Spatiotemporal dynamics of urban landscape in Asansol municipal corporation, West Bengal, India: a geospatial analysis
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Spatiotemporal dynamics of urban landscape in Asansol municipal corporation, West Bengal, India: a geospatial analysis Biswajit Maity . Suraj Kumar Mallick . Somnath Rudra
Accepted: 8 October 2020 Ó Springer Nature B.V. 2020
Abstract The spatiotemporal characteristics and driving factors of regional land use have a pivotal role in suitable and sustainable urban development. In this study various multi-temporal satellite imageries i.e. LANDSAT TM (1991, 2008) and OLI (2018) were used to analyse the land use/land cover (LULC) change, land transformation, urban expansion, growth direction, and urban sprawl to understand the nature of built-up area growth in Asansol Municipal Corporation (AMC), West Bengal. Seven categories of land class have been categorized using the Gaussian maximum likelihood classifier algorithm and resulted in values putting into the transitional probability matrix to show the change detection of each land class. The annual built-up area intensity index and directional expansion of the built-up area during 1991–2018 have been calculated to show the changing rate of the built-up area with direction. The result indicates that the built-up area has drastically increased from 12.54 to 33.87% from 1991 to 2018 expanding towards the southwest direction and other land classes have a decreasing trend. Finally, this study concludes that the least amount of vegetation B. Maity S. K. Mallick Department of Geography, Vidyasagar University, Midnapore, West Bengal, India S. Rudra (&) Department of Geography, Vidyasagar University, Midnapore, West Bengal, India e-mail: [email protected]
cover and industry-based urban expansion of this urban area might be a threat to become an urban heat island in the future. So, urban planners and researchers should have to take proper planning for urban expansion and try to increase urban green infrastructure for a sustainable urban future. Keywords Urban landscape LULC change Green infrastructure Geospatial techniques Built-up area intensity index Urban sprawl
Introduction The urban landscape is an area of earth’s surface characterized by some cultural scenery that is roads and transport-related land use, mineral working and quarries, and continuous built-up sites in association with the physical environment. Over recent decades, the continuous, rapid, unplanned and unsystematic transformation of the rural physical environment to urban cultural environment has occurred especially in developing nation through urbanization (Mundia and Aniya 2006; Jat et al. 2008; Dewan and Yamaguchi 2009; Jie et al. 2011; Patra et al 2018). The urban area shares more than half of the world population and it will be increased to 66% within 2050 and mostly concentrated over the African and Asian countries (UN report 2014). The increase of human activities in
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the urban area has led to a drastic change in land use practice within and outside the urban area (Jafar et al. 2015) having marked effect on the ecosystem
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