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Testing the environmental Kuznets curve with structural breaks: the role of globalization, energy use, and regulatory quality in South Africa

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Abstract

This study uncovers the role of regulatory quality, energy use, and globalization in the conventional environmental Kuznets curve (EKC) for South Africa by incorporating structural breaks in the series based on quarterly frequency data between 1996:Q1 and 2016:Q4. Applying the autoregressive distributed lag (ARDL) model, we confirm a cointegration between the variables. The empirical results suggest the validity of the EKC hypothesis in South Africa. In addition, while energy use exerts positive pressure on ecological footprint, globalization and regulatory quality exert negative pressure on ecological footprint. However, the effect of globalization is weak in the long run while the effect of regulatory quality is weak in short run. The results further reveal that the structural break years are statistically insignificant. The causality result establishes a causal link flowing from all the variables to ecological footprint in the long run. In the short run, economic growth and energy use Granger-cause regulatory quality. Also, while energy use causes ecological footprint, globalization is a predictor of energy use. The policy implication of this study is that increasing the pace of globalization and strengthening regulatory quality are efficient strategies to improve environmental quality and sustain a stable EKC in South Africa.

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Data availability

The datasets generated and/or analyzed during the current study are available in the repositories:

- Ecological Footprint per capita is available at Global Footprint Network

- Globalization index is available at KOF Swiss Economic Institute via http://globalization.kof.ethz.ch/

- Regulatory Quality is available at World Development Indicators (WDI)/World - Bank Database

- GDP per capita is available at World Development Indicators database

- Energy use available at OECD database

Notes

  1. The results of the unit root tests are supported by the time-plots of the variables presented already in Fig. 1.

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Authors and Affiliations

  1. Department of Economics, Eastern Mediterranean University, Northern Cyprus, via Mersin 10, Turkey

    Hasan Güngör & Maryam Abu-Goodman

  2. Department of Economics, Adeyemi College of Education Ondo, Ondo, Ondo State, Nigeria

    Ifedolapo Olabisi Olanipekun

  3. Department of Business Education, Federal College of Education (Technical), Potiskum, Yobe State, Nigeria

    Ojonugwa Usman

Authors
  1. Hasan Güngör
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  2. Maryam Abu-Goodman
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  3. Ifedolapo Olabisi Olanipekun
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  4. Ojonugwa Usman
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Contributions

Maryam Abu-Goodman: data curation, writing—original draft, formal analysis, investigation. Ojonugwa Usman: conceptualization, formal analysis, investigation, methodology. Ifedolapo Olabisi Olanipekun: writing—original draft, writing—review and editing. Hasan Güngör: writing—original draft, supervision, validation, visualization.

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Correspondence to Maryam Abu-Goodman.

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Güngör, H., Abu-Goodman, M., Olanipekun, I.O. et al. Testing the environmental Kuznets curve with structural breaks: the role of globalization, energy use, and regulatory quality in South Africa. Environ Sci Pollut Res 28, 20772–20783 (2021). https://doi.org/10.1007/s11356-020-11843-4

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