中国電力システムの急速な転換における環境シナジーとトレードオフ
Environmental synergies and trade-offs in the rapid transition of China's electricity system (原題)
Shuning Shi, Yinchen Liu, Kevin J.Gaston, Markus Mueller, Xiaoyu Yan
🤖 gxceed AI 要約
日本語
中国電力部門を対象に、空間明示型ライフサイクル評価で2050年までの2シナリオの環境影響を分析。GHGと粒子状物質は大幅に減少する一方、土地転換・淡水富栄養化・鉱物資源利用は増大するトレードオフを確認。土地・水影響は中国国内に集中し、鉱物影響は海外へ拡散することを示した。
English
A spatially explicit life-cycle assessment of China's power sector under two 2050 scenarios. GHG emissions fall sharply and PM formation drops 31-70%, but land transformation, freshwater eutrophication and mineral use rise as trade-offs. Land and water impacts concentrate in China while mineral impacts spread globally, reshaping provincial contributions.
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
再エネ大量導入に伴う非GHG環境影響とサプライチェーンの地理的シフトを示す点は、日本のGX推進・資源調達リスク・Scope 3評価を考える上で参考になる。
In the global GX context
Adds spatially resolved, supply-chain-aware evidence that decarbonisation pathways carry non-GHG trade-offs, relevant to ISSB/CSRD discussions on nature and resource dependencies beyond carbon.
👥 読者別の含意
🔬研究者:空間明示LCAで脱炭素経路の非GHGトレードオフを定量化する手法が参考になる。
🏢実務担当者:再エネ調達や脱炭素が土地・水・鉱物リスクを伴う点をサプライチェーン評価に反映できる。
🏛政策担当者:気候目標と広範な環境影響のバランス、技術・地域・国際サプライチェーンを跨ぐ政策調整の必要性を示す。
📄 Abstract（原文）
China's power sector is undergoing rapid decarbonisation while simultaneously expanding generation. Although the power sector's greenhouse gas (GHG) emission trajectories under various decarbonisation pathways have been extensively researched, other non-GHG environmental implications remain poorly investigated, particularly due to limited spatially resolved data to trace where the actual impact occurs globally. Therefore, this study employs a spatially explicit life cycle assessment method to evaluate the environmental synergies and trade-offs of China's power sector under two future scenarios in 2050. A comprehensive portfolio of provincial-level, technology-specific life cycle inventories for China's current and future power systems are compiled, incorporating country-specific supply chain processes for key materials. The results show substantial decreases in GHG Emissions, from 5.5 Gt CO 2 eq in 2020 to 3.2 and − 1.02 Gt CO 2 eq by 2050 under the two scenarios. Synergies are observed between GHG Emissions and Particulate Matter Formation, with the latter declining by 31–70% compared to 2020. However, these synergies are accompanied by significant environmental trade-offs, as Land Transformation, Freshwater Eutrophication and Mineral Resource Use increase significantly. Spatially, land and water related impacts are gradually concentrating in China, while mineral related impacts are increasingly spreading to other countries and regions. Provincial contributions to national total impacts are also significantly reshaped under future scenarios because different power system configurations redistribute the ultimate cause of environmental impacts. This study highlights the need for climate policies to balance climate targets with broader environmental considerations for sustainable decarbonisation and to coordinate tailored mitigation across technologies, provinces, and global supply chains to support a more equitable and just transition.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1016/j.apenergy.2026.129044first seen 2026-11-01 04:36:42 · last seen 2026-11-06 04:35:52
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