Decarbonization pathways of infrastructure material systems in the urban agglomeration on the west side of Taiwan straits
台湾海峡西側都市集積におけるインフラ材料システムの脱炭素経路 (AI 翻訳)
Lihong Zhao, Guochun Huang, Jiaying Cong, Lulu Song, Wei‐Qiang Chen
🤖 gxceed AI 要約
日本語
台湾海峡西側の9都市を対象に、インフラ材料のライフサイクル在庫・フロー・GHG排出量をIMAGINEモデルで定量化。材料需要は2036年にピークを迎え、循環経済シナリオで累積排出量を18%削減可能。特に「集中的利用」戦略が最大の削減効果を示し、需要側の循環性が重要であることを示唆。
English
This study quantifies life-cycle stocks, flows, and GHG emissions of seven bulk materials across nine cities in the urban agglomeration on the west side of Taiwan straits using the IMAGINE materials model. Material demand peaks in 2036, and a circular economy scenario reduces cumulative emissions by 18%. Intensive use offers greater mitigation potential than scrap recovery or lifetime extension, highlighting the importance of demand-side circularity for deep decarbonization.
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
日本の都市インフラの脱炭素化においても、材料ストックの飽和と需要側対策の重要性が示唆される。ただし、中国の急速な都市化を前提としたモデルであり、日本の成熟したインフラへの適用には調整が必要。
In the global GX context
This paper provides a quantitative framework for assessing infrastructure material decarbonization at the urban agglomeration scale, relevant for global carbon neutrality goals. The emphasis on demand-side circularity over end-of-life recycling offers insights for infrastructure policy in rapidly urbanizing regions worldwide.
👥 読者別の含意
🔬研究者:Provides a modeling approach (IMAGINE) for urban infrastructure material flow analysis and scenario comparison of circular economy strategies.
🏢実務担当者:Offers evidence that intensive use of materials yields higher emission reductions than recycling, informing corporate circular economy strategies.
🏛政策担当者:Highlights the need for differentiated circular economy policies targeting demand-side measures in urban infrastructure planning.
📄 Abstract（原文）
Abstract Rapid urbanization along the west side of Taiwan straits (WSS) has driven extensive infrastructure expansion and massive consumption of construction materials, raising urgent concerns over their environmental impacts and long-term sustainability. Yet, the carbon reduction potential embedded in infrastructure material metabolism at the urban agglomeration scale remains poorly quantified. This study applies the IMAGINE materials model to quantify the life-cycle stocks, flows, and greenhouse gas (GHG) emissions of seven bulk materials across nine cities in the urban agglomeration on the WSS from 2000 to 2060. Results show that total material stocks increased from 44.2 Mt in 2000–228.7 Mt in 2020, dominated by sand (∼60.2%), gravel (∼31.6%) and cement (∼6.3%). Logistic modeling reveals a clear saturation relationship between per capita infrastructure stocks and built-up area, with most cities expected to reach stock saturation between 2030 and 2045. Material demand is projected to peak at 287.8 Mt in 2036 before declining to 235.4 Mt by 2060. Scenario analysis shows that cumulative GHG emissions under the frozen progress scenario reach 30.4 Mt CO ₂ e by 2060, whereas the circular economy (CE) scenario can reduce emissions by 5.5 Mt CO ₂ e (∼18%). Among the three CE strategies, intensive use (∼12.2%) offered significantly greater cumulative mitigation potential from 2021 to 2060 than improved scrap recovery (∼0.9%) and lifetime extension (∼5.0%). These findings reveal a regional transition from infrastructure expansion to stock optimization and highlight that deep decarbonization depends on demand-side circularity rather than end-of-life recycling. The study provides quantitative evidence and policy insights for formulating differentiated CE strategies to advance China’s carbon neutrality goals in rapidly urbanizing regions.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1088/2634-4505/ae5e04first seen 2026-05-05 19:12:30
gxceed は公開メタデータに基づく研究支援データセットです。要約・翻訳・解説は AI 支援で生成されています。 最終的な解釈・検証は利用者が原典資料に基づいて行うことを前提とします。