Existing status and spatial characteristics of public open space after planning in Chiyoda Ward, Tokyo

Abstract

Public open space is a space that can be freely used by anyone and is becoming increasingly popular in Japan. This study categorized the spatial characteristics of public open space based on an analysis of its spatial composition elements. We also investigated how the land use of public open space has changed from the time of planning to the present. As a result, the spatial characteristics of public open space were classified into three categories: 1)the first is public open space for rest, 2)the second is public open space for long periods of rest, and 3)the third is public open space for interaction with nature. The change and the existing land use status of public open space up to the present was identified based on aerial photographs after the public open space plan were established. Furthermore, a comparison of the planned area of existing and non-existing public open space revealed that there are differences in the existing ratio depending on the location and the planning period, but not significant change in the size.