Birds of a Feather Flock Together: Environmental Policy Stringency and Emission Efficiency Convergence
類は友を呼ぶ：環境政策の厳格性と排出効率の収束 (AI 翻訳)
Md Rohidul Islam
🤖 gxceed AI 要約
日本語
本研究は、1990年から2023年までのOECD38カ国を対象に、環境政策の厳格性（EPS）がCO2排出効率の収束と関連するかを分析。データ包絡分析法（DEA）で排出効率を推定し、クラブ収束アルゴリズムで2つの収束クラブを特定。プロビットモデルによりEPSの1単位上昇が高効率クラブ所属確率を約62.4%ポイント高めることを示した。
English
This study examines the association between environmental policy stringency (EPS) and CO2 emission efficiency convergence across 38 OECD countries from 1990 to 2023. Using data envelopment analysis, a club convergence algorithm, and a probit model, it identifies two convergence clubs. A one-unit increase in EPS raises the probability of belonging to the top-performing club by approximately 62.4 percentage points, highlighting the role of stringent policies in narrowing efficiency gaps.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本のGX政策では、排出効率向上が重要な課題であり、本結果は政策の厳格性と効率改善の関連を示す点で示唆に富む。特に、エネルギー集約度が障壁となる点は、日本の産業構造を考慮した政策設計に有用。
In the global GX context
This paper provides cross-country empirical evidence linking environmental policy stringency to emission efficiency convergence, contributing to global debates on policy design for climate mitigation. The findings support the effectiveness of stringent policies, relevant to international frameworks like the Paris Agreement and national strategies.
👥 読者別の含意
🔬研究者:The methodological combination of DEA, club convergence, and probit analysis offers a robust framework for studying policy impacts on emission efficiency across countries.
🏢実務担当者:Policymakers and corporate strategists can use the evidence that stringent environmental policies strongly correlate with higher emission efficiency to justify regulatory measures.
🏛政策担当者:The 62.4 percentage point increase in probability of joining the high-efficiency club per EPS unit underscores the leverage of policy stringency in achieving climate goals.
📄 Abstract（原文）
Abstract Despite global efforts to mitigate climate change, disparities in CO2 emission efficiency persist.
Understanding these disparities and convergence trends is vital for effective climate policy. This
study examines whether environmental policy stringency (EPS) is associated with CO2 emission
efficiency convergence across 38 OECD countries from 1990 to 2023. Our empirical strategy
proceeds in three steps. First, we estimate CO2 emission efficiency performance using a directional
distance function within a non-radial Data Envelopment Analysis framework. Second, we apply
a club convergence algorithm to identify whether countries form distinct clubs converging toward
similar efficiency levels. Finally, we use a probit model to assess how EPS and other factors
are associated with convergence-club membership. Our results reveal two distinct convergence
clubs. Importantly, stricter environmental policies are strongly associated with higher emission
efficiency: a one-unit increase in the EPS index raises the probability that a country belongs to the
top-performing club by approximately 62.4 percentage points, whereas greater energy intensity
acts as a barrier to such progress. Overall, these results suggest that well-designed environmental
policies may help narrow efficiency gaps and support the achievement of global climate goals.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1088/2515-7620/ae7190first seen 2026-06-08 04:43:17
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