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Urban areas, especially in the coastal region of Bangladesh, face environmental degradation due to rapid urbanization, uncontrolled socio-economic activities and experiencing the adverse impacts of climate change. Nature-based solutions (NbS) as options for restoring, preserving, maintaining and elevating natural features or systems are becoming popular for reducing vulnerabilities caused either by natural hazards or human-induced activities. With this understanding, this study aims to explore the need of practicing NbS by studying the condition of a tidal canal (known as Thakurani Khal) and its peripheral areas of Mongla Port Municipality, a coastal and seaport town in Bangladesh.

This case study-based research uses multiple inquiries, including focus group discussions, pair-wise comparison, observation, GIS-based mapping, key informant interviews and secondary climate data review, to understand the spatial development of the area and community reactions to the changes in the urban environment.

The natural water flow of this canal is controlled by sluice gates that indirectly allowed the dweller to encroach its lands and convert the canal into a solid waste dumping area. These human-induced activities as well as the climate change-induced events (i.e. extreme heat, intensive and irregular rainfall, increased number of cyclones, etc.) have made the adjacent areas prone to waterlogging and drainage congestion. In this context, the revival of the original natural quality of the canal has been identified as an alternative to ensuring an adaptive urban environment.

This research highlights the importance of practicing NbS for developing urban resilience in the context of climate change.

In an urban environment, different types of actors (individuals, households, community groups, institutions, governmental organizations, nongovernmental organizations (NGO), community-based organizations (CBO) and public and private organizations, etc.) play critical roles in enhancing urban resilience to adapt to the impacts of climate change. To identify and prioritize aspects of climate resilience planning, this study aims to examine the potential impacts of climate change on diverse urban systems and evaluate the capacities of various actors to adapt to climatic stress.

This research selects Mongla, a coastal as well as port town in south-western Bangladesh that faces climate risks including frequent cyclones, storm surges and salinity intrusion due to sea-level and temperature rise, as reported in the National Climate Vulnerability Index 2018. This research uses the methodology proposed by ICLEI South Asia’s Climate Resilient Cities Action Plan and accesses different urban actors’ adaptive capacity for contributing to enhancing climate resilience based on three broad characteristics: the capacity to organize and respond, availability of resources and access to information. The cumulative scores of these characteristics aid in determining the climate adaptive capacity of each urban actor.

The identified 53 actors are grouped into four categories: government (local and national); international/local NGOs, CBOs and associations; community representatives and private sectors and groups and individuals. The group of NGOs, CBOs and associations has a higher overall adaptive potential than all other actor groups, according to the study. When it comes to practicing adaptive capacity, government institutions are in the second-highest position. But, the Khulna development authority, the government agency that is in charge of overseeing all forms of urban development, scored poorly on all fragile urban systems. However, the performance of the fourth group of urban actors is very subpar when it comes to adapting to climatic stress, which emphasizes the need for focused interventions.

Variations in adaptive capacities to climate change across different actors are particularly useful for targeting actors with lower levels of climate adaptive capacities in Mongla town.

This paper particularly addresses the research gap in assessing the adapting capacity of urban actors in Mongla port-town. Policymakers and practitioners can create and carry out targeted interventions that address the particular needs and concerns of vulnerable actors by making use of the insights obtained from this kind of study, thereby assisting in the development of climate resilience in any urban area.

Mud architecture as one of the expressions of vernacular architecture illustrates the success of indigenous knowledge of traditional communities. Due to the pressure of industrialization, urbanization and globalization, the trend of using non-traditional measures guided by the Western-Euro-centric knowledge and technologies considers the traditional practices as expressions of backward past, under-development and poverty. Though mud as a building material is usually assumed as a fragile and ephemeral material that cannot survive against natural hazards, the surviving traditional mud buildings are needed to be investigated to know their performances during and after different types of natural hazard incidents.

This paper intends to study the available cases of mud architecture of Chattogram, Bangladesh to trace the history of their survival despite of experiencing multiple natural hazards and to understand their status and prospect of resisting hazards. Three individual homesteads are chosen as cases for conducting physical survey as well as engaging inhabitants and local masons of the locality in semi-structured interviews in a story telling mode to know the construction process and histories of experiencing natural hazards. Available literatures are reviewed, and experts are interviewed to understand the causes of their performances and possible ways to improve the quality.

Collected information on mud architecture demonstrates their quality of surviving against many natural challenges and this hazard-resilient quality can be enhanced through using contemporary building technologies and materials, promising to co-exist with the global trend.

This study as an attempt to reinvent the vernacular architectural heritage endorses the need of appreciating indigenous knowledge for enhancing community resilience against natural hazards.

Enhancing community flood resilience is a critical aspect of flood risk management that requires a systematic process of capacity building through incorporating mitigation measures. The inhabitants of South Rishipara, a riverside settlement of Bangladesh, are accommodating themselves in a flood-prone location through modifying their built environment. The purpose of this study is to conduct a detailed investigation regarding the built environment development and find out roles of different actors and contributing factors for enhancing community flood resilience.

This case study-based post-positivist research uses multiple lines of inquiries, which include focus group discussions, transect walks, in-depth semi-structured interviews, pair-wise comparisons and a questionnaire survey, mostly in a participatory appraisal manner to obtain data about community experiences and perceptions.

About 66.7 per cent of respondents identified themselves as severely affected by flood before the recent development with increased elevation of land, flood protection walls, reclaimed land from the river, underground drainage system, a new layout of plots and houses of better quality. In the post-development situation, not a single respondent identified him/ her in that condition. “Coordination and cooperation among GOs, NGOs and donor agency” (GO: governmental organization; NGO: nongovernmental organization) and “awareness about the flood vulnerability” were identified as key factors and the NGO was identified as the key actor for enhancing community flood resilience by the survey participants.

This research, through exploring the nuanced relationship between built environment development and community resilience, will contribute to address uncertainties associated with community capacities to respond to risks.