A Comparative Study of Urbanisation and Impact on the Natural Environment in Colombo City in Sri Lanka and Nagoya City in Japan Using Remote Sensing Data

摘要

[ABSTRACT] In this study we investigate a method to evaluate urbanisation and its impact on the natural environment of two cities which have different developing situations. Urban Index defined by the authors and the Normalised Difference Vegetation Index both derived from Landsat TM data have been used in the study to investigate the relationship between a city and its natural environment. As a case study, this method was applied to Colombo City in Sri Lanka and Nagoya City and it was found that the indices mentioned reflected the socio-economic position of the cities precisely.