Adaptation to Demographic Change: Depopulation, Aging, etc.
Japanese cities need some restructuring and reorganization to appropriate urban structure and land use, to create and maintain sustainabile and livable communities under the population decline and aging circumstances. However, some painful side effects are expected. Therefore, we are developing such planning methods and support tools as "Assessment Model of Future Urban and Regional Visions," "Land Suitability Assessment Model," and etc., to be applied at the locality.
Research on Land Suitability Assessment
To improve our city into a sustainable and livable building environment under the population decrease and aging circumstances, urban structure and land use should be reorgnized appropriately. However, this may accompany "painful" measures such as prevention of urban sprawl or urban shrinkage from inefficient areas in the suburbs. We worked with this research to provide a rational basis for these "painful planning desisions by viewpoints of evaluating suitable land use."
Image of Suitability Assessment
Comparative Study on Urban Shrinkage Methods for Compact Urban Form
Taking into acount the future decline of population and the current spread of urban area in Japanese local cities, it seems inevitable to study the way to shrink suburban area in some cities, to achieve urban sustainability by realization of "consolidated urban structure." Thus, the aim of this research is to study the procedures and implementation scenarios of systematic urban shrinkage, and make a comparative study between the scenarios by advantage (especially of costs and enviromental loads), operability, and applicability.
Study on Assessment Model of Future Urban and Regional Visions in the Depopulating Period
Taking in account of the progress of population declind and aging especially in the local cities and the increasing financial and enviromental restriction, we need to take urban policy measures based on "selection and concentration" to enhance provision of sustainable city. Such "selection and concentration" should be taken objectively and transparently through providing information and citizens participating in deciding optional measures that lead construction of future urban visions and their merits and demerits.
The purpose of this research was to develop a technological system for assessing urban policy by developing indexes to evaluate options that had been presented in advance concerning prospective images in cities and urban policy, and a technique for calculating the indexes from the viewpoint of sustainability of administrative costs, the quality of life and environmental load, and so on.
An Image of Assessment for Future Urban and