DR. Adegboyega Suleiman Abdul-Azeez (Publications)
Publisher Ilorin Journal Of Business And Social Sciences (IJBSS), 15(1):251-267, 2011
Publication Type Journal
Publication Title SPATIO-TEMPORAL MODELING OF URBAN SPRAWL FOR SUSTAINABLE ENVIRONMENT IN EGBEDA LOCAL GOVERNMENT AREA, OYO STATE, NIGERIA
Publication Authors Orimoogunje, O.O.I., Adegboyega, S.A. and Olawole, M.O.
Year Published 2011
Abstract

The study specifically examined the spatial pattern , causal factors and model urban sprawl in Egbeda Local Government Area (LGA) for sustainable environment. The study was based on data generated from air photos of 1964 and 1973 and satellite imageries from SPOT XS 1986 and SPOT-P 1993 and Landsat ETM+ 2000 of Ibadan. Visual image interpretation and digital image processing using ILWIS 3.2 AND ArcView 3.2 software was carried out for both air photos and the satellite imageries, supported by ground truthing. The entropy approach was applied for quantifying the urban sprawl. Modelling of the sprawl consider both spatial and statistical parameters. Sensitivity analysis was carried out considering the causal factors and their growth rates. the finding shows that urban expansion has encroached the rural area and engulfed 0. 53km2,  40.7km2, 59.04km2 and 76.5km2 in 1973, 1986, 1993 and 2000 respectively. The study also revealed that the entropy value which was 0.093 in 1986, increased to 0.180 (93.5%) i 1993 and dropped to 0.178 (91.4%) in 2000. The study generated urban sprawl indices within the period of 1964 to 2000 to develop a GIS database for monitoring urban expansion in the study area. The study concludes that emphasis should be placed on vertical expansion, instead of lateral expansion in order to reduce sprawl to a barest minimum while adequate capacity should be developed for planning and managing urban growth.


Publisher Ife Research Publications In Geography
Publication Type Journal
Publication Title Spatio-Temporal Analysis Of Urban Sprawl In A Fringe Area Around Ibadan, Southwestern Nigeria
Publication Authors Adegboyega, S.A. and Aguda, A.S.
Year Published 2010
Abstract

to be updated soon


Publisher Ife PsychologIA, Obafemi Awolowo University, Ife
Publication Type Journal
Publication Title Population Growth: Implications For Environmental Sustainability
Publication Authors Orimoogunje, O.O.I., Adegboyega, S.A., Banjo, O.O. and Funmilayo, O.A.
Year Published 2011
Abstract

to be completed soon


Publisher Ife Journal Of Science
Publication Type Journal
Publication Title Monitoring And Assessing Urban Encroachment Into Agricultural Land - A Remote Sensing And GIS Based Study Of Harare, Zimbabwe
Publication Authors Olawole, M.O., Msimanga, L., Adegboyega, S.A. & Adesina, F.A
Year Published 2011
Abstract

Rapid urban expansion constitutes one of the agents of land use/land cover change. Necessary and reliable data required to analyse and predict the present and future trend of land use/land cover change resulting from urbanization in most developing countries are of low quality, and unreliable. This study evaluates land use/ land cover in Harare, Zimbabwe, between 1976 and 2000, using data from Landsat satellite images. Image processing and interpretation was performed with the aid of geographic information system (GIS). Rapid conversion of land covered by forest to non- agricultural use was revealed with built-up area increase in all directions.in a leap frog manner. The study also revealed a loss of about 1.38% of farmland to urbanization between 1976 and 2000. The study shows that the dearth of data for urban management can be reversed through the use of remotely sensed data and GIS operations

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Publisher Fe Research Publications In Geography
Publication Type Journal
Publication Title Spatio-Temporal Patterns Of Development And Household Travel Characteristics In Ilesa, Osun State, Nigeria
Publication Authors Adetunji, M.A. and Adegboyega, S.A.
Year Published 2011
Abstract

to be updated soon


Publisher Management Of Environmental Quality: An International Journal
Publication Type Journal
Publication Title Spatio-Temporal Assessment Of Urban Growthof Medium-Size And Nodal Towns For A Sustainable Management: Using GIS
Publication Authors Aguda, A.S, Farinde, T.A, Adegboyega, S.A and Olawole, M.O
Year Published 2013
Abstract

 

Purpose

– Urban growth has increasingly drawn much attention of erudite scholars due to its central role in achieving a sustainable urbanization. Despite this awareness, studies on urban growth have continued to dwell on the traditional method of presenting geographical Information, which has proved to be slow and inadequate. The purpose of this paper is to adopt a Geographical Information System (GIS) in assessing the spatial pattern and the physical planning problems associated with the expansion of Ore township between 1964 and 2002. Moreover, the study tends to serve as baseline study for subsequent studies on medium-sized and nodal towns.

 

Design/methodology/approach

– The study utilized data from secondary sources such as Landsat-TM, February, 1986, Landsat ETMþ, December, 2002; Topographical map of Ore 1964 and population census data of Ore 1991. The study employed ILWIS Academic 3.2 GISsoftware to process the imageries. Coordinates extracted from the topographical map in UTM were used to georeference the enhanced and filtered images upon which supervised classification was performed, followed by error matrix operation and ground truthing to ensure high level accuracy. This results in six domains, namely, built-up, forest reserve, farmland, secondary forest roads and water bodies, which were analyzed on temporal basis. Predictive model was used.

Findings

– The study found that Ore township occupied an area of 1.2 km2 in 1964, expanded to 11.3 km2 in 1986 and 13.2 km2 in 2002 respectively. The prediction showed a possible expansion of 55.33 km2 by 2027. The results further revealed physical planning problems generated by these expansions – housing, inadequate waste disposal system, encroachment into agricultural lands, inadequate health facilities and poor drainage system. From field survey, 62 percent of 125 residential housing units sampled disposed refuse themselves, while 20 percent have no organized refuse collection and 18 percent dispose through other means. This suggests the vulnerability of inhabitants to health risks and environment problems.

Practical implications

– Urban growth data are useful in evaluating environmental impacts, delineating growth boundaries, developing land use zoning plans and estimating the expansion rate of a town to advise the government towards proper planning and distribution of utilities. These can be achieved through the adoption of GIS approaches to information gathering and analysis for regular monitoring and evaluation of development plans. Although it is capital intensive, it is worthwhile.

Originality/value

– The use of GIS and remotely-sensed data integrated with population census data and topographical map data has demonstrated the capability inherent in the new tools, GIS and remote sensing, to generate to some extent base line data for the town planners, in order to proactively channel the urban development in an appropriate direction, particularly the medium-sized and nodal towns that are somewhat neglected.

 


Publisher World Scholars; Journal Of Sustainable Society,
Publication Type Journal
Publication Title Spatial Analysis Of Factors Responsible For Incidence Of Water Borne Diseases In Ile-Ife Using GIS Techniques
Publication Authors Olajuyigbe, A.E., Alinaitwe, P., Adegboyega, S.A. and Salubi E.A
Year Published 2012
Abstract

The high prevalence of cases of water borne diseases in most cities in Nigeria is alarming. In these cities, there is little documentation about the spatial variability of the incidence of the diseases. This study adopts GIS techniques to investigate the spatial variation of water borne diseases in Ile-Ife, Nigeria. Data for the study were acquired from IKONOS satellite imagery and topographical map from which essential features were extracted using digital image processing techniques of Erdas Imagine 9.1 version. Structured questionnaire was also used to elicit information on households’ socio-economic characteristics. Water samples were collected and analyzed using standard microbial and chemical methods. The microbial count, pH and water hardness were interpolated using Krigging interpolation technique in ArcGIS 9.3. The secondary data utilized for the study include land use data and reported cases of water borne diseases from health facilities. Geocoding technique of ArcGIS 9.3 was employed to match the addresses of the patients with the cases of water borne diseases. The results showed that most reported cases of water borne diseases were due to environmental factors including poor environmental sanitation and topography. This implies that a continuous negligence and under estimation of the role of these factors in the spatial spread of the water borne diseases may increase the vulnerability and health risk of the people in the area. The study recommends frequent treatment of wells and boreholes, improved environmental sanitation and enhanced waste management strategies.

 


Publisher European Journal Of Social Sciences
Publication Type Journal
Publication Title Olajuyigbe, A.E., Alinaitwe, P., Adegboyega, S.A. And Salubi, E.A. (2013), Vulnerability And Risk Analysis Of Water Borne Diseases In Ile-Ife, Nigeria Using GIS
Publication Authors Olajuyigbe, A.E., Alinaitwe, P., Adegboyega, S.A. and Salubi, E.A.
Year Published 2013
Abstract

In most developing countries, availability of piped borne water is grossly inadequate. Hence, most people rely on unsafe water for domestic use that leads to high prevalence of water borne diseases. This study demonstrated the capability of GIS techniques in

combining different datasets such as relief, soil, settlement pattern, land use, waste dumpsites, pH, total water hardness and microbial count to model vulnerability of residents in Ile-Ife, Nigeria to the prevalence of water borne diseases using ILWIS 3.4 and ArcGIS 9.3 versions. The study also used structured questionnaire to elicit information on the socio-economic conditions of residents. The results of the analysis showed that 74% of the households used unimproved water. Typhoid fever was the most prevalent water borne disease followed by diarrhorea. Analysis of water samples in the community revealed high counts of micro-organism and microbial growth. The pH value from the samples proved that the water is slightly acidic while the total hardness is also high. The spread of water borne disease was visualized through spatial geo-coding technique that matched the addresses of cases to specific locations in the study area. Vulnerability of the study area to water borne disease was assessed through the use of geo-spatial operators such as overlay, union, clipping, merging and selection of attributes to spatially visualize contributing factors initiating water borne diseases in the study area. The result showed that most areas within the city centre are highly vulnerable to water borne diseases. In addition, only an inconsequential proportion of the city exhibits low vulnerability to waterborne diseases. This implies that domestic water quality in this city has been grossly compromised. The study therefore advocates for effective wastes management, provision of safe drinking water and initiation of sustainable urban renewal programme for the city. 


Publisher Proceedings Of Humboldt International Conference, O.A.U,
Publication Type Conferenceproceeding
Publication Title Urban Waste Management In Lagos Metropolis. In: Remi Adeyemo (eds) Urban Agriculture, Cities And Climate Change. Proceedings Of Humboldt International Conference, O.A.U, Ile-Ife
Publication Authors Orimoogunje, O.O.I., Adegboyega, S.A. and Ekanade, O.
Year Published 2011
Abstract

to be updated


Publisher Nil
Publication Type Journal
Publication Title Evaluation Of Spatio-Temporal Dynamics Of Urban Sprawl In Osogbo, Nigeria Using Satellite Imagery & GIS Techniques
Publication Authors ADEGBOYEGA Suleiman Abdul- Azeez
Year Published 2013
Abstract

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Publisher Nil
Publication Type Disertations
Publication Title Geo-Spatial Assessment Of Urban Sprawl And Fringe Dynamics In Osogbo
Publication Authors ADEGBOYEGA Suleiman Abdul- Azeez
Year Published 2012
Abstract

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Publisher Nil
Publication Type Disertations
Publication Title Urban Sprawl Measurement In Egbeda Local Government Area, Ibadan Using GIS Techniques
Publication Authors ADEGBOYEGA Suleiman Abdul- Azeez
Year Published 2008
Abstract

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Publisher Nil
Publication Type Disertations
Publication Title Marketing Strategy Of Auto Mechanics In Ile-Ife, Osun State, Nigeria
Publication Authors ADEGBOYEGA Suleiman Abdul- Azeez
Year Published 1999
Abstract

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Publisher Nil
Publication Type Disertations
Publication Title Location Of Motor Parks In Ile-Ife, Osun State, Nigeria
Publication Authors ADEGBOYEGA Suleiman Abdul- Azeez
Year Published 1992
Abstract

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Publisher Nil
Publication Type Books
Publication Title Readings In Man –Environment Relations. Nimsfield (Nigeria) Limited, Ikeja, Lagos
Publication Authors ADEGBOYEGA Suleiman Abdul- Azeez
Year Published 2007
Abstract

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Publisher Nil
Publication Type Journal
Publication Title “Analysis Of Land Use/Land Cover Of Girei, Yola North And South Local Government Areas Of Adamawa State, Nigeria Using Satellite Imagery”, FUTY Journal Of The Environment, Volume 7, Number 2
Publication Authors ADEGBOYEGA Suleiman Abdul- Azeez
Year Published 2012
Abstract

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Publisher Nil
Publication Type Technical Papers
Publication Title Geographic Information Systems (GIS) And Environmental Challenges: A Review And Future Direction In Nigeria: A Paper Presented At Osun State University, Ipetu-Ijesa Campus; 1st Annual International Conference On Education
Publication Authors ADEGBOYEGA Suleiman Abdul- Azeez
Year Published 2011
Abstract

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Publisher Nil
Publication Type Technical Papers
Publication Title Indigenous Approach To Soil Erosion Control In The Southwest Nigeria. FIG Working Week “ Knowing To Manage The Territory, Protect The Environment, Evaluate The Cultural Heritage”
Publication Authors ADEGBOYEGA Suleiman Abdul- Azeez
Year Published 2012
Abstract

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Publisher Nil
Publication Type Technical Papers
Publication Title Remote Sensing And GIS As A Decision Support Technology For Achieving Food Security In Nigeria: A Paper Presented At Federal University Of Technology, Akure
Publication Authors ADEGBOYEGA Suleiman Abdul- Azeez
Year Published 2012
Abstract

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Publisher Journal Of Scientific Research & Reports 3(12): 1665-1688, 2014; Article No. JSRR.2014.12.009
Publication Type Journal
Publication Title Spatio-Temporal Analysis Of Road Accidents In Abuja, Federal Capital Territory (FCT), Nigeria Using Geographical Information System (GIS) Techniques
Publication Authors Ayo Emmanuel Olajuyigbe, Victoria Ogan, Suleiman Abdul-Azeez Adegboyega and Oluseyi Fabiyi
Year Published 2014
Abstract
Aims: Road accidents have impacted adversely on the socio-economic development of cities in developing countries. Abuja, the administrative headquarters of Nigeria is known
for regular occurrences of such accidents. This study attempted to identify factors responsible for these accidents and assessed their pattern with a view to mapping the
black spots in the city using GIS techniques.
Study Design: The study was an attempt to investigate the various accident spots in Abuja, Nigeria in a bid to present a platform for proffering plausible solutions to the rampant road accidents in the city.
Place and Duration of Study: Abuja, Nigeria, between January 2011 to July 2011. 
Methodology: Road accidents data from road users, National Union of Road Transport. Workers (NURTW) and Federal Road Safety Corps (FRSC) were acquired using structured questionnaire. Also, secondary data including topographical map, quick bird
image, accident records between 2009 and 2011, and GPS points of areas prone to road accidents were plotted on the Abuja base map. These data were integrated and analyzed
using spatial analysis tools of AcrGIS 9.3. Table data were also imported into ArcGIS database. Overlay function and query operation were performed to determine the
accident hotspots based on the frequency of road accidents and their spatio-temporal trend. 
Results: Findings showed that Wuse maintained the highest black spots while Asokoro experienced the least. It was observed that accidents are caused by road, vehicle, driver
and environmental factors.
Conclusion: The study recommends provision of functional traffic lights and defining danger times of high risk locations in Abuja.

Publisher International Journal Of Sustainable Land Use And Urban Planning ISSN 1927‐8845 | Vol. 1 No. 1, Pp. 1‐20 (2013)
Publication Type Journal
Publication Title Assessment Of Quality Of Life Using Geographical Information System Approach For Poverty Alleviation Decision-Making
Publication Authors Olajuyigbe, A.E, Osakpolor, S and Adegboyega, S.A
Year Published 2013
Abstract
The effectiveness of the mapping and assessment of Quality of Life (QoL) in the identification of problem areas and in monitoring development policies makes it a suitable method in poverty studies. In an attempt
to enhance QoL as a strategy for poverty alleviation decision-making, this research has adopted the analytical tool of Geographical Information System (GIS). Twelve indicators were used to assess the QoL
of Egor Local Government Area (LGA), Edo State, Nigeria. These indicators were grouped into three different domains of life (social, economic and physical). Spatial autocorrelation check was performed on
the indicators to determine the spatial prediction method that was used to map each indicator. Of all these indicators, only two were spatially auto-correlated. The two indicators were mapped using the Inverse
Distance Weighting (IDW). The other indicators were mapped using the voronoi polygons. The twelve models were used to model and assess QoL with the utilization of Multi-Criteria Decision Analysis. The
weights used for the combination of the various mapped indicators were given by the respondents. The QoL model was cross-validated using leave-one-out (LOO) cross-validation method. The result showed
that the QoL of 61.53% of the geographic space of Egor LGA was below average, 17.94% was extremely poor, and 14.55% was average, while the classes above average and excellent were not on the QoL
model. In addition, the research identified priority development areas and concluded that the QoL of the people of Egor LGA was poor and required urgent conscious intervention by all development partners
including the government.

Publisher African Journal Of Environmental Science And Technology
Publication Type Journal
Publication Title Assessment Of Environmental Responses To Land Use/land Cover Dynamics In The Lower Ogun River Basin, Southwestern Nigeria
Publication Authors Awoniran D. R., Adewole M. B., Adegboyega S. A. and Anifowose A. Y. B.
Year Published 2014
Abstract
This study investigates the pattern of land use/land cover change in the Lower Ogun River Basin
between 1984 and 2012. Two sets of topographical maps, a Landsat-5 TM image of 1984, Landsat-7
ETM+ of 2000 and a Google Earth image of 2012 were used for the study. The topographical maps and
satellite images were digitally processed using ILWIS 3.2™ software and exported to ArcGIS 9.3™ for
further processing and analysis. The processed images were subsequently classified using the
maximum likelihood classification algorithm, resulting in the identification of seven land use classes.
Furthermore, change detection analysis was carried out using Cross Module in ILWIS™. The result of
the change detection analysis indicated that between 1984 and 2000, 80.08% of the land cover in the
study area has been converted to other land uses while only 19.92% remained unchanged. Also, within
the same period, light forests, non-forested wetlands and forested wetlands decreased at average
annual rates of 8.26, 4.66 and 2.81%, respectively, while water bodies also decreased at an annual rate
of 0.17%. On the other hand, farmland, shrubs and urban/built-up areas expanded at average annual
rates of 7.23, 6.74 and 4.65%, respectively. The result further indicates that between 2000 and 2012,
49.86% of the land cover has been converted to other land uses, while 50.14% remained unchanged, and
that farmlands, shrubs, urban/built-up areas and forested wetlands expanded at average annual rates of
6.01, 1.95, 0.89 and 0.17%, respectively, just as light forests, non-forested wetlands and water bodies
decreased annually by 8.26, 2.70 and 1.40%, respectively. Five randomly collected soil samples were
analyzed for their physicochemical properties. Findings show the growing impact of urban agriculture
on wetland ecosystem within the study area, manifesting in soil degradation and biodiversity loss. The
implication of these findings is that the area is susceptible to devastating flooding which can culminate
in the loss of lives and properties. This study recommends the development of effective land
management information system and policies that will ensure sustainable management of fragile
ecosystem.

Publisher American Journal Of Environmental Sciences 10 (4): 412-423, 2014 ISSN: 1553-345X
Publication Type Journal
Publication Title AIR POLLUTION AND CLIMATE CHANGE IN LAGOS, NIGERIA: NEEDS FOR PROACTIVE APPROACHES TO RISK MANAGEMENT AND ADAPTATION
Publication Authors Akinola A. Komolafe, Suleiman Abdul-Azeez Adegboyega, Adeleye Y.B. Anifowose, Francis Omowonuola Akinluyi and Dauda Rotimi Awoniran
Year Published 2014
Abstract
The significance of air pollution as one of the contemporary issues and accelerating factors that propel
climate change in both developed and developing countries cannot be overemphasized. The problem of
air pollution has seemingly become intractable with the incessant failure of both global and local
environmental policies purportedly emplaced to address its devastating trend, particularly in growing
megacities of the world. The devastating effects of the phenomenon are more pronounced in megacities
of developing countries than in developed ones. Lagos, as an industrialized, commercialized and an
emerging megacity in Nigeria, has been subjected to several predictions of the negative impacts of
changing climatic conditions partly caused by ubiquitous air pollution. Efforts at stemming the tide of the
increasing challenges of air pollution worldwide has significantly been thwarted by inadequate funding,
hence the need to review the literature on the environmental implications of growing air pollution, its
contributions to climate change and its negative impacts on the lives and properties of teeming
inhabitants of Lagos. A review like this will provide a synthesis of knowledge and information on
mitigative and adaptive measures that can be adopted to minimize the impacts of air pollution on the
mega city.This study utilizes consciously selected and current literatures on the subject matter and found
that Lagos inhabitants have been vulnerable to virtually all forms of damaging effects of climate change
majorly propelled by seemingly uncontrollable air pollution. This implies that the situation requires
proactive measures, otherwise, avoidable loss of lives and large scale destruction of properties may be
inevitable. The paper therefore advocates involvement of all stakeholders in both mitigation and
adaptation measures to climate change through enhancement of indigenous knowledge and creation of
awareness among citizens about the need to be conscious of their carbon foot prints.

Publisher Journal Of Sustainable Development In Africa (Volume 16, No.7, 2014) ISSN: 1520-5509
Publication Type Journal
Publication Title GEOSPATIAL ASSESSMENT AND MODELING FOR THE CONSERVATION OF HERBAL MEDICINE SPECIES IN DELTA STATE, NIGERIA
Publication Authors Ayo Olajuyigbe, Suleiman Adegboyega and Akpofure Fakpor
Year Published 2014
Abstract

Herbal Medicine plants are critically under serious threat due to anthropogenic activities in the fragile forest ecosystems in Nigeria. The study therefore examines the herbal medicine plants spatial distribution, change pattern and projects future changes to identify conservation priority areas. Landsat TM 1987 and SPOT 5 2006 satellite images were used in the study. GPS was used to collect training sites sample coordinates and used for signature development in an Object–Based Image Analysis and Segmentation Classification process for Land Change modeling. Land Cover Change Modeler and GEOMOD Modeler with IDRISI were utilized in spatial analysis. The results showed that Rhizophoraceae (Rhizophora mangle, R. racemosa) Species was declining at 353.53 hectares per year between 1987 and 2006, and projected loss at 376.16 hectares from 2006 to 2025. By implication, approximately 7,147 hectares would be under the threat of loss by 2025. Also, Rauvolfia vomitoria, receded at 10.29 hectares per year between 1987 and 2006 but would decrease to a rate of 0.085 hectares from 2006 to 2025, suggesting that about 1.6 hectares would be under extinction by 2025.By implication, the herbal medicinal plants have been susceptible to a series of encroachments due to unsustainable use of the forest resources. In this case, sustainability of these species have been threatened due to unmaintained conditions or low resilience of the species to cope with changing conditions. The study advocates monitoring and controlling of activities and developments within the area, and designating the threatened areas as protected areas.


Publisher International Journal Of Criminology And Sociology Theory
Publication Type Journal
Publication Title Spatial Analysis Of Factors Responsible For Spread Of Crime Activities In Akure, Nigeria, Using GIS Techniques
Publication Authors Olajuyigbe, A.E., Adegboyega, S.A. & Agboola, D.A.
Year Published 2015
Abstract
This research attempts to bridge the gap between the old and modern fashion of
keeping and storing criminal data by investigating the level and spatial analysis
of crime occurrence in Akure, Nigeria with a view to promoting security in the
city. The responses obtained from the administered copies of the questionnaire
were coded and entered into Microsoft Excel 2013 for generating spatial
database and exported to Statistical Package for Social Science (SPSS) version
17 for statistical analysis. The crime data were analyzed using spatial analysis
technique in ArcGIS 10, Global Mapper 13 and CrimeStat III. Overlays
operations were carried out to evolve crime maps. GPS Garmin 76 was
employed to obtain co-ordinates of major landmarks in the area, which
comprise police stations, banks, markets, liquor stores, and places of worship
among others. These were subsequently registered on the base map. The
information extracted from the analyzed responses from the questionnaire and
crime data were geocoded to the administered points using ArcGIS 10 for
better and advanced spatial analysis, and also for hotspot and black spot
analysis using Geostatistical Analyst. The study found that the main road
network that traverses Akure Metropolis, provides easy access and exit to
criminals, and constitutes a dominant axis of crime events as facilities located
along the road usually experience armed robbery attack or burglary. Again,
crime hotspots are more prevalent in the city core. In view of the efficacy of
GIS technique as a tool for detecting crime pattern, occurrence and prediction,
the study advocates the development of all inclusive crime database system and
training of security agents in the use of information technology to improve
intelligence gathering capabilities in a bid to combat crimes in Akure
metropolis in particular and Nigeria in general.

Publisher The Journal Of Sustainable Development In Africa
Publication Type Journal
Publication Title MODELLING OF LAND USE AND LAND COVER CHANGE IN IBADAN NORTH-WEST LOCAL GOVERNMENT AREA (LGA), NIGERIA USING SATELLITE IMAGERIES AND GIS TECHNIQUES
Publication Authors Adebola, A.O., Adegboyega, S.A., Olajuyigbe, A.E. & Oladejo, S.O.
Year Published 2015
Abstract
This study examines urban spatial change in land use and land cover of Ibadan Northwest Local Government Area (LGA)
in Oyo State. The general patterns of land use/cover as they were recorded in remotely sensed data were analysed. Multidate
satellite imageries (Landsat ETM+ 2000, Landsat ETM+ 2014 of 30m spatial resolution respectively were obtained
and used for the study. These images were enhanced, geo-referenced and classified using IDRISI software. The result of
ground truthing was combined with visual image interpretation as training sites for supervised classification. To predict
land use land cover change of the area in the next 7 years, CA-Markov chain analysis, a land cover prediction procedure
was introduced. The results showed that the natural environments (vegetation, wetland, water bodies, forest, grassland and
built-up) were being threatened, as they reduced continually in the area extent over time and space while the social
environment (built up area) expanded and this may likely be the trend between 2000 and 2021 as projected. The study
discovered that urbanization processes is majorly responsible for land-use/land-cover change in Ibadan North-west. In
conclusion, the study advanced our frontier of knowledge on land use/cover study by providing information on the status
of natural and social environment in Ibadan North-west, between 2000 and 2021 using remotely sensed images and
Geographic Information Systems (GIS) technology.

Publisher American Journal Of Environmental Sciences
Publication Type Journal
Publication Title A Review Of Flood Risk Analysis In Nigeria
Publication Authors Komolafe, A.A., Adegboyega, S.A., & Akinluyi, F.O
Year Published 2015
Abstract
Nigeria has witnessed diverse flood events in the past years
and due to the high level of vulnerability and lack of coping capacity of
the people, with the fast occurrence of extreme events resulting from
climate change, many lives and properties are at risk of its impacts. This
paper reviews the recent past and present efforts in assessing the flood
impacts in Nigeria. We concentrate this study on the recent works
(methods and results) in assessing flood impacts in the country under
basic components of flood risk analysis: The hazards mapping and
modeling, exposure and vulnerability assessment, with the aim of
suggesting possible urgent needs and further development. Based on our
review, we conclude that, there is need to explore more effectively the
use of state of the art flood models, which integrates all hydrological
processes for more accurate prediction and mapping of flood and its
associated risks. Also, as one of the steps to plan for adaptation and
mitigation of future flood risk and climate change, there is a serious need
of detailed research in the development of regional or national flood
damage functions for pre-disaster flood damage estimation. The study
also suggests further study on the environmental and health impact of
flood in the country.