Assessment of Urban Expansion in the Case of Dukem Town Using Remote Sensing and Gis Techniques
No Thumbnail Available
Date
2012-03
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Addis Ababa Universty
Abstract
Urban Change Detection Urban environments are among the most dynamic systems on earth. Rapid urban expansion
necessitates proper planning to avoid profound negative environmental and socioeconomic
impacts. Geographic Information Systems (GIS) and Remote Sensing technologies provide very
efficient tools to collect and analyse the information necessary to detect changes in urban areas
that conventional surveying technology can't deliver in a timely and cost effective manner. GIS
and Remote Sensing techniques were used in this work to locate and estimate the expansion of
urban areas in Dukem town. Rapid urban expansion has caused not only social problems, but also
environmental and socioeconomic problems in the town. The results show massive urban
expansions during the study period. The population dynamics are the factors that make the
population of certain area to change over time. In this case in 1986 the population of the town
was 3736 and the built up area 43 hectare. The population was increased to 6356 in 2005 likewise
the built up was expanded to 505.3 hectare. In 2010 the population became 25214 and the built
up was expanded to 1095.44 hectare. From 1986-2005, the population of the town was increased
by 2620 i.e. 70.13% and 2005-2010 it was 8858 i.e. 275.2%. The built up area of the town was
increased by 462.3ha i.e. 1075% from 1986-2005 and it was expanded to 590.14ha i.e. 116.8%
from 2005-2010.Population, nearness to Addis Ababa, and poor policy implementation are the
major factors that derive horizontal expansion in the town.
Keywords: Urban expansion, Remote Sensing, GIS, Urban Change Detection
Description
Keywords
Urban expansion, Remote Sensing, GIS, Urban Change Detection