Page 46 - 2022 Abstract Book RUICHSS_2022_11_17 after conference

University of Ruhuna ISSN: 2706-0063
Matara, Sri Lanka

Identification of Temporal Changes in Land Use/Land Cover,
Normalized Difference Vegetation Index, and Land Surface
Temperature in Matara Municipal Council Area Using Geo-
Spatial Techniques
W.M.D.C. Wijesinghe
Department of Geography, University of Ruhuna.
dilnuchanuwan@gmail.com

Several studies have investigated the relationship between land surface temperature
and urban vegetation patterns, and they have discovered that remote sensing is a
timely and effective method for this type of analysis. Change detection in LULC of
any geographic location by using multi-temporal satellite imagery helps in
understanding landscape dynamics. The purpose of this research is to apply LULC,
and NDVI in the evaluation of land surface temperature using Geospatial techniques
and RS in the Matara MC area. Open source Landsat satellite data obtained from the
United States Geological Survey (USGS) in two different years were utilized to
identify and quantify LULC, NDVI, and LST changes. The obtained satellite images
were used for data processing and analysis after pre-processing processes and
clipping the area through Arcgis 10.8 software. These images were categorized using
the Maximum Likelihood Classification algorithm under the supervised image
classification there is a standard mathematical procedure for calculating NDVI and it
can be done using the Raster calculator command. Significant growth in building area
formation in land use can be identified in 2021 compared to the year 2001. It was
2
2
6.77 km in 2001 and 10.8 km by 2021. Vegetation cover is gradually decreasing
with increasing population and seasonal variation in land use patterns. By 2021, with
the development of road networks, buildings, and other infrastructure, higher
temperatures were reported in those areas. On the other hand, the minimum
temperature was 17.6 °C and the maximum temperature was 29.8 °C. Preliminary
findings indicate that there has been a significant increase in built-up areas within the
Matara Municipality area over about 20 years. The future urban environment can be
used productively in achieving sustainable urban development and planning through
eco-friendly approaches. Geospatial techniques such as GIS and Remote Sensing and
these methods can be used as an effective factor in the implementation of urban
planning and policies in other urban areas.

Keywords: LST, LULC, Matara MC Area, NDVI, Temporal

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