Spatio-Temporal Dynamics of Urban Land Use Applying Change Detection and Built-Up Index for Durgapur Municipal Corporation, Paschim Bardhaman, West Bengal

In eastern India, Durgapur is one of the fastest growing cities. The land cover and land use of Durgapur are shifting very hurriedly due to urbanization, which adversely impacts the local land resources there. This study was done from 1991 to 2021. To an attempt was made in this study to determine how the urban growth area grew over time. Aside from that, an attempt has been made to examine the pattern of urban expansion in Durgapur. Normalized Difference Vegetation Index and Normalized Difference Built up Index, Built up Index were analyzed to evaluate the urban expansion of Durgapur city from 1991 to 2021. According to the findings, vegetative area is decreasing in the city central areas (13.9–6.32%) while built-up area percentages are increasing in the central areas (78.42–84.75%). In 1991, the mean value of the built-up index in the study region was 0.04, which was transformed to 0.1 in 2021. Within a thirty-year time span, the degree of modification in the Built up area is perfectly visible.