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Environmental Vulnerability
Assessment for South-West Region of Delhi using GIS based AHP tool
Nipra Sharma1, Parmita Bose2,
Priyanka Kumari3, Amarjeet Kaur4*
1University School of
Environment Management, 2GeoSpatial Delhi Limited, 3,4Centre
of Excellence in Disaster Management
Guru Gobind
Singh Indraprastha University, Sector -16 C, Dwarka, New Delhi – 110078,
India
E-mail: 1niprasharma90@gmail.com,
2parmita.bose@gmail.com,3 doctorpriyankakumari@gmail.com, 4*director.cdms@ipu.ac.in.
Satty’s Scale;
AHP model;
Vulnerability;
Urbanization;
Migration
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Abstract
Delhi is developing rapidly and rushed unplanned
decisions are giving rise to mixed land use land cover area. It is in turn
increasing the infrastructural complexity and therefore making the country
more vulnerable. Growing urbanization is
becoming a global trend; the concern regarding environmental vulnerability
is a major apprehension. Vulnerability is accessed with respect to
social, infrastructural and environmental problems using Analytical
Hierarchy Process (AHP) model. The class wise weights and category wise
weights were assigned based on the Satty’s Scale
to all the 21 indicators discussed above. The pairwise matrix and CR value
is calculated. The resultant vulnerability map developed using AHP tool was
divided into five categories of vulnerability as: low, medium low, medium,
medium high and high. The peri-urban area is more vulnerable than urban
areas. In urban areas those regions where the development has taken place
erratically is identified as vulnerable due to high population density. Also one more observation is made in this model, the
social factors like illiteracy and unemployment are also observed to be
impacting along with environmental aspect parameters. It was observed that
only 10% of the total area falls under the high vulnerability class whereas
25% falls under medium high category.
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