Abstract: Emission of CO2 into the atmosphere poses both morbidity and mortality health effect on human life. Studies have evaluated CO2 emissions from different sources in Nigeria, but levels of CO2 from residential area located within industrial layout have not been investigated. This was the gap which the study set out to bridge. The study was carried out at Oluyole Industrial Estate, Ibadan and a residential settlement within the layout. Levels of CO2, relative humidity and temperature were measured at 3 hourly intervals from 0600 to 2100 for a period of 7 consecutive days, at nine different points which included 5 industrial areas and 4 residential areas. These measurements were carried out with the aid of a calibrated portable CO2 Meter. The CO2 concentration of all the industrial and residential areas exceeded IPCC limit of 350ppm. Percentage spatial increases in CO2 emission in Res 1, 2, 3 and 4 compared to IPCC standard were 30.1%, 36.3%, 37.6% and 41.4% respectively. Res 4 had the highest on Monday among the residential areas. Res 4 had the highest CO2 level and differed significantly from the other residential areas. All the industrial and residential areas had temperature values higher than the recommended limit. Based on these findings, the study suggested that residential areas should be cited away from the industrial areas; and policies on maintaining environmental quality should be implemented and enforced.Abstract: Emission of CO2 into the atmosphere poses both morbidity and mortality health effect on human life. Studies have evaluated CO2 emissions from different sources in Nigeria, but levels of CO2 from residential area located within industrial layout have not been investigated. This was the gap which the study set out to bridge. The study was carried out...Show More
Abstract: Soil erosion is one of the natural resources which can be influenced by Land use land cover change (LCC). The main influencing factor for land use land cover change is the increase of population, which in turn resulted in land degradation. This study aimed at modeling and analyzing LCC and its effect on soil erosion. The study was conducted in the highlands of, Blue Nile Basin, Ethiopia. Three Landsat images (1986, 2000 and 2016) were used to analyze the LCC. Supervised classification using maximum likelihood algorism was used to analyze the LCC. Four land cover types (LCTs) cropland, forest, and grassland and shrubland were defined. Multi-criteria decision analysis (MCE) using the Analytic Hierarchy Process (AHP) was used to prioritize the most influencing factor for soil erosion. Five major factors; land use, slope, soil types, Topographic Wetness Index (TWI) and altitude were considered to analyze the erosion hotspot area. The result showed that cropland and grassland increased from 41.6% and 15.4% in 1986 to 58.8% and 28.3% in 2016, respectively. However, shrub-land and forest decline from 32.3% and 10.6% in 1986 to 5.6% and 7.3% in 2016, respectively. The AHP analysis showed that LCT is the most contributors for erosion. It is observed that free grazing in the area is the common practice which is the main contributor to erosion. Hence, 50% of the gully erosion is influenced by LCT. The resultant erosion risk map shows that 1.12% of the area lies under the low-risk zone, whereas 19.02%, 72.67% and 7.2% of the total area fall in medium, high and very high-risk categories respectively. The results verified by field data collected and the judgment of the experts.Abstract: Soil erosion is one of the natural resources which can be influenced by Land use land cover change (LCC). The main influencing factor for land use land cover change is the increase of population, which in turn resulted in land degradation. This study aimed at modeling and analyzing LCC and its effect on soil erosion. The study was conducted in the ...Show More
