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<p>This study assesses the spatial vulnerability of 184 cultural heritage sites across 19 coastal districts of Bangladesh through a GIS-based Analytical Hierarchy Process (AHP) and weighted overlay analysis. Six environmental parameters—Sea-Level Rise (SLR), Digital Elevation Model (DEM), Height Above Nearest Drainage (HAND), Surface Water Salinity (SWS), Surface Geology (SG), and Relative Humidity (RH)—were integrated with respective AHP-derived weights of 34%, 25%, 15%, 10%, 9%, and 7%. These parameters were selected for their direct relevance to coastal susceptibility and SLR. The results reveal that 67.39% of heritage sites fall under High Risk, 27.72% under Moderate Risk, 3.26% under Very High Risk, and only 1.63% under Low Risk, with no sites classified as Very Low Risk. Spatial distribution analysis highlights Satkhira, Khulna, and Bagerhat as major vulnerability hotspots. The findings emphasize the need for region-specific heritage conservation and adaptive management strategies to address escalating climate-induced risks along Bangladesh’s coastal zone.</p>

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Sea-level rise and spatial risk assessment of the coastal heritage sites in Bangladesh

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年11月4日

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  • Milon Bokshi,
  • Muhammed Shohrab Uddin,
  • Utso Soumyo Talukdar,
  • Nazmul Alam Ridoy

摘要

This study assesses the spatial vulnerability of 184 cultural heritage sites across 19 coastal districts of Bangladesh through a GIS-based Analytical Hierarchy Process (AHP) and weighted overlay analysis. Six environmental parameters—Sea-Level Rise (SLR), Digital Elevation Model (DEM), Height Above Nearest Drainage (HAND), Surface Water Salinity (SWS), Surface Geology (SG), and Relative Humidity (RH)—were integrated with respective AHP-derived weights of 34%, 25%, 15%, 10%, 9%, and 7%. These parameters were selected for their direct relevance to coastal susceptibility and SLR. The results reveal that 67.39% of heritage sites fall under High Risk, 27.72% under Moderate Risk, 3.26% under Very High Risk, and only 1.63% under Low Risk, with no sites classified as Very Low Risk. Spatial distribution analysis highlights Satkhira, Khulna, and Bagerhat as major vulnerability hotspots. The findings emphasize the need for region-specific heritage conservation and adaptive management strategies to address escalating climate-induced risks along Bangladesh’s coastal zone.