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Journals / Uluslararası Yönetim İktisat ve İşletme Dergisi / 2026 / Cilt: 22 Sayı: 2

VALIDITY OF THE ENVIRONMENTAL KUZNETS CURVE IN OECD COUNTRIES: PANEL DATA ANALYSIS

OECD ÜLKELERİNDE ÇEVRESEL KUZNETS EĞRİSİ’NİN GEÇERLİLİĞİ: PANEL VERİ ANALİZİ

Bekir Umut Gündoğdu0009-0009-9819-6489
Özgür Bayram Soylu(KOCAELI UNIVERSITY, FACULTY OF ECONOMICS AND ADMINISTRATIVE SCIENCES, DEPARTMENT OF ECONOMICS, ECONOMICS PR.)0000-0002-5030-5924
Pages
588–608
Publication Date
2026-06-27
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The empirical findings reveal an inverted-N-shaped relationship between per capita income and emissions.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:This study examines the relationship between economic growth and environmental degradation in OECD countries within the framework of the Environmental Kuznets Curve (EKC) hypothesis.
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Key Findings & Data:Using panel data from 1990-2020, the relationships between GDP per capita and carbon dioxide emissions (CO₂) were using Fixed Effects (FE) and Random Effects (RE) models, with model selection performed using the Hausman test.
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Conclusion & Impact:The empirical findings reveal an inverted-N-shaped relationship between per capita income and emissions.
🔬Design:Modeling & Simulation
📍Scope:2020 Verileri
⚙️Variables:Çevresel Kuznets Eğrisi · OECD · panel veri analizi

Abstract

This study examines the relationship between economic growth and environmental degradation in OECD countries within the framework of the Environmental Kuznets Curve (EKC) hypothesis. Using panel data from 1990-2020, the relationships between GDP per capita and carbon dioxide emissions (CO₂) were using Fixed Effects (FE) and Random Effects (RE) models, with model selection performed using the Hausman test. The empirical findings reveal an inverted-N-shaped relationship between per capita income and emissions. Environmental degradation declinesat during the early stages of economic growth, increases at middle-income levels, but declines again at high-income levels. This result rejects the traditional inverted U-shaped relationship proposed by the Environmental Kuznets Curve between economic growth and environmental degradation, indicating that environmental improvement in OECD countries cannot be achieved solely through economic growth. The study emphasizes that environmental sustainability is only possible through active public and private sector policy interventions (investments in renewable energy, environmentally friendly technologies, and effective regulations). For policymakers, broad recommendations are offered to design economic growth in a way that is compatible with sustainability policies.

Özet

Bu çalışma, OECD ülkelerinde ekonomik büyüme ile çevresel bozulma arasındaki ilişkiyi Çevresel Kuznets Eğrisi (ÇKE) hipotezi çerçevesinde incelemektedir. 1990-2020 dönemine ait panel veriler kullanılarak kişi başına düşen GSYİH ve karbondioksit (CO₂) emisyonları arasındaki ilişki, Sabit Etkiler (FE) ve Rassal Etkiler (RE) modelleri ile analiz edilmiş olup model seçimi Hausman testi ile gerçekleşmiştir. Ampirik bulgular, gelir ve emisyonlar arasında ters-N şeklinde bir ilişki olduğunu ortaya koymuştur. Ekonomik büyümenin ilk aşamalarında çevresel bozulma azalırken, orta gelir seviyelerinde artış göstermekte; ancak yüksek gelir düzeylerinde yeniden düşüş eğilimine girmektedir. Bu sonuç, geleneksel Çevresel Kuznets Eğrisi’nin ekonomik büyüme ve çevresel bozulma arasındaki ilişkiyi açıkladığı ters-U biçimindeki ilişkiyi reddetmekte ve OECD ülkelerinde çevresel iyileşmenin yalnızca ekonomik gelişmeyle kendiliğinden sağlanamayacağını göstermektedir. Çalışma, çevresel sürdürülebilirliğin ancak aktif kamu ve özel kesim politika müdahaleleri (yenilenebilir enerji yatırımları, çevre dostu teknolojiler ve etkin düzenlemeler) ile mümkün olabileceğini vurgulamaktadır. Politika yapıcılar için, ekonomik büyüme stratejilerinin çevresel sürdürülebilirlik ilkeleriyle uyumlu şekilde tasarlanması gerektiğine dair öneriler sunulmaktadır.

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Cite This Article

Gündoğdu, B. U., Soylu, Ö. B. (2026). VALIDITY OF THE ENVIRONMENTAL KUZNETS CURVE IN OECD COUNTRIES: PANEL DATA ANALYSIS. Uluslararası Yönetim İktisat ve İşletme Dergisi, Cilt: 22 Sayı: 2, 588–608. https://doi.org/10.17130/ijmeb.1855616

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