Original Research Article
Year: 2020 | Month: December | Volume: 7 | Issue: 12 | Pages: 549-559
Assessment of Land Use and Land Cover Changes (1988-2020) through NDVI Analysis and Geospatial Techniques
P. Swarna Latha1, K. Nageswara Rao2
1Post Doctoral Fellow-ICSSR, Department of Geography, Jamia Millia Islamia, New Delhi- 110025
2Assistant Professor, Discipline of Geography, School of Sciences, Indira Gandhi National Open University, New Delhi-110068
Corresponding Author: P. Swarna Latha
ABSTRACT
The present study analyzes the land use and land cover changes in a forested ecosystem of the Eastern Ghats in the Andhra Pradesh state of India. Landsat TM and OLI imageries are classified using supervised classification to find out the land use changes for a span of 32 years (1988-2020). It was found that substantial changes in the scrub forest category with a loss of 177 sq km (out of 842 sq km area) that occurred mainly due to various anthropogenic activities. The classification based on spectral data of Landsat TM and Landsat OLI produced an overall accuracy of about 92.3% for the year 1988 and 86.7% for the year 2020. The normalized difference vegetation index (NDVI) analysis has been integrated for improving the classification accuracy. In the study region, significant changes being occurred in the forested ecosystem and it must be restored for the welfare of the tribal communities who are largely depending upon the natural resources for their livelihood.
Keywords: Land use land cover, Landsat data, Supervised classification, NDVI, Remote sensing, GIS.
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