no124-131

[125] Analyzing Spatial Dependency Structure on Adjacent Municipalities Evaluated by Cross-border Facility Use Estimation

○Masato Sano¹, Sunyong Eom², Tsutomu Suzuki² (1. Ministry of Land, Infrastructure, Transport and Tourism, 2. University of Tsukuba)

Keywords:cross border, regional facility, accessibility, urban core plan, regional cooperation

Regardless of spatial expansion of living areas, city planning is usually considered by unit area divided by the border between local municipalities. This study aims to clarify cross-border effect of using urban facilities focusing on travel distance. First, we construct an inter-municipal network with 5,101 cross-border links of 1,719 local cities nationwide and quantify cross-border effect by outflow/inflow rate and cross-border effectiveness. Second, it shows that almost 10 percent of populations travel shorter distance by cross-border use, and the gap up to almost 30%. Second, cities with low facility sufficiency show a high effectiveness, but some cities with high sufficiency also show a high effectiveness. Third, Gini coefficient that quantifies inequality of outflow/inflow among neighboring cities, shows that local cities have a limited range of cooperation, but cities in the metropolitan areas show wide cooperation with neighboring cities.