| dc.description.abstract | : Urbanization responses to urban
expansion, and changes in green spaces.
Moreover, urban expansion has a significant
impact on urban management. Urban forests
(Green Spaces) provide benefits of the natural
environment to communities. Recognizing the
spatial pattern of urban expansion and green
spaces within a certain time period is vital for
urban planning. This study conducts to
examine the expansion in Tangalle town.
Built-up expansion occurs in recent years
because of the tourism industry in this study
area. The remote sensing indices, Normalized
Difference Built-up Index (NDBI) and
Normalized Difference Vegetation Index
(NDVI) have been used to extract built-up and
green spaces for identifying the spatial
pattern changes from the years 1990 to 2021.
According to the results of the urban
expansion/sprawl index, and urban areas
have been expanded slightly between year
1990, and year 2000, but decreased urban
expansion between year 2000, and year 2010.
However, between the years 2010, and 2021,
the urban area has sharply expanded by up to
13%. The study revealed that the built-up area
has increased enormously. NDVI shows that
the increase in this built-up area has led to a
decrease in significant agricultural lands and
open spaces. Thus, in the year 1990, the urban
form was an isolated urban pattern and
gradually became a cluster-based pattern.
According to the urban expansion results, the
urbanization is expanding towards the north
direction from the city center. | en_US |
