Modeling CO2 emissions in Malaysia: an application of Maki cointegration and wavelet coherence tests
2021
Zhang, Lingyun | Li, Zecheng | Kirikkaleli, Dervis | Adebayo, Tomiwa Sunday | Adeshola, Ibrahim | Akinsola, Gbenga Daniel
One of humanity’s most significant problems in the twenty-first century revolves around how to balance the mitigation of environmental pollution while achieving sustainable economic development. Despite increased awareness and dedication to climate change, the planet is still seeing a drastic decrease in the volume of pollutant emissions. This study explores the long-run and causal impact of economic growth, financial development, urbanization, and gross capital formation on Malaysia’s CO₂ emissions based on the STIRPAT framework. The current paper employs recently developed econometric techniques such as Maki co-integration, auto-regressive distribution lag (ARDL), fully modified OLS (FMOLS), dynamic ordinary least square (DOLS), and wavelet coherence and gradual shift causality tests to investigate these interconnections. The advantage of the gradual shift causality test is that it can capture the causality in the presence of a structural break(s). The findings from the Maki co-integration and ARDL bounds tests reveal evidence of cointegration among the variables. The ARDL test reveals that economic growth, gross capital formation, and urbanization exert a positive impact on CO₂ emissions. Furthermore, the wavelet coherence test reveals that there is a significant dependency between CO₂ emissions and economic growth, gross capital formation, and urbanization. The Toda Yamamoto and Gradual shift causality tests reveal that there is a (a) unidirectional causality from urbanization to CO₂ emissions, (b) unidirectional causality from economic growth to CO₂ emissions, and (c) unidirectional causality from gross capital formation to CO₂ emissions.
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