42 research outputs found

    Economic Analysis of Climate Change Effects on Arable Crop Production in Nigeria

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    The study was designed to evaluate the effects of climate change on arable crops’ productivity, in Nigeria. It estimated the influence of climate factors on farm productivity (net revenue variability) in the country. The study relied mainly on institutional (NIMET) and primary data for its analysis. Data were obtained using a set of structured questionnaire administered in a multi-stage, stratified random sampling manner on arable crop farmers producing maize, rice, cassava, yam and cowpeas. Sixty (60) farmers each were randomly selected from 5 states in each of the five agro-climatic zones in Nigeria giving a total sample size of 300.  Data collected were analyzed using Ricardian model. It was found that rainfall and temperature variations, planting materials costs, household size and labour cost exerted statistically significant effects on level of gross margins.  Their elasticities were 1.199 (p <0.01), 8.219 (p <0.01), 0.108 (p < 0.05), 0.097(p <0.01) and 0.124 (p <0.05) respectively. Keywords: Climate variability, climate change risks, arable crop productivity, Ricardian Mode

    Modeling the Determinants of Foreign Reserves in Nigeria

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    This study evaluated the determinants of foreign reserves in Nigeria. Literature relevant to the subject matter were rigorously reviewed. The model of the study hypothesized that foreign reserve (RESV) in Nigeria is a function of some macroeconomic variables. The Johansen cointegration tests established evidence of a long run relationship among the variables. The results of the estimated short run coefficients based on parsimonious Error Correction Model (ECM) indicated that RGDP, oil exports (OILEXP) are positive and significant determinants of RESV. This significant deterministic value of OILEXPT remained up to the first period lag. Expectedly, EXCH was found to be significant but negative determinant of RESV. FDI inflows positively and significantly determine RESV only in its first period lag while lending rate (LR) was discovered to be a negative and insignificant determinant. Similarly, the coefficient of inflation rate (INFL) was negative and significant. However, the coefficient of non-oil exports (NOILEXP), though positive, was not significant determinant of RESV. The probability of the diagnostic tests conducted reinforced the robustness of the model. On the basis of the empirical findings we recommend that the government incentivise NOILEXP as a means of positively affecting RESV. Keywords: Foreign Reserves, Exchange Rate. JEL Classification: F41, C5, C22

    Econometric Analysis of Influences of Trade Openness, Economic Growth and Urbanization on Greenhouse Gas Emission in Africa (1960-2010)

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    This study investigated the influences of economic growth, increased urbanization and trade openness on carbon dioxide (CO2) emissions in Africa. The study used time series data accessed from World Bank Data Base and Environmental Information Association (EIA) covering 51 years (1960-2010). The data were subjected to various econometric tests including Unit root tests before applying the bound test for cointegration using Autoregressive Distributed Lag (ARDL). It was found that GDP growth rate (p<0.05) and trade openness (p<0.05) were the major long-run and short-run determinants of emissions (Green House Gas emissions) on the continent. The findings which agreed with other environmental economists’ and Kuznet’s postulation informed us to recommend that African countries should begin to take proactive measures that will bring about green economy on the continent. Keywords: Green House Gas Emission in Africa, Economic Growth, Trade Openness, Urbanizatio
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