Musah Mohammed, Owusu-Akomeah Michael, Kumah Emmanuel Attah, Mensah Isaac Adjei, Nyeadi Joseph Dery, Murshed Muntasir, Alfred Morrison
Department of Accounting, Banking and Finance, Faculty of IT Business, Ghana Communication Technology University, Accra, Ghana.
Institute of Applied Systems Analysis (IASA), School of Mathematics, Jiangsu University, Zhenjiang, People's Republic of China.
Environ Sci Pollut Res Int. 2022 May;29(21):31972-32001. doi: 10.1007/s11356-021-17685-y. Epub 2022 Jan 11.
Numerous studies have examined the influence of macroeconomic factors on environmental quality in Ghana. However, to the best of our knowledge, there has been no study on the connection between green investments, financial development, and environmental quality in the context of this Sub-Saharan African country. This study was therefore conducted to help fill this gap using annual frequency time series data ranging from 1970 to 2018. In attaining the objectives of this study, robust econometric techniques were employed. From the results, all the variables were first differenced stationary and cointegrated in the long run. The dynamic ARDL simulations technique with the support of the ARDL estimator was employed to examine the elastic effects of the predictors on the response variable, and from the discoveries, green investments improved environmental quality in Ghana both in the long and the short run via carbon dioxide mitigations. However, in both the long and the short run, financial development and energy utilization had a detrimental influence on environmental quality due to their positive influence on carbon dioxide emissions. Moreover, the N-shaped association between national income and environmental pollution was validated for Ghana. On the causal directions amidst the variables, there was no causality between green investments and environmental degradation was evidenced; however, a bidirectional causality between financial development and environmental pollution was also discovered. Also, unidirectional causalities running from national income and energy consumption to environmental degradation were discovered. Based on the findings, the study recommend that investments in green sources should be intensified to help improve environmental quality in Ghana. Furthermore, improving developments in the financial sector is a vital means through which the country could attain its sustainable development goals.
许多研究考察了宏观经济因素对加纳环境质量的影响。然而,据我们所知,在这个撒哈拉以南非洲国家的背景下,尚未有关于绿色投资、金融发展与环境质量之间联系的研究。因此,本研究利用1970年至2018年的年度时间序列数据来填补这一空白。为实现本研究的目标,采用了稳健的计量经济学技术。结果显示,所有变量首先是一阶差分平稳的,并且从长期来看是协整的。在自回归分布滞后(ARDL)估计器的支持下,使用动态ARDL模拟技术来检验预测变量对响应变量的弹性效应,从研究结果来看,绿色投资通过减少二氧化碳排放,在长期和短期内都改善了加纳的环境质量。然而,在长期和短期内,金融发展和能源利用由于对二氧化碳排放有正向影响,对环境质量产生了不利影响。此外,加纳验证了国民收入与环境污染之间的N形关联。在变量之间的因果方向上,没有证据表明绿色投资与环境退化之间存在因果关系;然而,也发现了金融发展与环境污染之间存在双向因果关系。此外,还发现了从国民收入和能源消耗到环境退化的单向因果关系。基于这些发现,该研究建议应加强对绿色能源的投资,以帮助改善加纳的环境质量。此外,改善金融部门的发展是该国实现可持续发展目标的重要手段。