Material and carbon implications of future mobility infrastructure expansion around the world
将来の世界のモビリティインフラ拡大に伴う材料および炭素の影響 (AI 翻訳)
Baumgart, André, Ünlü, Gamze, Grammer, Benedikt, Javaid, Aneeque, Maczek, Florian, Krausmann, Fridolin, Krey, Volker, Wiedenhofer, Dominik
🤖 gxceed AI 要約
日本語
世界のモビリティインフラ拡大に伴う資源消費と炭素排出を、高解像度データを用いて評価。需要対策を取らない場合、インフラストックは2060年までに2～3倍になり、累積排出量は10～20 GtCO2に達する。鉄道へのシフトは材料集約的で排出量が増加するが、需要削減とリサイクル・産業脱炭素化を組み合わせることで排出量を63%削減可能。これにより、運用排出量削減に必要な公共交通インフラ拡大による排出増加を相殺できる。
English
Using high-resolution data, this study assesses resource use and carbon emissions from global mobility infrastructure expansion. Without demand reduction, stocks could double or triple by 2060, with 10-20 GtCO2 cumulative emissions. A shift to rail increases embodied emissions due to carbon-intensive materials, but combining mobility reduction with recycling and industrial decarbonization cuts emissions by 63%, offsetting increases from public transport expansion.
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
日本のモビリティインフラは既に高密度だが、途上国での拡大がカーボンバジェットに与える影響は日本企業のサプライチェーン・排出権取引にも波及する。SSBJやGHG排出量報告の観点から、インフラ建設に伴うスコープ3排出の試算手法として参考になる。
In the global GX context
This paper is globally relevant for ISSB and TCFD frameworks, as it quantifies embodied emissions from infrastructure expansion, a critical but often overlooked part of Scope 3. It provides evidence for transition finance and green infrastructure planning, especially in the Global South.
👥 読者別の含意
🔬研究者:Provides a comprehensive global assessment of embodied emissions from mobility infrastructure, with quantified mitigation potentials for demand- and supply-side measures.
🏢実務担当者:Useful for infrastructure developers and construction firms to understand carbon hotspots in material procurement and to design circular economy strategies.
🏛政策担当者:Highlights the need for integrated demand management and industrial decarbonization in national infrastructure plans to align with Paris Agreement goals.
📄 Abstract（原文）
Global mobility infrastructure is expected to expand significantly, especially in the Global South, potentially requiring a substantial share of the remaining carbon budget. However, the resource use and carbon emissions associated with the anticipated expansion of roads, railways, and other mobility infrastructure, as well as the potential of mitigation measures, have so far not been explored systematically. Using high-resolution infrastructure and mobility data, we assess seven demand- and four supply-side circular economy and decarbonization measures aiming to mitigate resource use and associated embodied CO 2 emissions. We find that without demand reduction, infrastructure stocks could double or triple by 2060, with cumulative emissions reaching 10 to 20 GtCO 2 . We find that a global shift to rail would increase embodied emissions to 37 GtCO 2 due to carbon-intensive materials. Combining mobility reduction with enhanced recycling and industrial decarbonization can cut emissions by 63% while providing adequate global infrastructure. This would help to offset increases in emissions from public transport infrastructure expansion required to reduce operational emissions.
🔗 Provenance — このレコードを発見したソース
- Zenodo https://zenodo.org/records/21471554first seen 2026-07-22 04:11:46
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