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Greening the green transition: Why decarbonization-enabling sectors drive emission growth in China's light manufacturing

グリーン移行のグリーン化:中国軽工業における脱炭素化促進セクターが排出成長を促進する理由 (AI 翻訳)

Baocheng H, Bellaoulah M, Chiheb A, Jamil A, Clauvis NK, Bellaoulah H

Research Squareプレプリント2026-06-05#エネルギー転換Origin: CN
DOI: 10.21203/rs.3.rs-9922928/v1
原典: https://doi.org/10.21203/rs.3.rs-9922928/v1

🤖 gxceed AI 要約

日本語

中国沿岸8県の軽工業を対象に、バッテリー製造が排出増の89%を占めるグリーン転換パラドックスを発見。活動成長が主因、エネルギー強度改善が最大のオフセット。政策効果は不均一で2030年削減目標達成困難。脱炭素化促進セクターの区別が必要。

English

Using a unique panel of Chinese coastal provinces and light manufacturing subsectors, this study reveals a green transition paradox: battery manufacturing accounts for 88.9% of emission growth despite being essential for decarbonization. Activity growth is the main driver, while energy intensity improvements offset 72% of the effect. Policy effectiveness is heterogeneous, and integrated portfolios fall short of NDC targets. The study calls for differentiated carbon governance.

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

日本の軽工業やサプライチェーン脱炭素化においても、脱炭素化促進セクター(例:バッテリー製造)が排出増を引き起こすパラドックスは示唆に富む。日本のサプライチェーン排出量算定やScope 3戦略に応用可能。

In the global GX context

This paper highlights a critical challenge for industrial decarbonization globally: sectors enabling the green transition (like battery manufacturing) can themselves become significant emission sources. This has implications for climate disclosure frameworks (TCFD, ISSB) that require firms to account for supply chain emissions (Scope 3). Also relevant for policy design in industrializing economies.

👥 読者別の含意

🔬研究者:This paper provides a nuanced analysis of the emissions dynamics in light manufacturing, revealing the green transition paradox and the need for differentiated policies.

🏢実務担当者:Corporate sustainability teams can use the insights to assess supply chain emissions, particularly in battery-intensive value chains, and to anticipate regulatory trends.

🏛政策担当者:The findings underscore the importance of designing carbon governance that distinguishes between emissions from enabling vs. non-enabling sectors and the need for more ambitious policy portfolios.

📄 Abstract(原文)

<title>Abstract</title> <p>Light manufacturing plays a vital role in employment and consumer goods production across China’s coastal provinces, yet it accounts for an estimated 15–20% of industrial emissions and faces a fundamental tension between industrial expansion (SDG 9) and climate action (SDG 13). This study examines the drivers of carbon emissions, policy effectiveness, and abatement feasibility in this sector using a unique province-sector-month panel covering eight coastal provinces and eight light manufacturing subsectors from 2018 to 2022. Applying five integrated analytical methods, LMDI decomposition, Tapio decoupling, interrupted time series, threshold regression, and Monte Carlo simulation, we uncover a green transition paradox: battery manufacturing, the most essential subsector for downstream decarbonization through electric vehicles and renewable energy storage, alone accounts for 88.9% of cumulative emission growth. Activity growth emerges as the dominant driver (+ 4,946 cumulative), while energy intensity improvements provide the largest offset, absorbing 72% of the activity effect. Tapio analysis reveals episodic weak decoupling that repeatedly collapses into expansive coupling. Province-level interrupted time series models show significant heterogeneity, with Beijing achieving strong reductions while Tianjin exhibits carbon leakage. Threshold regression identifies a carbon intensity tipping point separating two distinct policy regimes, and Monte Carlo projections indicate that even an integrated policy portfolio achieves only − 26.0% reduction by 2030, falling short of targets aligned with China’s nationally determined contributions. These findings expose a substantial policy implementation gap and call for differentiated carbon governance that distinguishes emission-intensive production serving decarbonization objectives from that which does not. The results offer transferable lessons for other industrializing economies scaling decarbonization-enabling manufacturing.</p>

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