Analysis of City Environmental and Land Price Changes in the Tokyo Metropolis Using Remote Sensing and GIS

摘要

The urbanization around the center of Tokyo expanded with increasing population of Tokyo. The housing establishment and city traffic developed the suburbs which were once agricultural areas, especially until the beginning of “economic bubble time” from the late 1980s to the early 1990s when land price and stock increased very much. The area of the Tokyo metropolis already amounts to about 100 km 2 and many cities exist also on the fringe of Tokyo. Land price is a quantified economic barometer which shows the utility value of land. It is the comprehensive value which reflects environmental condition and many functions of a city. The influence of urbanization affects the land surface temperature which is dependent on the amount of vegetation. In order to evaluate the environmental link between the greeneries on environment, and the land price of a residential section, correlation between vegetation index and land price data of Tokyo, Chiba Prefecture, Ibaraki Prefecture, Saitama Prefecture, and Kanagawa Prefecture (Tokyo metropolis) for the period from 1983 to 2002 is investigated. The correlation analysis is carried out in the center of Tokyo station and 7 continuous buffers of 10kms from the centre of city towards the periphery. This study shows that spatial distance and land price have negative correlation. It is obvious the economic bubble time is characterized by a very high land price in the center of Tokyo. However it had small effect on the price in areas far away from the center. In the center of Tokyo and the first ring-buffer it is found that higher topographic areas are more valued than lower areas. Whereas the land price maintains a negative correlation between RVI (The Ratio Vegetation Index), which is derived from from Landsat TM (Thematic Mapper) data (January 1985, February 1996).