Sustainable development versus urban sprawl: A Landsat imagery analysis of ecological impact in Savar Upazila, 2011–2022
This study investigates the ecological impacts of urban expansion in Savar Upazila, adjacent to Dhaka City, from 2011 to 2022. Utilizing Landsat (Level 2) imagery and the Time-weighted Dynamic Time Warping (TWDTW) classification method, the research assesses urban sprawl with high accuracy (98.87%,...
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Elsevier
2024-12-01
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| Series: | Case Studies in Chemical and Environmental Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666016424002135 |
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| author | Taslima Akter Sathe Syed Hafizur Rahman |
| author_facet | Taslima Akter Sathe Syed Hafizur Rahman |
| author_sort | Taslima Akter Sathe |
| collection | DOAJ |
| description | This study investigates the ecological impacts of urban expansion in Savar Upazila, adjacent to Dhaka City, from 2011 to 2022. Utilizing Landsat (Level 2) imagery and the Time-weighted Dynamic Time Warping (TWDTW) classification method, the research assesses urban sprawl with high accuracy (98.87%, 96.01%, and 96.53% for 2011, 2015, and 2022, respectively). Urban expansion was predominantly through extension, with a 9.19% increase in urban areas. The study also calculates Urban Hotspot Zones (UHs) and the Urban Thermal Field Variance Index (UTFVI) from Land Surface Temperature (LST) data, highlighting the growth of urban hotspots. The Partial Least Squares Regression (PLSR) reveals that development type affects the Urban Heat Island effect and extension is the most determining factor for ecological change. A local level analysis reveals that nearly all unions, except Shimulia and Pathalia, experienced a rise in areas with adverse ecological conditions, with Tetulihora, Amin Bazar, Ashulia, and nearby areas facing the most significant ecological deterioration due to urbanization (∼50%). The findings underscore a considerable decline in the region's ecological health due to urban expansion, urging policymakers to integrate stable ecological zones into urban planning for sustainable development. |
| format | Article |
| id | doaj-art-75c2ddcb9ddb4ef3b6e75e1023f523c4 |
| institution | Kabale University |
| issn | 2666-0164 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Chemical and Environmental Engineering |
| spelling | doaj-art-75c2ddcb9ddb4ef3b6e75e1023f523c42024-12-02T05:05:40ZengElsevierCase Studies in Chemical and Environmental Engineering2666-01642024-12-0110100819Sustainable development versus urban sprawl: A Landsat imagery analysis of ecological impact in Savar Upazila, 2011–2022Taslima Akter Sathe0Syed Hafizur Rahman1Department of Environmental Sciences, Jahangirnagar University, Dhaka, 1342, BangladeshCorresponding author.; Department of Environmental Sciences, Jahangirnagar University, Dhaka, 1342, BangladeshThis study investigates the ecological impacts of urban expansion in Savar Upazila, adjacent to Dhaka City, from 2011 to 2022. Utilizing Landsat (Level 2) imagery and the Time-weighted Dynamic Time Warping (TWDTW) classification method, the research assesses urban sprawl with high accuracy (98.87%, 96.01%, and 96.53% for 2011, 2015, and 2022, respectively). Urban expansion was predominantly through extension, with a 9.19% increase in urban areas. The study also calculates Urban Hotspot Zones (UHs) and the Urban Thermal Field Variance Index (UTFVI) from Land Surface Temperature (LST) data, highlighting the growth of urban hotspots. The Partial Least Squares Regression (PLSR) reveals that development type affects the Urban Heat Island effect and extension is the most determining factor for ecological change. A local level analysis reveals that nearly all unions, except Shimulia and Pathalia, experienced a rise in areas with adverse ecological conditions, with Tetulihora, Amin Bazar, Ashulia, and nearby areas facing the most significant ecological deterioration due to urbanization (∼50%). The findings underscore a considerable decline in the region's ecological health due to urban expansion, urging policymakers to integrate stable ecological zones into urban planning for sustainable development.http://www.sciencedirect.com/science/article/pii/S2666016424002135Urban sprawlTime-weighted dynamic time warping (TWDTW) classificationLandscape expansion index (LEI)Urban hotspots (UHs)Urban heat island (UHI)Urban thermal field variance index (UTFVI) |
| spellingShingle | Taslima Akter Sathe Syed Hafizur Rahman Sustainable development versus urban sprawl: A Landsat imagery analysis of ecological impact in Savar Upazila, 2011–2022 Case Studies in Chemical and Environmental Engineering Urban sprawl Time-weighted dynamic time warping (TWDTW) classification Landscape expansion index (LEI) Urban hotspots (UHs) Urban heat island (UHI) Urban thermal field variance index (UTFVI) |
| title | Sustainable development versus urban sprawl: A Landsat imagery analysis of ecological impact in Savar Upazila, 2011–2022 |
| title_full | Sustainable development versus urban sprawl: A Landsat imagery analysis of ecological impact in Savar Upazila, 2011–2022 |
| title_fullStr | Sustainable development versus urban sprawl: A Landsat imagery analysis of ecological impact in Savar Upazila, 2011–2022 |
| title_full_unstemmed | Sustainable development versus urban sprawl: A Landsat imagery analysis of ecological impact in Savar Upazila, 2011–2022 |
| title_short | Sustainable development versus urban sprawl: A Landsat imagery analysis of ecological impact in Savar Upazila, 2011–2022 |
| title_sort | sustainable development versus urban sprawl a landsat imagery analysis of ecological impact in savar upazila 2011 2022 |
| topic | Urban sprawl Time-weighted dynamic time warping (TWDTW) classification Landscape expansion index (LEI) Urban hotspots (UHs) Urban heat island (UHI) Urban thermal field variance index (UTFVI) |
| url | http://www.sciencedirect.com/science/article/pii/S2666016424002135 |
| work_keys_str_mv | AT taslimaaktersathe sustainabledevelopmentversusurbansprawlalandsatimageryanalysisofecologicalimpactinsavarupazila20112022 AT syedhafizurrahman sustainabledevelopmentversusurbansprawlalandsatimageryanalysisofecologicalimpactinsavarupazila20112022 |