilities implantation mode research for existing communities based on ArcGIS analysis

China's urban construction has come to the stage of refined regeneration after a period of decades of rapid urbanization. While the existing communities' regeneration is facing more competitions. As one of the most important subjects in city regeneration, to perfect public service facilities' distribution and to improve its quality are two main jobs. However, there is no surplus land to construct big facilities' buildings, besides, inhabitants' needs tend to be diversified. The discrepancy between these two aspects has become one important problem in existing communities' regeneration. Based on it, this paper proposes a mode of implanting public service facilities into the existing communities which mainly contains two aspects. In terms of function, filter and classify the public facilities which can activate communities' vitality, then analysis different kinds of current facilities' deficiency by ArcGIS to make a decision of facilities' types. In terms of space, there mainly contains three parts. First of all, do typological analysis of existing communities' space, then, design corresponding implantation strategy for each type, taking facilities' function, such as restaurant and retail business, beauty salon, small theatre, tea house, etc. into consideration. At last, combing the existing communities' structure, make sure these public facilities open to the city rather than the residents only, and open to all ages. As result, create a public place shared by the whole city. This study's final goal is to try to offer a new mode of existing communities'
regeneration and to provide a reference for making and revising related norms.