Adaptation Actions, Migration and Disaster Vulnerability of Bangladeshi Coastal Communities

By Edris Alam | Associate Professor - Chittagong University (CU) - Bangladesh | Jul 26, 2016
Adaptation Actions, Migration and Disaster Vulnerability of Bangladeshi Coastal Communities
Rebuilding embankment at Protap Nagar post-Cyclone Aila 5/09

Over the last 25 years, the world has seen a rise in the frequency of natural disasters in rich and poor countries alike. Today, there are more people at risk from natural hazards than ever before, with those in developing countries particularly at risk. This essay series is intended to explore measures that have been taken, and could be taken, in order to improve responses to the threat or occurrence of natural disasters in the MENA and Indo-Pacific regions. Read more ...


Bangladesh is considered one of the most vulnerable countries to climate variability and fluctuation and to extreme climatic events. Bangladeshi coastal communities are continuously adopting survival strategies in order to cope with changing climatic conditions. To offset the effects of extreme climatic events, vulnerable communities are often forced to migrate within the country. This essay discusses the impact of climate change on livelihoods and documents the current and future adaptation strategies of Bangladeshi coastal communities. The findings of the research conducted for this essay indicate that those who migrated to another area were able to secure new places to reside, but in locations that made them susceptible to other forms of disaster.[1]

Bangladeshi Coastal Communities at Risk

Coastal hazards (i.e., tropical cyclones and coastal erosion) are regarded as the greatest threats to human life and security in many countries. Bangladesh, which has a predominantly agricultural economy, a rapidly increasing population, and a slow economic growth rate, is currently ranked as one of the most prone to natural disasters.[2] Bangladesh has a coastline of over 710 km, joining its vast 47,201 km² of coastal plains with the Bay of Bengal.[3] The country has 64 administrative districts, 19 of which are considered coastal.[4] The coastal zone accounts for 32 percent of the total area of the country (Fig. 1), and 28 percent of the population lives in this zone. The landward limit of the coastal zone from the shore is between 30 and 195 km.

Since the earliest history of human settlement on the Bangladeshi coast, many people have chosen to situate their homes along unstable riverbanks or insecure offshore islands located in the northern end of the Bay of Bengal, where living conditions were affordable and livelihood opportunities plentiful. However, many of these offshore communities (e.g., Sandwip, Kutubdia, and Hatiya) have been subjected to frequent tropical cyclones (Fig. 2). In addition, the local communities on these remote islands have been severely affected by coastal erosion. To offset the impact of disasters, coastal people are continuously applying adaptation strategies.

Climate change adaptation refers to the adjustment of natural or human systems in response to actual or expected climatic stimuli or their effects in order to moderate harms or exploit beneficial opportunities.[5] Building the capacity to adapt to climate change implies that people must protect themselves against inevitable new and exogenous threats to their health and wellbeing. The U.N. Intergovernmental Panel on Climate Change notes that “adaptation to climate change takes place through adjustments to reduce vulnerability or enhance resilience in responses to observed or expected changes in climate and associated extreme weather events.”[6]

Figure 1. Location of Bangladeshi Coast and Selected Study Areas for This Essay

Bangladesh Confronts Climate-Related Disaster Risks

As a signatory to the United Nations Framework Convention on Climate Change (U.N.F.C.C.C.), Bangladesh developed a National Adaptation Program of Actions (NAPA) in 2005. The NAPA identified potential impacts of climate change as well as vulnerable sectors and geographic areas and proposed the most important and immediate adaptation actions.[7] Three years later, the Ministry of Environment and Forests published the Bangladesh Climate Change Strategy and Action Plan (B.C.C.S.A.P.), a “living document” that aims at developing long-term practical strategies to mitigate climate change risks.[8]

Non-governmental organizations (N.G.O.s), too, have been making significant contributions to promoting local residents’ health and sustainable livelihoods and mitigating disasters in Bangladesh, notably by significantly reducing waterborne diseases and promoting alternative livelihoods among the Bangladeshi coastal communities. For example, Caritas Bangladesh and its local partner Sushilon assisted local communities in southwestern Bangladesh in emptying and cleaning ponds, which are their residents’ sole sources of drinking water. The implementation of these programs has markedly decreased the incidence of diarrhea, dysentery, and skin diseases, which had been widespread among the local residents.

Figure 2Temporary Houses after Cyclone Sidr in 2007










Community-Led Adaptation Actions

Apart from the initiatives taken by the national authorities and by non-governmental organizations, coastal community members have taken it upon themselves to find ways to adapt to the heightened risk of climate-related natural disasters. The research conducted for this essay suggests that hazard-affected people have employed a variety of short-term and long-term actions to cope with disastrous conditions (Table 1). However, migration is one of the most common adaptation strategies following a disaster, primarily as a result of lost livelihood and the fear of the recurrence of another such calamity. Focus group discussions and field visits revealed that many coastal communities members—particularly those living on daily earnings who own neither land nor other property—had changed their residence from the offshore islands, which they had judged to be insecure, to areas on the mainland, which they had presumed to be more safe. (Fig. 3).[9]

Table 1: Community-led autonomous adaptation actions in Bangladesh

 Adaptation sectors


 Description of Adaptation




Changing rice crop farming to non-rice farming

Farming of different varieties of crops; cultivation of jute, wheat, plum, and different types of pulses[10]

Migrating to other countries for livelihood purposes

Migrating for jobs, mainly to Middle Eastern or other affordable countries (e.g., Malaysia etc.)

Increasing involvement in a variety of income sources

Earning money by wage labor, small business, construction works, and livestock farming)[11]

Selling land and taking loans

Selling land and taking loans (especially among poor households)[12]

Gender dimensions

Women are forced to take difficult jobs outside their comfort zone.[13]

Obtaining support from relatives and social networks

Support from relatives and social networks to offset losses and cope with devastation[14]

Human habitations




Raising the homestead and plinth

Low-lying coastal and island inhabitants often raise their homestead and plinth much higher than mainland people to mitigate the severe effects of coastal flooding[15]

Planting trees

Planting trees around the house to reduce the intensity of storm surge attacks[16]

Modifying houses

Building a special tent-type of shed for those who have lost their houses[17]

Changing house locations

Relocating from the coast of offshore islands to inner parts of the islands or to the adjacent mainland

Relocating to the adjacent mainland, mostly settling on unstable hillsides, uninhabited forest hills, coastal and river fringes, or cities in areas otherwise unused and publicly owned[18]


Adopting household coping strategies

Season-specific household-level strategies aimed at preventing sickness and disease from extreme temperatures and precipitation[19]

Figure 3. Location of Highly Vulnerable Areas to Tropical Cyclones










Note: The yellow solid arrows show the flow direction of disaster-induced migration from the offshore islands to the mainland of Bangladesh. CC=Chittagong City, NK=Noakhali.

Indeed, firsthand evidence from coastal Bangladesh—an area frequently affected by tropical cyclones, riverbanks, and coastal erosion—indicates that near-distance and far-distance out-migration is a continuous adaptation action. Some people migrating from the offshore islands form squatter settlements along the unstable hillside in and adjacent to Chittagong City (Fig. 4). Torrential rainfall in the deforested hills in Chittagong City in June 2007 caused landslides that affected 2,680 families and claimed 137 lives. An analysis of the settlement history of the victims of the landslides found that they had migrated from the offshore island areas to the unstable slopes in the Chittagong City hillside. Three-quarters of those who had migrated to these unstable areas had previously lost their houses as a result of the April 1991 cyclone or due to coastal erosion. Of those who perished in the 2007 landslides, the death toll for women and children far exceeded that of adult males. (Fig. 5).

Figure 4. Houses at the Base of the Hillside, Kusumbagh area, Chittagong City








The research suggests that the Bangladeshi coastal community is taking continuous adaptation actions to survive the slow onset and sudden changes of climate conditions. Changing the location of their houses from hazard-prone coastal areas to the mainland is one form of adaptation action the coastal community has undertaken. However, the ongoing research on disaster-induced migration indicates that migrants are often not able to obtain secure land but rather settle in an area that is, itself, prone to another form of disaster. Currently, Bangladesh Climate Change Strategy and Action Plan (BCCSAP) is also undertaking programs to mitigate and adaptively respond to climate change. It is less clear how effective the planned adaptation actions (i.e., those taken by the Government of Bangladesh, non-governmental organizations and other community-based organizations) will be on those autonomously adopted by the coastal communities. The current research is an initial step to explore all types of adaptation actions, disaster-induced migration, and vulnerability in the context of coastal Bangladesh. We are in the process of exploring the whole context of migration, disaster vulnerability and resilience in coastal Bangladesh. The fruits of this research will be shared with academics and research, the Government of Bangladesh, NGOs, and others working on disaster risk reduction, climate change adaptation and sustainable development sectors in Bangladesh and elsewhere in the world.

[1] To understand community-led autonomous adaptation strategies, data were collected from journal papers, reports, working papers of NGOs, local, governmental, and community-based organizations. To validate and supplement findings from secondary sources, field visits, observations, and focus group discussions (FGDs) were conducted among the Bangladeshi coastal communities.

[2] World Bank, “Natural Disaster Hotspots: A Global Risk Analysis,” Disaster Risk Management Series 5 (2005).

[3] Bangladesh Bureau of Statistics (B.B.S.), "Bangladesh Population Census-2011," Government of Bangladesh, 2011.

[4M.F. Karim and N. Mimura, “Impacts of Climate Change and Sea-level Rise on Cyclonic Storm Surge Floods in Bangladesh,” Global Environmental Change 18 (2008): 490– 500.


[5] M. Perry et al., “Climate Change 2007: Impacts Adaptation and Vulnerability: Contribution of the Working Group 11 to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change," 2007.

[6] “Climate Change 2001: The Scientific Basis. Contribution of Working Group I to the Third Assessment Report of the Intergovernmental Panel on Climate Change,” in Intergovernmental Panel on Climate Change (I.P.C.C.), eds. J.T. Houghton et al. (Cambridge and New York: Cambridge University Press, 2001).

[7] Bangladesh Climate Change Strategy and Action Plan (BCCSAP) 2008, Government of the People’s Republic of Bangladesh, Ministry of Environment and Forests, accessed June 5, 2016,

[8] The BCCSAP strategy identifies six thematic areas: food security, social protection and health; comprehensive disaster management; infrastructure; research and knowledge management; migration and low carbon development; and capacity building and institutional strengthening; BCCSAP 2008 explicitly acknowledged the need to periodically update and revise the strategy depending on new scientific findings. For the text of the first updated and revised version, see Bangladesh Climate Change Strategy and Action Plan (BCCSAP) 2009,Government of the People’s Republic of Bangladesh, Ministry of Environment and Forests, accessed June 5, 2016, S. Huq, “Lessons of Climate Change, Stories of Solutions. Bangladesh: Adaptation,” Bulletin of the Atomic Scientists 67 (2011): 56–59.

[9] V.T. Brook and B.K. Paul, “Public Response to a Tornado Disaster: The Case of Hoisington, Kansas,” Papers of the Applied Geography Conferences 26 (2003): 343–351.

[10] M.A.R. Sarkar, K. Alam, and J. Gow, “Assessing the Determinants of Rice Farmers’ Adaptation Strategies to Climate Change in Bangladesh,” International Journal of Climate Change Strategies and Management 5, 4 (2013): 382-403.

[11] J. Pouliotte, B. Smit, and L. Westerhoff, “Adaptation and Development: Livelihoods and Climate Change in Subarnabad, Bangladesh,” Climate and Development 1 (2009): 31-46.

[12] Pouliotte et al., "Adaptation and Development," 31-46; E. Alam, “Coping with Cyclone: An Occupational Group Perspective,” The Journal of Asiatic Society of Bangladesh (Humanities) 48, 2 (2003): 59-74; E. Alam, “Post Cyclone Adjustment Process: Basic Needs Perspective,” Oriental Geographer 47, 2 (2003): 47-60; E. Alam, “Post Cyclone Adjustment Process: The Case of Sandwip, Bangladesh,” (MSc thesis, Department of Geography and Environment, University of Dhaka, Bangladesh, 2002).

[13] M.A. Abedin, U. Habiba, and R. Shaw, “Gender and Climate Change: Impacts and Coping Mechanism of Women and Specially Vulnerable Groups,” in Climate Change Adaptation Actions in Bangladesh, eds. R. Shaw, F. Mallick and A. Rahman (Tokyo: Springer, 2013).

[14] E. Alam, “Post Cyclone Adjustment Process: The Case of Sandwip." 

[15] E. Alam, “Coping with Cyclone"; E. Alam, “Post Cyclone Adjustment Process: Basic Needs Perspective”; E. Alam, “Post Cyclone Adjustment Process: The Case of Sandwip."

[16] E. Alam, “Post Cyclone Adjustment Process: Basic Needs Perspective,”

[17] M.A. Haque et al., “Health Coping Strategies of the People Vulnerable to Climate Change in a Resource-poor Rural Setting in Bangladesh,” BMC Public Health 13, 565 (2013): 1-11.

[18] E. Alam, “Post Cyclone Adjustment Process: The Case of Sandwip.”

[19] M.A. Haque et al., “Health Coping Strategies of the People Vulnerable to Climate Change in a Resource-poor Rural Setting in Bangladesh.”