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<p>Mapping, measuring and monitoring urban built-up space expansion as well as identifying the drivers of land cover change, are critical in developing plans and policies for effective and sustainable urban land use management. Current study is basically based on remote sensing and GIS based measurement of urban built-up growth in Durgapur Municipal Corporation (DMC), West Bengal for achieving SDG 11 target 11.3 (Inclusive and sustainable urbanization) at micro scale. The Graphical technique (Density Mapping), Shannon’s entropy, and the Chi-square statistics were employed to quantify urban built-up growth. Built-up density of entire DMC was divided into a total of five groups. These are–Very Low (0.15), Low (0.15–0.35), Medium (0.36–0.56), High (0.57–0.77), and Very High (&gt; 0.77). From 1991 to 2021, the number of wards falling under the Very Low (0.15) category significantly dropped. Similarly, Low (0.15–0.35) category also has been in same way. However, High (0.57–0.77) and Very High (&gt; 0.77) categories are gradually increased throughout the study period. The findings reveal a fast increase in built-up space in DMC from 1991 to 2021. The results state that urban growth of DMC is sprawling in nature with an increasing trend. The Shannon’s entropy value gradually increased from 0.89 (1991) to 0.95 in 2001, 0.96 in 2011 and 0.98 in 2021. And, it is observed from Chi-square statistics that during 1991–2001 the degree of freedom (df) was high in SSE, followed by SSW zones, low in NNW and SEE zones. In 2001–2011, high degree of freedom was noticed in SEE zone followed by SSW, NEE and SWW zones and during 2011–2021, high df observed in SEE, SSE, and NEE zones of DMC. Furthermore, to evaluate the environmental condition of Durgapur, decadal LULC-wise land surface temperature (LST) analysis was performed, it is suggested that this region serve as transition zones between the rural-urban fringe and city centers, demonstrating how urban growth can propagate thermal stress beyond cities. The results obtained from this work would be helpful for the urban planners, policy-makers and in developing strategies to encourage planned urban growth and sustainable urban habitat.</p>

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Multi-method approaches for measurement of Urban Built-up growth and its environmental implications in an industrial city of Eastern India: critical steps toward sustainable urban planning

  • 期刊论文

  • 发表日期：

    2026年2月25日

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  • Sribas Patra,
  • Kapil Kumar Gavsker,
  • Mallikarjun Mishra

摘要

Mapping, measuring and monitoring urban built-up space expansion as well as identifying the drivers of land cover change, are critical in developing plans and policies for effective and sustainable urban land use management. Current study is basically based on remote sensing and GIS based measurement of urban built-up growth in Durgapur Municipal Corporation (DMC), West Bengal for achieving SDG 11 target 11.3 (Inclusive and sustainable urbanization) at micro scale. The Graphical technique (Density Mapping), Shannon’s entropy, and the Chi-square statistics were employed to quantify urban built-up growth. Built-up density of entire DMC was divided into a total of five groups. These are–Very Low (0.15), Low (0.15–0.35), Medium (0.36–0.56), High (0.57–0.77), and Very High (> 0.77). From 1991 to 2021, the number of wards falling under the Very Low (0.15) category significantly dropped. Similarly, Low (0.15–0.35) category also has been in same way. However, High (0.57–0.77) and Very High (> 0.77) categories are gradually increased throughout the study period. The findings reveal a fast increase in built-up space in DMC from 1991 to 2021. The results state that urban growth of DMC is sprawling in nature with an increasing trend. The Shannon’s entropy value gradually increased from 0.89 (1991) to 0.95 in 2001, 0.96 in 2011 and 0.98 in 2021. And, it is observed from Chi-square statistics that during 1991–2001 the degree of freedom (df) was high in SSE, followed by SSW zones, low in NNW and SEE zones. In 2001–2011, high degree of freedom was noticed in SEE zone followed by SSW, NEE and SWW zones and during 2011–2021, high df observed in SEE, SSE, and NEE zones of DMC. Furthermore, to evaluate the environmental condition of Durgapur, decadal LULC-wise land surface temperature (LST) analysis was performed, it is suggested that this region serve as transition zones between the rural-urban fringe and city centers, demonstrating how urban growth can propagate thermal stress beyond cities. The results obtained from this work would be helpful for the urban planners, policy-makers and in developing strategies to encourage planned urban growth and sustainable urban habitat.