gis project abdul qadir
TRANSCRIPT
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INTRODUCTIONThe recent development of spatial data
infrastructure in the frame of geographic
information systems (GISs) has created
the new era of different applications in
the field of environment.
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WHY GISNOTCONVENTIONAL
APPROACH
1) Conventional approaches has limitations
2) Cost factor
3) High mentanace
.
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CITY DESCRIPTION
IN TRIVENDRUM , average traffic counts have increased over the previous
year and have been climbing at about that same rate for the past many years.
Vehicle emissions are responsible for the majority of CO, hydrocarbons, NOx,
SO2 and inhaled particulate matter present in the atmosphere of the city.
At the same time the influence of meteorological conditions is also analyzed.
The entire city has got only 4 ambient air quality monitoring stations. With this
limited number of stations, to represent the air quality in Trivendrum spatially
is a difficult task.
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METHODOLOGY
Surveys for air pollutants as NOx, and SO2 were conducted.The sampling stations were located in PRS HOSPITAL and SMV
HIGH SCHOOL in the city heart.
The measurement was taken on daily basis and averaged for the
whole month and the data for the four years of the above mentioned
locations were taken.
The methods for calculating SO2 was WEST AND GAEKE method
and for NOx it was SODIUM ARGENITE method.
The pollutant concentrations for different years are visualized in the
histograms view of the Trivendrum urban area.
ARC GIS software was used.
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DATAUSED
(NOTEALLDATAISINMICROGRAMSPERMETERCUBE)
NO2
jan feb march april may june july aug sept oct nov dec
PRS 2006 0 0 0 0 0 25.44 24.96 23.21 25.04 22.65 22.8 26.25
SMVHS 2006 0 0 0 0 0 27.68 25.11 28.35 26.92 24.24 23.49 31.93
SO2
jan feb march april may june july aug sept oct nov dec
PRS 2006 0 0 0 0 0 6.34 6.52 6.43 7.08 6.73 5.57 6.8
SMVHS 2006 0 0 0 0 0 6.53 6.3 6.79 6.89 5.61 5.57 7.01
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ANALYSIS
With the dataWith the data collected,an attribute table was created
in ARG GIS and with the help of properties BAR diagram of the
pollution data was plotted.
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NOX DATA
2006
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S02 DATA
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RESULTSIt was found that the emission of NO2 and SO2 has increased
at an alarming pace but still they havent reached a
dangerous limit.
If suitable measures were taken then pollution hazards maybe controlled.
The vehicle population has increased with time.The ambient
air quality of trivendrum has deteriorated with an increase in
the number of vehicles and industrial pollution.
A recent study by the State Pollution Control Board (PCB)
found that the levels of suspended particular matter (SPM)
has increased at several places
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URBANISATIONThe urban changes has been shown in the outer
trivendrum city region
The images were taken in 4 years time period gap andurbanized region was found out as shown in the images
below
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and after urbanisation
Before urbanisation
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