Urbanization Sustainability and Society

Purpose This study aims to assess the environmental implications of slaughterhouses within residential areas of Ede, Nigeria. The effects on the health of the residents and the physical environment were examined. It provides an insight into the levels of damages done by this facility on the nearby residents and the implications on the quality of life. Design/methodology/approach The research was based on the 16 slaughterhouses identified in the study area, which formed the sample population. From these, eight (representing 50%) were randomly chosen for survey. To determine the suitability of this facility in the current locations and its impacts on nearby residents and the immediate environment, occupants of residential structures within a range of the selected slaughterhouses were considered for investigation. Data collected were analysed using descriptive statistics. Findings The study shows that most slaughterhouses existed earlier than many residential structures. Their owners are mainly aged people with low levels of education and income. Wastes generated from the slaughterhouses dominated by organic content were poorly handled. The results of the soil tests conducted around the slaughterhouses show that acidic content exceeds the 7Ph threshold recommended by the World Health Organisation. Most residents living in buildings within a close range are observed to have experienced high disturbances from environmental pollution, which is suspected to result to various degrees of health challenges. Originality/value The paper builds on revealing the implications of operating slaughterhouses within residential area which is common practices in most developing countries. The effects of these operations on the environment and wellbeing of the inhabitants were revealed.

Purpose Urbanization in Sub-Saharan Africa (SSA) has seen rapid growth in recent decades, resulting in significant changes to the region’s landscape and ecosystems, including wetlands. This study aims to examine the causes and effects of urbanization on wetlands. This study lays down the need to intervene to protect and restore wetlands in SSA. Design/methodology/approach The methodology used was a systematic literature review, supported by the VOSviewer software and the preferred reporting items for systematic reviews criteria, with data analyzed using abductive reasoning and content analysis. Findings This study found that a complex web of factors reflecting regional and global trends propels urbanization in Sub-Saharan Africa. Urbanization is driven by population growth, economic development, infrastructure development and migration, leading to significant changes in the region’s ecosystems. The key effects include biodiversity loss, flooding and altered hydrology, water quality degradation and loss of livelihood. The study identifies sprawling urbanization, densification, informal settlement, fragmented urbanization and planned urban expansion as patterns of urbanization affecting wetlands. Practical implications This study offers practical recommendations for policymakers, planners and local communities to ensure long-term urban sustainability while conserving wetland ecosystems in SSA. Thus, there is a need for continued cooperation, technology and discovery sharing, and cooperative research funding initiatives with the global community. It also commends implementing green infrastructure, like artificial wetlands, to mitigate the adverse environmental effects and promote sustainable development. Originality/value This study used VOSviewer software visualization to uncover structural trends and research frontiers, focusing on wetland conservation in the context of urban areas in SSA, where rapid urbanization adds to wetland degradation.

Purpose In the era of rapid urbanization, fostering an inclusive housing market system for most low-income urban residents remains a challenge in Sub-Saharan African countries. This study aims to investigate the realities of housing markets in Hawassa City, Ethiopia, and interrogate whether these markets foster social inclusion for households at the lower end of the market in the post-1990s. Design/methodology/approach The study used a mixed research approach. Primary data was generated using household surveys and key-informant interviews administered to residents and officers. The study also reviewed the municipality’s policy documents and reports. Data were analyzed using descriptive statistics and theme-based qualitative interpretation. Findings Hawassa City exhibited formal and informal housing market patterns guided by national, regional and city-wide policy and regulatory frameworks. Nevertheless, trends in these markets do not seem to capture the realities of residents’ ability to pay for housing and demonstrate social exclusions. The yawning gaps between demand and supply of housing largely necessitated the black market and the subsequent commercialization of housing by visible and invisible actors. Research limitations/implications The study suggests further research on ethnographic understanding of the visible and invisible actors operating in the housing markets and adverse impacts on peri-urban farmers. The present study did not address rental housing markets adequately, and this could be open for further research. Practical implications The study has implications for revisiting housing policy-making, especially for understanding the policy and practical gaps and thus promoting a socially inclusive housing market system targeting low-income people. Originality/value The study provides a comprehensive analysis of housing markets in Hawassa City through the lens of operational values of social inclusivity (Elsinga et al. , 2020). The findings provide baseline data on policy and implementation gaps for promoting a socially inclusive housing market system, especially for low-income people. In this regard, the contribution is empirical. In addition, this manuscript renders a conceptual framework for analyzing housing markets in other similar contexts of sub-Saharan Africa.

Purpose Environmental emissions are increasing in the urban areas. Much of the emissions arise from public procurement activities given that public sector firms are major customers to many supplying firms. Given the tremendous contribution, this study aims to examine the adoption of environmentally friendly urban freight logistics practices among public sector firms through assessing the impact of urban environmental governance, government environmental communication and organizational environmental governance. Design/methodology/approach Data for the study were collected in a single time period from central procuring and disposing entities (public sector firms) in the urban areas. A sample of 105 public sector firms in were used. One procurement officer and one member of the contracts committee were the key informants in the study. AMOS SPSS version 26 was used to obtain the results for the structural model and measurement model, respectively. Findings The findings indicate that the adoption of environmentally friendly urban freight logistics practices among public sector firms is significantly influenced by government environmental communication, organizational environmental governance and urban environmental governance. Urban environmental governance significantly influences organizational environmental governance. Urban environmental governance fully mediates the relationship between government environmental communication and public sector firms’ adoption of environmentally friendly urban freight logistics practices. Also, urban environmental governance and organizational environmental governance mediate the relationship between government environmental communication and adoption of environmentally friendly urban freight logistics practices. Research limitations/implications This study examined the adoption of environmentally friendly urban freight logistics practices among public sector firms. However, the study was conducted in a public procurement setting rather than a private sector procurement setting. Also, the study examined the impact of government environmental communication on public sector firms’ adoption of environmentally friendly urban freight logistics practices ignoring the impact of internal communications made within the public sector firms on environmental issues. Originality/value This study examined the adoption of environmentally friendly urban freight logistics practices among public sector firms. Freight logistics in public sector procurement has not been given significant attention in earlier research. Emphasis is placed on sustainable public sector procurement ignoring other aspects that would help curb environmental emissions that may arise during and after the delivery of public procurement requirements.

Purpose This study aims to explore and analyse building energy performance (BEP) policies and regulations worldwide. It presents a perspective on the status quo of policy packages for the built environment. This study spans the six years between 2018 and 2023 to give a broad overview of the BEP policy landscape. Design/methodology/approach An exploratory search of secondary sources was conducted within a six-year timeline. The six-year period enabled the creation of a pre- and post-COVID baseline through which comparisons of policy trends could be made. The International Energy Agency (IEA) and Scopus databases were the principal sources of relevant literature. A data extraction tool and four research questions were used to ensure the relevance of the selected sources. The primary limitation of this work is that the chosen time frame limited the number of policies and regulations investigated. Findings At the time of writing this paper, 272 were retrieved from the IEA database, together with 65 eligible studies from the Scopus database. After data analysis, it was established that most national policies target renewable energy installations, heating and cooling of buildings, net-zero ambitions, fiscal instruments and long-term national interests. However, most studies focus on BEP policy assessment, renewable energy and the social impact of policies. Furthermore, four main findings emerged from the analysed data. These point to fragmentation of policy goals across the BEP landscape, institutional influence in energy policy formulation and little consideration of socio-economic-environmental impacts within BEP policy packages. Originality/value This research contributes to the discourse on BEP policies and regulations by bringing BEP policy to the forefront. It highlights a fragmented BEP policy landscape and advocates for improved collaboration between academia, the private sector and policymakers to encourage accountability for the life-cycle energy performance of buildings and their services within policy frameworks. Additionally, this research identifies a need for integrative and holistic policy solutions.

Purpose Research on the living conditions of slum dwellers in the inner cities of developing countries has received much attention. Nevertheless, there is little empirical research on the influence of personal attributes on the poor environmental condition of the slum area. This study aims to examine the relationship between the socio-economic characteristics and the physical condition of the slum environment in the inner city of Ibadan, Nigeria. Design/methodology/approach Data was collected through the use of questionnaire administration from a household survey of 491 slum dwellers. Systematic random sampling was used in the selection of the respondents. The study used descriptive, factor and multiple regression to analyse the data collected. Findings The study used descriptive, factor and multiple regression to analyse the data collected. The study reveals an interplay between various socio-economic factors and environmental conditions. The results show that out of ten (10) socio economic variables that were submitted in the regression model, only eight (8) of these variables such as income, household size, occupation, level of education, age, marital status, year of residency and nativity were significant. Originality/value The study concluded that despite the fact that the condition of the slum environment is a product of multiple interrelated factors, personal attributes also contribute to the poor environmental condition of the slum area. The study recommended that improving the socio-economic conditions of slum dwellers would lead to improved environmental conditions.

Purpose Urban backyards hold both aesthetic and practical value, offering significant potential for native biodiversity conservation within cities. Homeowners, as the primary managers of these spaces, play a crucial role in determining whether their backyards contribute to ecological sustainability by planting native species. This study aims to investigate how New Zealand homeowners’ attitudes, behaviours and motivations influence their engagement with native planting, and identifies effective strategies to encourage this practice. Design/methodology/approach This study used an online survey targeting a diverse sample of New Zealand homeowners, designed to assess their perceptions, motivations and barriers related to native planting. Correlational and regression analyses were used to identify the factors most strongly associated with the likelihood of increasing native planting in urban backyards. Findings Homeowners with healthier backyards, greater native plant coverage and those who spend 6–8 h per week maintaining native plants exhibit greater satisfaction with their backyards. Key motivations for native planting include attracting wildlife, enhancing aesthetics and contributing to ecological sustainability. Younger homeowners, Maori and Pacific communities and those dissatisfied with their current backyards are particularly inclined to increase native planting. Targeted financial and educational initiatives could significantly boost native plant coverage in urban backyards, contributing to both homeowner satisfaction and broader environmental goals. Originality/value While the role of urban backyards in biodiversity conservation is recognized, there is limited understanding of how homeowners can be motivated to enhance native plant coverage. This study addresses this gap by examining the factors that drive or hinder native planting among New Zealand homeowners.

Purpose-The presence of green spaces plays a vital role in promoting urban sustainability. Urban green parks (UGPs) help create sustainable cities while providing fundamental ecological functions. However, rapid urbanization has destroyed crucial green areas in Ranchi City, endangering inhabitants' health. This study aims to locate current UGPs and predict future UGP sites in Ranchi City, Jharkhand. Design/methodology/approach-It uses geographic information system (GIS) and analytical hierarchical process (AHP) to evaluate potential UGP sites. It involves the active participation of urban communities to ensure that the UGPs are designed to meet dweller's needs. The site suitability assessment is based on several parameters, including the normalized difference vegetation index (NDVI), land use and land cover (LULC), population distribution, PM 2.5 levels and the Urban Heat Island (UHI) effect. The integration of these factors enables an evaluation of potential UGP's sites. Findings-The findings of this research reveal that 54.39% of the evaluated areas are unsuitable, 15.55% are less suitable, 12.76% are moderately suitable, 11.52% are highly suitable and 5.78% are very highly suitable for UGPs site selection. These results emphasize that the middle and outer regions of Ranchi City are the most favorable locations for establishing UGPs. The NDVI is the most important element in UGP site appropriateness, followed by LULC, population distribution, PM 2.5 levels and the UHI effect. Originality/value-This study improves the process of integrating AHP and GIS, and UGPs site selection maps help urban planners and decision-makers make better choices for Ranchi City's sustainability and greenness. The authors appreciate the anonymous reviewers' valuable comments and suggestions for refining the quality of the manuscript.

Purpose For over 25 years, the United States Green Building Council (USGBC) has significantly influenced the US sustainable construction through its leadership in energy and environmental design (LEED) certification program. This study aims to delve into how Baton Rouge, Louisiana, fares in green building adoption relative to other US capital cities and regions. Design/methodology/approach The study leverages statistical and geospatial analyses of data sourced from the USGBC, among other databases. It scrutinizes Baton Rouge’s LEED criteria performance using the mean percent weighted criteria to pinpoint the LEED criteria most readily achieved. Moreover, unique metrics, such as the certified green building per capita (CGBC), were formulated to facilitate a comparative analysis of green building adoption across various regions. Findings Baton Rouge’s CGBC stands at 0.31% (C+), markedly trailing behind the frontrunner, Santa Fe, New Mexico, leading at 3.89% (A+) and in LEED building per capita too. Despite the notable concentration of certified green buildings (CGBs) within Baton Rouge, the city’s green building development appears to be in its infancy. Innovation and design was identified as the most attainable LEED benchmark in Baton Rouge. Additionally, socioeconomic factors, including education and income per capita, were associated with a mild to moderate positive correlation (0.25 = r = 0.36) with the adoption of green building practices across the capitals, while sociocultural infrastructure exhibited a strong positive correlation ( r = 0.99). Practical implications This study is beneficial to policymakers, urban planners and developers for sustainable urban development and a reference point for subsequent postoccupancy evaluations of CGBs in Baton Rouge and beyond. Originality/value This study pioneers the comprehensive analysis of green building adoption rates and probable influencing factors in capital cities in the contiguous US using distinct metrics.

Purpose This paper aims to assess the current and future dynamics of land cover transitions and analyze the vegetation conditions in Abuja city since its establishment as the capital of Nigeria in 1991. Design/methodology/approach A random forest classifier embedded in the Google Earth Engine platform was used to classify Landsat imagery for the years 1990, 2001, 2014 and 2020. A post-classification comparison was used to detect the dynamics of land cover transitions. A hybrid simulation model that comprised cellular automata and Markovian was used to model the probable scenario of land cover changes for 2050. The trend of Normalized Difference Vegetation Index was examined using Mann–Kendall and Theil Sen’s from 2014 to 2022. Nighttime band data from the National Oceanic and Atmospheric Administration were obtained to analyze the trend of urbanization from 2014 to 2022. Findings The findings show that built-up areas increased by 40%, while vegetation, bare land and agricultural land decreased by 27%, 7% and 8%, respectively. Vegetation had the highest declining rate at 3.15% per annum. Built-up areas are expected to increase by 17.1% between 2020 and 2050 in contrast with other land cover. The proportion of areas with moderate vegetation improvement is estimated to be 15.10%, while the proportion of areas with no significant change was 38.10%. The overall proportion of degraded areas stands at 46.8% due to urbanization. Originality/value The findings provide a comprehensive insight into the dynamics of land cover transitions and vegetation variability induced by rapid urbanization in Abuja city, Nigeria. In addition, the findings provide valuable insights for policymakers and urban planners to develop a sustainable land use policy that promotes inclusivity, safety and resilience.

Purpose-The purpose of this study is to investigate and analyse the potential of existing buildings in the UK to contribute to the net-zero emissions target. Specifically, it aims to address the significant emissions from building fabrics which pose a threat to achieving these targets if not properly addressed. Design/methodology/approach-The study, based on a literature review and ten (10) case studies, explored five investigative approaches for evaluating building fabric: thermal imaging, in situ U-value testing, airtightness testing, energy assessment and condensation risk analysis. Cross-case analysis was used to evaluate both case studies using each approach. These methodologies were pivotal in assessing buildings' existing condition and energy consumption and contributing to the UK's net-zero ambitions. Findings-Findings reveal that incorporating the earlier approaches into the building fabric showed great benefits. Significant temperature regulation issues were identified, energy consumption decreased by 15% after improvements, poor insulation and artistry quality affected the U-values of buildings. Implementing retrofits such as solar panels, air vents, insulation, heat recovery and air-sourced heat pumps significantly improved thermal performance while reducing energy consumption. Pulse technology proved effective in measuring airtightness, even in extremely airtight houses, and high airflow and moisture management were essential in preserving historic building fabric. Originality/value-The research stresses the need to understand investigative approaches' strengths, limitations and synergies for cost-effective energy performance strategies. It emphasizes the urgency of eliminating carbon dioxide (CO 2) and greenhouse gas emissions to combat global warming and meet the 1.5°C threshold.

Purpose The purpose of this study was to investigate the impact of Corona virus disease on the perceived values of urban green landscapes in a developing country setting. To achieve this objective, the author investigated changes in the preferences for urban green space services among city residents who use nature areas for recreation. Design/methodology/approach This study applied the best–worst scaling technique to elicit changes in the preferences for ecosystem services from urban recreational sites in Malawi. The study also used a fractional logit model to examine factors that motivate visitors’ willingness to donate/contribute to improve the quality of nature’s recreational services. Findings This study finds that the COVID-19 pandemic changed visitors’ perceptions of urban woodlands, but leisure/recreation remained the most important service with or without the Corona virus outbreak. However, the perceived value of air pollution control and cultural/religious functions gained more prominence (+3%), whereas biodiversity conservation became less prominent (−2%) during the pandemic period. The mean willingness to pay (WTP) was estimated to be US$28.73, and WTP is positively influenced by education, income status and the user’s satisfaction with the recreation site. Originality/value The study substantiated the impact of Corona virus disease on the perceived values of urban green landscapes, using Malawi as a case study. This was demonstrated through the changes in preferences for urban green space services among city residents who use nature areas for recreation.

Purpose Productivity increase is correlated with profitability, sustainability and competitiveness of the construction firms. Recent studies reveal that the primary causes of productivity decline are poor usage of scientific and technological advances, ineffective supervision strategies and poor apprenticeship facilities/opportunities. Accordingly, the purpose of this study was to evaluate how well construction supervisors can utilise fundamental science and technological concepts/ideas to increase the efficiency and productivity of construction activities. Design/methodology/approach A new strategic layout was designed with the use of potential training guide tools. Based on the designed layout, a new supervisory training programme was developed, and 62 construction supervisors were selected, trained and evaluated in line with six parts of competencies and the relevant learning domains. An assessment guide with different levels of descriptions and criteria was developed through literature analysis and expert interviews. The research tools were verified using comprehensive approaches. Findings The overall mean values of supervisors’ performance scores indicate proficient-level grades in the competency characteristics related to taking measurements, generating drawings/designs using manual techniques and computer-aided tools, involving Bill of Quantities (BOQ) preparations and preparing training plans/materials for improving the competencies of labourers on estimation, measurements and understanding drawings. Their proficiency was notably lower in the use of information and communication technology application tools in construction tasks compared to others. The findings point to a modern generalised guideline that establishes the ranges of supervisory attributes associated with science and technology-related applications. Research limitations/implications The study outcomes produce conceptualised projections to restructure and revalue the job functions of various working categories by adding new definitions within the specified scope. This may result in constructive benefits to upgrading the current functions associated with urbanisation, sustainability and society. The implementation of the study’s findings/conclusions will have a significant impact on present and future practices in other developing nations and developing industries, even if they are directly applicable to the Sri Lankan construction industry. Originality/value Up to certain limits/stages, the study fills not only the knowledge gap in the field of creating protocols and application techniques connected to lifelong learning and skill enhancement/upgrading but also the existing gaps in work attributes and roles of construction supervisors associated with the utilisation of fundamental science and technological concepts/ideas towards reinforcing sustainable and productive site operations.

Purpose In the Global North, affordable housing has evolved and thrived, and it is now gaining traction in the Global South, where governments have been vocal supporters of the concept. Therefore, this paper aims to investigate the important criteria for selecting affordable housing units in Ghana. Design/methodology/approach A quantitative research approach was used, and a survey was administered to the residents. The data was analysed using both descriptive and inferential statistics. The relative importance index technique was used to rank the important criteria, and the EFA technique was used to create a taxonomy system for the criteria. Findings The hierarchical ranking of the most significant criteria for selecting affordable housing includes community safety, waste management and access to good-quality education. Furthermore, the important criteria for selecting affordable housing are classified into two groups, namely, “sustainability criteria” and “housing demand and supply and social service provision”. Research limitations/implications This study has implications for the real estate industry and construction stakeholders, as this will inform decision-making in terms of the design of affordable housing and the suitability of the location for the development. Originality/value These findings provide a baseline to support potential homeowners and tenants in their quest to select affordable housing. Furthermore, these findings will aid future longitudinal research into the indicators or criteria for selecting suitable locations for the development of low- and middle-income housing.

Purpose Despite city authorities in Bangladesh being concerned about urban sustainability, they often face difficulties in addressing predominant urban challenges threatening urban sustainability, due to limited relevant literature. To reduce this gap, this study aims to address the predominant urban challenges and assess their severity levels in four city corporations of Bangladesh, e.g. Rajshahi, Sylhet, Barishal, and Gazipur. Design/methodology/approach Using a mixed-method approach, this study rigorously analyzed field-level data obtained from 1,200 residents across selected cities using diverse statistical techniques. The quantitative analysis included descriptive analysis, exploratory factor analysis, and chi-square tests, whereas qualitative insights were derived through thematic analysis. Findings The study uncovered nine predominant urban challenges under two crucial factors “Feeble Urban Management” and “Illicit Activities” that collectively explain 62.20% variance. “Feeble Urban Management” explains 44.17% variance, whereas “Illicit Activities” accounts for 18.13%. Within these challenges, uncontrolled urban sprawl, inadequate disaster management, congested roads, and shabby drainage and waste management pose significant threats to urban sustainability. Illicit activities, manifested by encroachment on water sources, grabbing roadside, destruction of natural properties, and activities undermining social security, compound the urban sustainability issue. Severity analysis reveals Sylhet (54.5%), Rajshahi (46.4%), and Barishal (31.2%) as highly impacted, whereas Gazipur exhibits moderate severity (66.7%). Originality/value The findings of this study reveal intrinsic insights into urban challenges in Bangladesh that will provide valuable guidance to city authorities, equipping them to implement integrated and effective initiatives and programs that overcome these predominant urban challenges, with a specific focus on Rajshahi, Sylhet, and Barishal city corporations.