Geospatial Assessment of the Impact of Urban Sprawl in Akure, Southwestern Nigeria

Usman, Victor A.; Makinde, E. O.; Salami, Ayobami T.

doi:10.4236/gep.2018.64008

Cited by 6 publications

(7 citation statements)

References 16 publications

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“…The overall change over the 1991 to 2021 period showed a decrease of about 75km 2 , representing about 62% decrease in the size of the LUC. The overall decrease in the area of this LUC is expected as urban growth is very well known to be causing decline in areas under farming activities [60][61][62][63][64][65][66][67][68][69][70][71].…”

Section: Resultsmentioning

confidence: 99%

Influence of Urban Growth on Landuse/Cover in Umuahia, Abia State Nigeria

Mashi

Chup

Agoha

2021

JGEESI

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Understanding land use/landcover change (LULC) dynamics is very important in sustainable land resource management. This is especially so for developing countries of the world where majority of the people depend heavily upon natural resources for survival. In this study, moderate spatial resolution Landsat images were freely downloaded from the United States Geological Survey (USGS) archives for 4 decadal dates of 1991, 2001, 2001 and 2021 for Umuahia town, which became capital of Abia state of Nigeria in 1991. The images were analyzed in ERDAS Imagine 14 and ArcGIS 10.2 software environments to generate LULC statistics for the 4 dates. Post classification comparison algorithm was used to generate LULC change trends from 1991 to 2021. Key informants interviews and direct field observations were used to identify the main drivers of LULC change in the area. The results show that, the town has undergone significant LULC changes since its designation as Abia state capital in 1991. The extent changes for the various LULCs over the 30 year period (1991 to 2021) have been Built-up (+233%), Bareland (-34%), Woodland (45%), Uncultivated Farmland (-62%), Burnt Woodland (630%) and Agricultural land (-25%). Water Body did not undergo change over the period. It was concluded that though urban growth has promoted some degradation trends in the town, it has promoted increases in urban woodland areas which could go a long way in promoting climate change mitigation, as well as human health and comfort in the town. It was recommended that there is the need to promote deliberate reforestation efforts boost development in urban woodlands.

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Section: Resultsmentioning

confidence: 99%

Influence of Urban Growth on Landuse/Cover in Umuahia, Abia State Nigeria

Mashi

Chup

Agoha

2021

JGEESI

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“…RS is a method of collecting data at a distance from the object (earth's surface and atmosphere) under study through the use of electromagnetic sensors often by the use of satellites or aircraft (Schowengerdt, 2007). GIS and RS have been widely used in urban mapping and monitoring of urban development (Owoeye and Ibitoye, 2016;Usman et al, 2018;Popoola et al, 2020;Sharifi, 2020;Mohammadi and Sharifi, 2021;Saha et al, 2022;Moradi and Sharifi, 1 https://earthexplorer.usgs.gov/ 2023). After the pragmatic selection of the Landsat images (raster datasets) for this study, the image processing started with band combinations to develop a False Color Composite (FCC) of the images.…”

Section: Discussionmentioning

confidence: 99%

“…With respect to urban (spatial) growth and modeling, Owoeye and Ibitoye (2016) explored land use change detection in Akure using remote sensing. Consequently, Usman et al (2018) investigated the impact of urban sprawl in Akure with geospatial assessment, while Eke et al (2017) analyzed the urban expansion of Akure using geographic information systems (GIS). Exploring the relationship between urban health and city growth, Alabi (2022) observed the financial and health toll of urban sprawl on residents of Akure, while Popoola et al (2020) investigated how micro-climate is influenced by urban growth in Akure.…”

Section: Introductionmentioning

confidence: 99%

Tripartite relationship of urban planning, city growth, and health for sustainable development in Akure, Nigeria

Bayode,

Siegmund

2024

Front. Sustain. Cities

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We live in an urban planet. As the world continues to urbanize, urban development that support the health and wellbeing of city dwellers is far more important than ever before to achieve sustainable development targets. This study explores the complex relationship among urban planning, city growth, and health as critical drivers of sustainable development in the rapidly growing nodal city of Akure, Nigeria. The study provides a four-decade spatio-temporal model of urban Land Use Land Cover (LULC) changes in Akure between the years 1984 and 2023 from acquired Landsat satellite imageries. The result shows more than 20% net change increase in developed LULC classes between the study years. A strong positive correlation exists between the years covered in the analyses and urban development (r = 0.93, p = 0.002), and a strong negative relationship with the forest land use (r = −0.94, p = 0.002) with potential debilitating impacts on residents’ health, green infrastructures and the city’s sustainability in the future. Furthermore, results of key informant interviews (KIIs) of officials of the Ministry of Physical Planning and Urban Development (MPPUD) in Akure, Ondo State, unveil various views on the “place of health” in urban planning practices in Akure. A lack of synergy between urban planners and public health practitioners in the city and limiting scope of functions of urban planning on the impact of health in Akure were observed. Thus, we recommend the integration of a sustainable urban planning approach as a guide to manage the city.

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“…In a similar study, Mengistu and Salami (2007) attributed continued population expansion (Kuddus et al, 2020) as one of the key factors causing spatial growth of Built up and the related pressure on the available land resources and other land use types prompting land use class transition. Several studies have shown that impervious surfaces tend to grow due to urbanization in most parts of the country (Oyinloye & Kufoniyi, 2011;Obiakor et al, 2012;Jesuleye et al, 2013;Mahmoud et al, 2016;Usman et al, 2018;Wang et al, 2018;Wang et al, 2020). Haphazard development can be observed in the study area which is attributed to the uncontrolled increase in impervious surfaces coupled with the absence of well-defined policy implementation for impervious surfaces.…”

Section: Discussionmentioning

confidence: 99%

Effects of Increasing Impervious Surface on Water Quality in Ile-Ife Urban Watershed, Southwestern Nigeria

Adetoro¹,

Osarenren²,

Popoola³

2022

GEP

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The urban environment has continued to experience changes from increasing impervious surfaces, which alters the proper functioning of the ecological zones and impairs water quality in the watershed. Impervious cover is predominantly used as an indicator to assist in understanding and forecasting the impact of human actions and other related activities on aquatic resources. In this study, the rate of change in land uses using the impervious surface as an indicator, and the percentage of imperviousness on the effect on water quality in the urban watershed were assessed. Ile-Ife was delineated as an urban watershed, and the percentage of imperviousness from 2008 to 2016 and the effect of imperviousness on water bodies were assessed. The study utilized ASTERDEM, Worldview (0.46 m), IKONOS (1.4 m), Landsat (30 m) for 2008 and 2016, GPS and Drone (10 cm). Water sampling was carried out in selected locations as generated by the impervious surface analyst tool, (ISAT). The percentage (%) of impervious surfaces accounted for 59.4% (4567.1/7691.5ha) in 2008 and 70.3% (5408.2/7691.5ha) in 2016, from the total number of lands investigated. The turbidity values from low to high regions were 32.3, 55.9 and 82.4 NUT. Changes in LULC of the watershed led to increased surface temperature, impermeable surfaces, and decreased vegetation, which exposes the area to flooding and reduced water quality. This study emphasized the importance of GIS and its integration into urban changes and water quality assessment.

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Geospatial Assessment of the Impact of Urban Sprawl in Akure, Southwestern Nigeria

Cited by 6 publications

References 16 publications

Influence of Urban Growth on Landuse/Cover in Umuahia, Abia State Nigeria

Influence of Urban Growth on Landuse/Cover in Umuahia, Abia State Nigeria

Tripartite relationship of urban planning, city growth, and health for sustainable development in Akure, Nigeria

Effects of Increasing Impervious Surface on Water Quality in Ile-Ife Urban Watershed, Southwestern Nigeria

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