| dc.description.abstract | The extensive history goes back to
urban development, and human convinced buildup
area and urban spreading through the specific
region is one of the most important areas of
human-induced urban expansion. Due to the
unplanned urban expansion, Urban sprawl is a
prominent issue in the cities nowadays. In
today’s world, these have become important
topics in many scientific fields. This study probes
the expansion of the 13 GN divisions in the
Weligama urban council area. The main
objective of this research is to find the urban land
expansion index (SI). Remote sensing and GIS
(Geographical Information Science) provide
some methods for finding the expansion index
using satellite imagery. Satellite images were
used in 2005, 2010, 2015, and 2020 as primary
sources taken by USGS earth explore. By using
the NDBI (Normalized Difference Built-up Index)
extract the built-up area and then the urban
expansion index/sprawling index (SI) were
calculated to identify the expansion of the study
area. Finally, the maps of expansion of the builtup
areas were prepared in Weligama urban
council area to identify the urban expansion
index. Considering such context for the town
planning, it is better to use the expansion and
sprawl analysis method to determine the
extension patterns to create sustainable
development. As per the results, the region has
slightly expanded between 2005 and 2010, but
between 2010 to 2015 and 2020 it takes a
moderate speed for expanding the Weligama
urban council area. Consequently, the final
output shows that the urban expansion has
happened along the beachside to the city center
area. | en_US |
