Urbanization, land use transformation and spatio-environmental impacts: Analyses of trends and implications in major metropolitan regions of Ghana

Asabere, Stephen Boahen; Acheampong, Ransford A.; Ashiagbor, George; Beckers, Sandra Carola; Keck, Markus; Erasmi, Stefan; Schanze, Jochen; Sauer, Daniela

doi:10.1016/j.landusepol.2020.104707

Cited by 118 publications

(37 citation statements)

References 31 publications

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“…Previous works in Kumasi focused on LULC changes [39], the depletion of urban greenery [40,41]; deforestation and agricultural lands [20,42]; peri-urban trends in Kumasi [43,44]; urbanization and climate [36,45]; and urbanization, land utilization and spatio-environmental impacts [46]. In our research, we focus on the urban/built-up areas of Kumasi.…”

Section: Introductionmentioning

confidence: 99%

Tracking Urban Expansion Using Random Forests for the Classification of Landsat Imagery (1986–2015) and Predicting Urban/Built-Up Areas for 2025: A Study of the Kumasi Metropolis, Ghana

Frimpong

Molkenthin

2021

Land

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Kumasi is a nodal city and functions as the administrative and economic capital of the Ashanti region in Ghana. Rapid urbanization has been experienced inducing the transformation of various Land Use Land Cover (LULC) types into urban/built-up areas in Kumasi. This paper aims at tracking spatio-temporal LULC changes utilizing Landsat imagery from 1986, 2013 and 2015 of Kumasi. The unique contribution of this research is its focus on urban expansion analysis and the utilization of Random Forest (RF) Classifier for satellite image classification. Change detection, urban land modelling and urban expansion in the sub-metropolitan zones, buffers, density decay curve and correlation analysis were methodologies adopted for our study. The classifier yielded better accuracy compared to earlier works in Ghana. The evaluation of LULC changes indicated that urban/built-up areas are continually increasing at the expense of agricultural and forestlands. The urban/built-up areas occupied 4622.49 hectares (ha) (23.78%), 13,447.50 ha (69.18%) and 14,004.60 ha (72.05%) in 1986, 2013 and 2015, respectively of the 19,438 ha area of Kumasi. Projection indicated that urban/built-up areas will occupy 15,490 ha (79.70%) in 2025. The urban expansion was statistically significant. The results revealed the importance of spatial modeling for environmental management and city planning.

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Section: Introductionmentioning

confidence: 99%

Tracking Urban Expansion Using Random Forests for the Classification of Landsat Imagery (1986–2015) and Predicting Urban/Built-Up Areas for 2025: A Study of the Kumasi Metropolis, Ghana

Frimpong

Molkenthin

2021

Land

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“…In Nigeria, there is the proliferation of illicit planning schemes driven by urban expansion devoid of formal planning schemes and limited coordination among formal planning institutions (Zakka et al 2017). Subsequently, a significant proportion of physical development that happens through the urbanization cycle tend not to consent to formal physical planning standards and guidelines (Asabere et al 2020). Amin et al (2021) questioned the regulatory systems upon which physical planning occurs for the haphazard physical planning manifestations in Africa.…”

Section: Land Administration and Physical Planning In Sub-saharan Africamentioning

confidence: 99%

“…Evidence adduced by Kpienbaareh and Luginaah (2020) confirm that cities in Ghana are sprawling. Asabere et al (2020) found that urbanization has outpaced planning in Ghana and that the growth of cities has been shambolic. Cobbinah et al (2017) highlighted the emergence of environmental problems including poor sanitation, inadequate housing, slum development, and uncontrolled urban growth in urban centers as a result of unplanned physical development.…”

Section: Introductionmentioning

confidence: 99%

The evolving dynamics of land administration and its implications for physical planning in Sub-Saharan Africa: experiences from Wa, Ghana

Akanbang

Ibrahim

Yakubu³

2021

SN Soc Sci

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“…Therefore, a reasonable urban growth management policy is particularly important. An effective combination of urban development and environmental resource governance can avoid negative impacts on resources and the environment due to urban expansion [15]. Wu et al [16] used a dynamic threshold panel model to analyze the interaction between urbanization and environmental pollution.…”

Section: Introductionmentioning

confidence: 99%

Impact of Urbanization on the Environmental Regulation Efficiency in the Yangtze River Basin Based on the Empirical Analysis of Spatial Econometrics

Zhang

Tang

Bethel

2021

IJERPH

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Urbanization has been positioned as an important driving force for economic development. This article examines the impact of urbanization on environmental regulation efficiency (ERE) in the Yangtze River Basin (YRB). Based on a panel dataset of 97 cities in the YRB from 2005 to 2016, a spatial econometric model was used for analysis. Results show that the average ERE in the YRB is relatively low and manifests in the shape of a curved smile. The urbanization level of the permanent population is far lower than the average level of developed countries. However, the urbanization level is showing a steady growth trend. During this period, ERE in the Yangtze River middle, upper, and lower reaches was measured at 0.77, 0.58, and 0.52, respectively. The urbanization rate was measured at 0.59, 0.45, and 0.39, in the lower, middle, and upper reaches, respectively. When only considering population urbanization, the previously observed negative correlation between ERE and the Kuznets curve disappears. However, if the carrying capacity of economic activities is considered, the U-shaped relationship between urbanization rate and ERE returns. The environmental Kuznets curve is consequently verified. In addition, there is an inverted U-shaped nonlinear relationship between economic development and ERE. The results of this article show that there are unsustainable risks in the rapid pursuit of population urbanization. Only by improving the quality of urbanization and adapting the level of urbanization to the carrying capacity of resources and environment can we truly promote high-quality economic development. The article puts forward some suggestions to promote the green development of the economy.

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Urbanization, land use transformation and spatio-environmental impacts: Analyses of trends and implications in major metropolitan regions of Ghana

Cited by 118 publications

References 31 publications

Tracking Urban Expansion Using Random Forests for the Classification of Landsat Imagery (1986–2015) and Predicting Urban/Built-Up Areas for 2025: A Study of the Kumasi Metropolis, Ghana

Tracking Urban Expansion Using Random Forests for the Classification of Landsat Imagery (1986–2015) and Predicting Urban/Built-Up Areas for 2025: A Study of the Kumasi Metropolis, Ghana

The evolving dynamics of land administration and its implications for physical planning in Sub-Saharan Africa: experiences from Wa, Ghana

Impact of Urbanization on the Environmental Regulation Efficiency in the Yangtze River Basin Based on the Empirical Analysis of Spatial Econometrics

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