Creation of Land Resources Information System Using Geospatial Technology

Abstract

Introduction: One of the biggest and most noticeable changes in the surface of earth has been land cover from a variety of angles, including land use planning, environmental conservation, resource management and sustainable development, evaluating the LU/LC change at different levels geographical scales is essential.

Objectives: This study's primary objective was to examine changes in land cover and usage that occurred in Guntur Mandal, Andhra Pradesh, between 2004 to 2024.

Methods: In order to do this, the vegetation index like Normalized Difference Vegetation Index (NDVI) algorithm and a set of Landsat satellite images, including, two Thematic Mapper (TM) scenes and three Operational Land Imager (OLI) scenes from 2004 to 2024, were used to identify and enhance the discrimination between LU/LC categories. The image classification method like supervised classification method with the minimum distance classification algorithm was applied and generated the LU/LC maps.

Results: The built-up land was increased 12.74% from 2004 to 2024, the vegetation land was decreased 11.29% from 2004 to 2024, where the area occupied by vegetation is 73.89 per cent in 2004 where it is decreased to 62.599 per cent. The water bodies remained constantly (below 1 percent) in the study area.

Conclusions: The major change in vegetation area is in 2014 to 2019, it is about 6.95 percent area is decreased. This is mainly taken place after the declaration of Amravati declared as coming capital city of Andhra Pradesh.