Due to the increasing environmental hazards of climate change phenomenon, it has become a major concern of most environmentalist. Currently the world struggles to manage waste which are generated from human activity and it affects the global climate either positively or negatively. Therefore, particular attention should be paid to sustainable waste management strategy so as to ameliorate the issue. To this end, the 3-R concept of waste management (reduction, reuse and recycle) have been variously pursued by municipalities towards a sustainable waste management system. This study focused on the waste-to-wealth activities across the urban neighborhoods in the colonial city of Enugu and adopted a qualitative survey research design. Using stratified and simple random sampling technique, a survey was conducted in eight selected neighbourhood and orally interviewed waste pickers within the study area. It discusses solid waste disposal method in Enugu metropolis with a view to facilitating sustainable practices for enhanced environmental condition and wealth creation. The paramount theme is on the socio-economic networking of the waste-to-wealth activities in the area and the derivable benefits towards addressing the effects of global climate change phenomenon in the city. Its research results highlight the ineffective waste management system within the metropolis and showed that huge financial gains could be harvested from waste product. Also it revealed that waste picking is done on informal scale across all neighbourhoods in the study area. It concludes and recommends measures towards enhancing waste-to-wealth as a strategy for addressing the global climate change in the city.

Accelerated spatial growth of urban areas is a key driver to land use/land cover change with its concomitant effect on environmental sustainability. The dearth of data on the rate of urban expansion, especially in many developing countries, including Nigeria has continued to hinder effective land use planning and sustainable development. The study aims to identify and analyze the settlement patterns and trends in urban growth at ten years intervals and their planning implications in Abuja, Nigeria. It relied on data generated via remote sensing and Geographic Information Systems to create the map and examine the land cover change in the study area. Classification of land cover using LANDSAT data and land cover transitions for 29 years (1990 to 2019) were mapped and the net land cover change was computed. The results showed the settlement pattern and an increase in the urban built-up area ranging from 1.8% in 1990 to 19.3% in 2019. The dispersion pattern revealed a large concentration of the built-up spaces to be in the eastern region and that the expansion continued from east to south and south-west. The bare land cover types were found to have increased while vegetation land cover decreased rapidly by 30.4% from 1990-2019. The study recommends the need for city planners to decentralize urban planning and development control with adequate provision of affordable urban facilities at the peripheries of cities in Nigeria. Furthermore, massive integration of green infrastructure in built-up areas is required to mitigate the effects of vegetation loss in cities.

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The need to address the challenge of housing demand in cities has not recorded much success. Informal settlements keep springing up in cities of developing countries in a bid to meet this need. However, due to the degenerated nature of informal settlements, efforts are usually made to improve them. Most of the programmes towards the improvement of informal settlements have only addressed the symptoms rather than the causes. This study aims to assess the footprint occupation of informal settlements in Enugu City and identify the factors that contribute to such dynamics. A total of 276 questionnaires from household heads and 47 from urban planners were analysed. Findings revealed that informal settlements are gaining dominance in Enugu City. The 26 identified factors were reduced, using factor analysis, into nine components that accounted for 70% spatial dominance in Enugu City. Informal settlements need to be approached concerning their triggering factors such as closeness to other informal settlements, and low incomes especially from rural agriculture, among others, for an encompassing approach to its management in Enugu City.