Urban sprawl development around Aligarh city: A study aided by satellite remote sensing and GIS |
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Authors: | S Farooq S Ahmad |
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Institution: | 1.Department of Geology,Aligarh Muslim University,Aligarh,India |
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Abstract: | Rapid urbanization causes disorganized and unplanned growth of towns and cities. The pressure of an ever growing population
becomes a burden on the limited civic amenities which are virtually collapsing. Asymmetrical growth of urban centres consumes
agricultural land adjacent to these, resulting in lower agricultural productivity. Besides taxing the groundwater resources
available for an urban centre, an increase in the paved area severely reduces the groundwater recharge potential, leading
to situations which may truly be potential catastrophes. An understanding of the growth dynamics of urban agglomerations is
essential for ecologically feasible developmental planning. With almost a third of India’s population already having become
urban, it is necessary to acquire information on growth patterns of cities and how they impact the living environment. The
current trend of spatial urban growth in almost all Indian cities has a haphazard pattern, particularly along the urban-rural
fringe. There is an obvious need for continuously monitoring the phenomena of growth, and mapping and analyzing its patterns,
since this is of great concern to urban administrators and planners whose concern it is to provide basic amenities and infrastructure
for the complex urban environment.
Mapping urban growth by conventional methods is too tedious and a slow process, and by the time information becomes available
to planners, it is already outdated and redundant since the damage has already been done. Satellite remote sensing data and
application of GIS technologies provide an alter-native means of rapidly assessing the dynamics and development of sprawl
so that timely action may be taken. Besides being flexible and extensible, the datasets are easily rectified, updated and
may be used for other applications. |
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