1. Estimation of spatiotemporal dynamics of urban sprawl in Bengaluru Urban agglomeration using earth observation datasets.
- Author
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Sandeep, Pundoor, Saju, Haritha, and Kumar, Karikkathil C. Arun
- Subjects
URBAN-rural migration ,WATER management ,URBAN growth ,CITY dwellers ,URBAN planning - Abstract
The urban population of India has increased fivefold during the last five decades. Monitoring and estimation of urban sprawl are crucial for urban planning, land and water resource management, facility allocation, etc. The present study is aimed at making an in-depth analysis of urban dynamics in the Bengaluru Urban District by using three different indices: the built-up density index (BUDI), the annual urban spatial expansion index (AUSEI), and the annual built-up change index (ABCI), along with temporal satellite data and GIS. The study reveals that an exponential outward urban expansion has taken place in the study area from 1993 to 2020, mainly due to the development of the co-working industry, migration of people from cities to outer areas, high population growth, rapid and significant growth in the IT field, economic growth, and developments of road networks. The analysis shows that about 21.08% of growth was taken in terms of the urban area during the period from 1993 to 2020, and such changes led to the irreversible conversion of rural land into urban land. The analysis of BUDI shows that the density of the study area increases periodically and densifies toward its outer parts. The AUSEI shows that the minimum changes in respect of annual urban expansion were observed during 2003–2013 and the maximum were noted during 2013–2020. The ABUCI illustrates that the speed of urban growth is increasing from period to period and drastically increasing outward. It was also observed that by the latest period (2013 to 2020), the ABUCI value reached its maximum (> 120), especially from the distance of 10th to 24th in the study area. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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