Beyond Green Growth: Evaluating the Biophysical Feasibility of Rail-Centric Transport Systems in the European Union
グリーン成長を超えて：EUにおける鉄道中心交通システムの生物物理的実現可能性の評価 (AI 翻訳)
Joan Enric Alcover Comas, Pau Martínez Marín, Roger Samsó, Jordi Solé
🤖 gxceed AI 要約
日本語
EUの2050年気候中立目標達成には、技術革新だけでなく需要抑制と構造転換が必要。本研究は統合評価モデルpymedeas2を用い、私的電動車中心の成長シナリオと鉄道シフト＋定常経済シナリオを比較。鉄道シフトにより最終エネルギー需要を68%削減し、リチウム需要を57%減らしつつ、総投資も7.27兆ドル削減できると示す。
English
This study uses the pymedeas2 integrated assessment model to compare technology-led green growth with a rail-centric sufficiency pathway for EU transport. Results show that electrifying private vehicles alone fails to meet climate targets, while shifting to rail and stabilizing the economy cuts final energy demand by 68%, lithium needs by 57%, and total investment by USD 7.27 trillion, achieving deeper emission reductions.
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
日本の交通部門脱炭素戦略（EV推進、鉄道既存インフラの活用）に示唆を与える。特に、需要側の効率化とインフラ投資の長期的コスト比較は、日本の国土計画やモビリティ政策に参考となる。
In the global GX context
This paper challenges the dominant green growth narrative in EU transport policy, offering a rigorous biophysical and economic comparison of electrification versus modal shift. It contributes to global debates on sufficiency, resource constraints, and infrastructure investment, relevant for ISSB-aligned transition planning and climate risk assessment.
👥 読者別の含意
🔬研究者:Provides a model-based framework for comparing technology-led vs. sufficiency-led transition pathways, with resource and cost implications.
🏢実務担当者:Highlights the long-term cost and resource advantages of rail investment, useful for corporate transition planning and infrastructure strategy.
🏛政策担当者:Offers evidence for shifting transport policy from growth-oriented electrification to demand-side measures and public infrastructure investment.
📄 Abstract（原文）
Achieving the European Union’s (EU-27) 2050 climate neutrality goal requires a drastic reduction in transport emissions. This study utilizes the pymedeas2 integrated assessment model to evaluate trade-offs between technology-led and structure-led transitions under both continuous growth and steady-state economic paradigms. Our results reveal that relying primarily on private vehicle electrification falls short of emission targets. The baseline REF-G scenario—following current institutional roadmaps centred on rapid technological substitution and sustained economic growth—maintains a high final energy demand and requires a cumulative extraction of 2.35 Mt of lithium by 2050, claiming nearly 6.4% of current global proven reserves solely for European mobility. Conversely, combining a modal shift toward electrified rail with macroeconomic stabilization (RAIL-SSE) reduces transport final energy demand by 68% relative to the projected 2024 peak and decreases lithium requirements by 57%. This sufficiency-driven pathway achieves the deepest absolute climate mitigation, dropping residual transport emissions to approximately 90 MtCO2/year. Furthermore, despite the front-loaded costs of rail expansion, RAIL-SSE emerges as the least capital-intensive pathway, requiring a total investment of USD 19.83 trillion—a systemic saving of USD 7.27 trillion relative to the REF-G baseline. We conclude that reaching absolute sustainability in the EU transport sector necessitates a policy shift away from resource-intensive green growth strategies toward demand sufficiency and durable public infrastructure.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.3390/su18147402first seen 2026-08-08 04:46:26
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