Browsing by Author "Salami, V.T."

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    Assessment of Forest Carbon Stocks on Forest Degradation in the Oyimo Forest Reserve, Ondo State, Nigeria
    (Department of Geography, Nasarawa State University, Keffi., 2022-10-16) Salami, V.T.; Oga, A.T.; Abubakar, Mahmud
    This study assessed the amount of carbon stock in the Oyimo forest reserve in Ondo Statewith the view to determine the above ground biomass (AGB) and belowground biomass (BGB), estimate the organic carbon content and evaluate the soil organic carbon sequestered. The SDG 15.3.1 embedded in plugin quantum geographic information system (QGIS) was the method used to carry out the analysis. In this SDG 15.3.1 there are indicator for quantifying carbon stock and sub-indicator to measure forest degradation. The results showed that initial forest area was 59,413 hectares; initial non-forest area was 245 hectares (ha), total biomass was 3,535,543 tonnes of C, loss of carbon was 127,703 tonnes of C and total carbon emission during the years was 468,669 tonnes of CO2e.From land cover of soil organic carbon of sub-indicator the area with no data was 19.01 hectares, degraded area was 18,727.849 hectares, stable area was 29,032.919 hectares and improved area was 11,9780.2184 respectively. The estimation of Carbon stock gives an idea about the quantity and quality of carbon available in the area and also how it behaves in ecosystem, where the carbon is ultimately degraded to carbon emissions to the atmosphere causing global warming and climate change, which affect entire ecosystem significantly. Therefore, Trend. Earth can be used to assess the Carbon stocks of a given forest and also can be found as the best method to calculate soil organic carbon (SOC) due to measurement of carbon and degradation, low cost and less time requirement.
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    Evaluation of Geospatial Climatic Variation and Aridity trend of the Jigawa State, Nigeria
    (Department of Geography, Nasarawa State State University Keffi, 2021-11-06) Salami, V.T.; Abubakar, Mahmud; Ogah, A.T.; Mohammed, O.
    This study investigated evaluation of geospatial climatic variation and aridity increase, high risk zone with annual seasonal variation for a period of thirty years (30 years) from 1990 to 2020 in Jigawa State. Climatic data for this work are global data sources, which include; Tropical Application of Meteorology Satellite (TAMSAT) and NASA Earth observatory. Temperature data was acquired from NASA Earth observatory while precipitation data and evapotranspiration data were obtained from TAMSAT respectively. The seasonal variation of Jigawa State was investigated using an excel spread sheet to compare precipitation and temperature in the extreme Jigawa north and Jigawa south of the areas was also analyzed to find a critical environmental factor in determining the evolution of natural vegetation by considering the water stress which may occur during reduction of vegetation cover. Results showed that there was higher evapotranspiration and temperature but less precipitation in the northern part of Jigawa state. The rate of evapotranspiration is also high from 2011 to 2020. Aridity ranges for the Jigawa state are characterized by very high aridity and very low aridity. Aridity is very high in the extreme north of Jigawa, with an aridity value of 0.20 and a land area of 9,062.7 km2 or 39 percent (%) land mass; aridity is very low in the extreme south of Katsina, with a value of 0.40 and a land area of 5,044.5 km2 or 22 percent (%) land mass. There is more precipitation in southern Jigawa than in the northern part. On the other way round, the temperature is higher in northern Jigawa than in the southern part.