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The south-western delta of Bangladesh, a critical component of the Ganges-Brahmaputra-Meghna (GBM) river system, is progressively transitioning into a moribund landscape. This transformation is driven by diminishing sediment inflows, saline water intrusion, river network siltation, and widespread land subsidence. These biophysical challenges are further exacerbated by the impacts of climate change, including sea-level rise, shifting monsoonal dynamics, and increased frequency and intensity of cyclones. This study reviews the underlying drivers of deltaic degradation, assesses the socio-economic and ecological consequences, and critically reviews both existing and emerging adaptive management responses. Particular focus is given to the Bangladesh Delta Plan 2100 (BDP2100) and its application of Adaptive Delta Management (ADM) frameworks and Nature-Based Solutions (NBS) to foster resilient and adaptive development strategies. The paper advocates for integrated, inclusive, and climate-smart delta governance mechanisms to restore ecological functionality, safeguard livelihoods, and ensure a safe, habitable, and productive deltaic future in Bangladesh

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Moribund Delta Management in a Changing Climate: The Case of South-Western Delta in Bangladesh

  • 会议论文

  • 发表日期：

    2026年

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  • A. H. M. Kausher,
  • Ataur Rahman,
  • Monisha Anindita

摘要

The south-western delta of Bangladesh, a critical component of the Ganges-Brahmaputra-Meghna (GBM) river system, is progressively transitioning into a moribund landscape. This transformation is driven by diminishing sediment inflows, saline water intrusion, river network siltation, and widespread land subsidence. These biophysical challenges are further exacerbated by the impacts of climate change, including sea-level rise, shifting monsoonal dynamics, and increased frequency and intensity of cyclones. This study reviews the underlying drivers of deltaic degradation, assesses the socio-economic and ecological consequences, and critically reviews both existing and emerging adaptive management responses. Particular focus is given to the Bangladesh Delta Plan 2100 (BDP2100) and its application of Adaptive Delta Management (ADM) frameworks and Nature-Based Solutions (NBS) to foster resilient and adaptive development strategies. The paper advocates for integrated, inclusive, and climate-smart delta governance mechanisms to restore ecological functionality, safeguard livelihoods, and ensure a safe, habitable, and productive deltaic future in Bangladesh