Abstract
Riverbank erosion often compels affected people to migrate from their respective communities. However, there are still many who do not leave the affected region. The research focuses on this particular group of non-migrant populations living in the erosion-prone Ramdaspur village of Bhola district in Bangladesh, to explore how erosion influences (non-)migration decision. We interviewed households from the study village. More than half the respondents reported that, even though they are continuously being hit by erosion, they are unwilling to move away because of the community support they receive from staying in the village. The rest of the respondents who choose to remain, do so because of financial reasons. Therefore, this study proposes a need for a holistic approach in future adaptation planning for the riverbank erosion-prone areas of Bangladesh to support the non-migrants in the communities.
Highlights
Riverbank erosion is a natural slow-onset hazard that upsets the balance of many fluvial and coastal environments of the world by wearing away the bank materials from a river’s banks
Erosion and accretion processes vary in a decade scale along the main rivers of Bangladesh, which can be influenced by anthropogenic activities (Hasan et al 2018)
Tidal ranges and wave action are the main reasons for erosion at the front of the Bay of Bengal in coastal Bangladesh
Summary
Riverbank erosion is a natural slow-onset hazard that upsets the balance of many fluvial and coastal environments of the world by wearing away the bank materials from a river’s banks This geomorphic process results in the shorelines’ movement from. In the past 5000 years, the Ganges Delta, with its tidal network, has formed three different prograding deltaic systems, while migrating to the east side (Allison et al 2003) This delta plain’s total surface area exceeds a hundred thousand square kilometres (Naus et al 2017; Akter et al 2015), with a width of approximately 350 kms along the coastline (Naus et al 2017). In contrast to the other deltas of the world, the Ganges–Brahmaputra Delta poses a moderate risk when considering coastal erosion, as the Sundarbans in the west protects the delta from erosion (Shamsuddoha and Chowdhury (2007))
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