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Oluwole Ameyan 《Applied geography (Sevenoaks, England)》1985,5(4):309-323
In an attempt to elucidate the spatial variability of soils as a preliminary to detailed mapping, 100 sites within a single parent material stratum were sampled along a grid of parallel traverses. The data collected have been subjected to statistical analyses, notably determination of coefficient of variation (CV) and principal component analysis (PCA). These analyses indicate that the soils of the area of study display marked variability which does not correspond to the variability in parent material, that the spatial variations of soil chemical properties are mainly due to variations in both the clay and organic matter contents of the soils, and that textural characteristics may be used as differentiators to produce groups with precise edaphological meanings in this environment. Such groupings must, however, take cognizance of the considerable local variations due to anthropogenic factors. 相似文献
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J. Oluwole Oyebanji Prof. 《GeoJournal》1986,12(1):111-114
Summary and Conclusion In this paper, it has been demonstrated that wide disparities exist among the various local government areas of different states of Nigeria, notwithstanding the country's golden social policy goal of building an egalitarian and oppresion-free society. If the results obtained in the four states used as case studies above are anything to go by then Nigeria has to be more serious in developing ways and means of bridging the gap between the advantaged and the disadvantaged areas of the country. Part of this would involve more positive discrimination in favour of the less privileged areas in subsequent resource allocations by governments, community leaders and individual philanthropists (Oyebanji 1984). Really there is no doubt that if all areas had equal amount of influence in the manner that common resources are distributed, there definitely would have been greater degree of equality. In general, the relatively more advanced areas in each state are either urban centers and/or the seat of government — whether state or local government — or those in which the efforts of governments have been heavily subsidized through community self-help projects. The reality of this situation in the Nigerian environment has already been established elsewhere (Oyebanji 1980). Consequently it will be of immense benefit to the states under study to promote both widespread urbanization on the one hand and the spirit of self-involvement on the other hand.Despite the social relevance of this type of research however, the limitation imposed by lack of valuable and reliable data in Nigeria is extremely serious. Nevertheless, if the social state of the nation has to be carefully monitored, there must be a very marked improvement in the present social data bank of the country. As the present study has emphasized, data on many vital aspects of level of living are either dearth or non-existent altogether. Consequently, social reporting in Nigeria currently has a long way to go. It is therefore important to point out that for now the results of this and similar studies should be regarded as exploratory but nevertheless very valuable. 相似文献
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Of recent, adsorption process has gained a lot of attention as a cheap and effective means of removing trace metals from wastewater prior to discharge into water bodies. Being flexible in design and operation, the process has enabled an optimal recovery of trace metals such that the treated effluents meet the desired standards for waste disposal. Mercury is a toxicant released into the environment from natural and anthropogenic sources. It is notorious for having an unusual tendency to bio‐accumulate and persist in the food chain. Presence of mercury in food, especially those of aquatic sources has drastic implications on human health. Therefore, efforts have been made to develop and optimize low‐cost activated carbon (AC) as adsorbents for scavenging mercury from aqueous effluents. Herein, how mercury accumulates across the food chain, its health implications, and the recent advancement in the use of low‐cost ACs as adsorbent for trapping mercury from wastewater are highlighted. Relationship between the mercury removal efficiency and the surface morphology of the adsorbents as well as the influence of prevailing experimental condition on the sorption process were addressed. Challenges and future prospects of the use of low‐cost adsorbents in addressing mercury pollution in the environment are discussed. 相似文献
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Multiple deprivation in cities: the case of Ilorin,Nigeria 总被引：2，自引：0，他引：2
J.Oluwole Oyebanji 《Applied geography (Sevenoaks, England)》1984,4(1):71-80
Studies on level-of-living conditions have generally been executed at three basic levels (i.e. the interregional, the intra-regional and the intra-urban scales) and have usually been analysed using either the single variable or the multi-variable approach. The present study examines spatial variations in Ilorin, Nigeria at the relatively neglected intra-urban scale. The multi-variable approach has been preferred to the single variable method in order to account for the obvious intercorrelation of different social problems in space. Results reveal very marked spatial disparities in social conditions in the city, the more indigenous areas being the most deprived. Policy implications in favour of the more disadvanged areas include stronger community involvement by the local residents as well as more positive discrimination in subsequent allocation of funds and resources in favour of these places by policy makers. 相似文献
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Ameyan Oluwole 《GeoJournal》1987,14(1):109-114
A detailed soil survey of the lower N'gell valley, N Nigeria had previously been completed and the results presented as major
soil groups. This paper describes how, on the basis of seven measures of soil fertility, these were evaluated to produce soil
fertility maps. The maps focus attention on those chemical properties most directly related to soil fertility and the management
of crops in the field. They may be used as an interpretive classification in conjunction with the original soil map, and as
guides to the factors which need urgent attention. 相似文献
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