Aims: This paper evaluates the interactions between forest area, CO 2 emissions, rainfall and arable production at a national scale in Cameroon.
Methodology:The data used for this analysis was essentially time series data for all the variables spanning the period 1961-2000. It uses regression analysis to determine the most important of these variables that affects CO 2 emissions and uses correlation analysis and coefficient of determination to verify the nature of the interactions between the variables. Results: The results show that as forest area reduces there is an increase in CO 2 emissions concentration in the air in Cameroon. On the other hand, as forest area and rainfall reduce arable production also reduces but forest area is seen to be more responsible for changes in arable production than rainfall.
Conclusion:The study concludes that the interactions between CO 2 and forest area, arable production and forest area seem to be the most significant while rainfall is denoted as very variable from year to year.
The environment at various scales is greatly modified through the activities of man and his dynamic science and technology. These modifications essentially constitute land use/cover changes. This paper describes the implications of land use dynamics on resource development in Tubah Sub-division over time and space from 1983 to 2013. This research has made use of remote sensing techniques and Geographic Information System (GIS) in describing land use/cover changes in Tubah Sub-division. Primary data was obtained through field observations and ground truthing in order to confirm observations on satellite imageries. Land use maps were produced using the GIS software packages of Google Earth, ENVI 4.3, Global Mapper 15 and ArcGis 10.2. Maps were generated to show changes in land use/cover which were transposed into tables and bar graphs to show the magnitude of changes, percentage of change and the rate of change. These changes are necessary for economic development and social progress, but often come at a substantial cost on the environment and resources. The analysis of static land use maps of 1983, 2000, and 2013, all pointed to the fact that, there have been significant changes observed on forest cover, farmland, grazing land and settlement land uses.
Journal of Architectural Engineering Technology
AbstractThe environment at various scales is greatly modified through the activities of man and his dynamic science and technology. These modifications essentially constitute land use/cover changes. This paper describes the implications of land use dynamics on resource development in Tubah Sub-division over time and space from 1983 to 2013. This research has made use of remote sensing techniques and Geographic Information System (GIS) in describing land use/cover changes in Tubah Sub-division. Primary data was obtained through field observations and ground truthing in order to confirm observations on satellite imageries. Land use maps were produced using some GIS software packages such as Google Earth, ENVI 4.3, Global Mapper 15 and ArcGis 10.2. Maps were generated to show changes in Land use/cover which were transpose into tables and bar graphs to show the magnitude of changes, percentage of change and the rate of change. The analysis of static land use maps of 1983, 2000, and 2013, all pointed to the fact that, there have been significant changes observed on forest cover, farmland, grazing land and settlement land uses.
This study seeks to verify the relationship or correlation between food supply and four variables that are fertilizers, machinery, permanent cropland and permanent pasture land in Africa and Asia. The data were obtained from FAOSTATS and the World Resource Institute. The data were analyzed using the SPSS version 19. Pearson's correlation statistical tool and the multiple linear regression methods were then used within the SPSS interface to analyze the data. The results show that the levels of fertilizer application and machinery use are more significant in affecting food supply in Asia than in Africa with respect to the four variables. In Africa, permanent cropland is of greater significance when food supply is concerned with respect to these four variables. The likely trend is for Africa to enact policies that will encourage investments in machines and organic fertilizers to be able to improve its food production and supply rather than merely increasing farm sizes.
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