직장접근도비를 통한 수도권 지하철 역세권의 통근이용잠재성 분석

Abstract

The purpose of this research is to calculate and investigate job accessibility ratio and commuters' subway use index in the catchment areas of the Seoul Metropolitan Subway in order to enhance its use through land-use reorganization policy to the areas. In this research job accessibility ratio indicates subway use potential for commutation and commuters' subway use index is related with real commuting subway users. The two indexes were calculated by the accessibility measurement model developed using raster GIS combined with networks coded as vectors. The research drew three important results after applying the indexes for the Seoul Metropolitan Area. First, there exist remarkable differences between job accessibility ratio and subway use index in the catchment areas located in the city center and inner suburb. This means that the residents in those areas are distributed regardless their subway use potential. Second, the catchment areas in the city center and inner suburb show low efficiency in using subway for commutation according to the comparison between subway use index and real commuting subway users. Third, the catchment areas in the city center which show relatively high weighted average and low GINI coefficient of job accessibility ratio own evenly high subway use potential for commutation. From the results it can be concluded that a land-use policy increasing the number of resident in the catchment areas of the city center and inner suburb is necessary to effectively enhance the subway using rate for commutation.