The Asymmetric Effect of Income Inequality in Reducing Carbon Intensity: Does Institutional Quality Matter?

Öz

Increasing environmental degradation and income inequality, especially in developing countries, are the greatest threats to sustainability. Identifying the factors that exacerbate these two problems can help to contain the ecological and social aspects of sustainable development. Moreover, understanding the determinants of inequality and environmental degradation, as well as the interconnections between them, is crucial for policy development towards sustainability. The literature on the environment-inequality relationship suggests that there is both a feedback effect and an opportunity cost between them. As production levels rise, so too does the amount of carbon emitted into the atmosphere. However, the reduction in carbon intensity associated with increased efficiency and the utilisation of renewable energies has been overlooked by researchers. In this context, this study assesses the impact of income inequality on carbon intensity in Türkiye, considering the interrelationships with human development, foreign direct investment (FDI), renewable energy consumption and institutional quality. In the study, which encompasses the period 1990-2022, the augmented nonlinear ARDL method is employed to elucidate the asymmetric impact of income inequality. Empirical findings show that income inequality increases carbon intensity, while FDI, human development and renewable energy consumption decrease it. The effect of institutional quality is insignificant. These results suggest that efforts to reduce income inequality in Türkiye may also facilitate decarbonisation of the production process. The negligible impact of institutional quality indicators is presumed to be attributable to the fact that institutions in Türkiye have not yet attained the desired level of efficiency.

Anahtar Kelimeler

• Environmental degradation
• income inequality
• institutional quality
• renewable energy
• carbon intensity

Karbon Yoğunluğunu Azaltmada Gelir Eşitsizliğinin Asimetrik Etkisi: Kurumsal Kalite Önemli mi?

Öz

Özellikle gelişmekte olan ülkelerde artan çevresel bozulma ve gelir eşitsizliği sürdürülebilirliğin önündeki en büyük tehditlerdir. Bu iki sorunu derinleştiren etkenlerin tespit edilmesi sürdürülebilir kalkınmanın ekolojik ve sosyal yönünü kontrol altına almada yardımcı olabilmektedir. Ayrıca eşitsizlik ve çevresel bozulmanın belirleyicileri kadar aralarındaki bağın anlaşılması da sürdürülebilirliğin tesisine yönelik politika geliştirmede önem arz ermektedir. Çevre-eşitsizlik ilişkisini inceleyen literatür aralarında hem geri besleme etkisinin hem de fırsat maliyetinin bulunduğunu ileri sürmektedir. Üretim düzeyindeki artışla birlikte atmosfere salınan karbon miktarı da artmaktadır. Ancak verimlilik ve yenilenebilir enerji kullanımının artmasıyla üretimde karbon yoğunluğundaki azalma araştırmacıların gözünden kaçmıştır. Bu bağlamda bu çalışma Türkiye’de gelir eşitsizliğinin karbon yoğunluğunu azaltmadaki rolünü insani gelişme, doğrudan yabancı yatırımlar, yenilenebilir enerji tüketimi ve kurumsal kalite bağlamında değerlendirmektedir. 1990-2022 döneminin ele alındığı çalışmada gelir eşitsizliğinin asimetrik etkisini ortaya çıkarmak için genişletilmiş doğrusal olmayan ARDL yöntemine başvurulmuştur. Ampirik bulgular gelir eşitsizliğinin karbon yoğunluğunu arttırdığını, doğrudan yabancı yatırımlar, insani gelişme ve yenilenebilir enerji tüketiminin azalttığını, kurumsal kalitenin ise etkisinin anlamsız olduğunu göstermiştir. Bu sonuçlar Türkiye’de gelir eşitsizliğini azaltmaya yönelik girişimlerin aynı zamanda üretim sürecinin dekarbonize bir yapıya bürünmesine yardımcı olabileceğini ima etmektedir. Kurumsal kalite göstergelerinin etkisinin anlamsız olması Türkiye’de kurumların henüz arzu edilen etkinliğe kavuşamadığından kaynaklandığı düşünülmektedir.

Anahtar Kelimeler

• Çevresel bozulma
• gelir eşitsizliği
• kurumsal kalite
• yenilenebilir enerji
• karbon yoğunluğu

Kaynakça

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