Carbon Sequestration Potential of Urban Green Infrastructure
都市緑地インフラの炭素隔離ポテンシャル (AI 翻訳)
Anjaly Jose
🤖 gxceed AI 要約
日本語
本論文は、熱帯メガシティ（ムンバイ、ジャカルタ、マニラ、サンパウロ、ラゴス）における5種類の都市緑地インフラ（都市林、街路樹、緑の屋根、バイオスウェイル、都市湿地）のライフサイクル炭素収支をレビュー。50年スパンでの分析の結果、都市林が最も高い正味炭素収支（322 t C ha⁻¹）を示す一方、広範な緑の屋根はほぼ中立からやや負の収支となることを明らかにした。都市固有のインベントリの重要性を強調。
English
This review synthesizes lifecycle carbon analyses of five urban green infrastructure typologies across five tropical megacities, applying a cradle-to-grave framework over 50 years. Urban forests show the highest net carbon balance (322 t C ha⁻¹), while extensive green roofs are near-neutral. Sequestration rates vary by a factor of two across cities, emphasizing the need for city-specific lifecycle inventories.
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
日本の都市政策においても、都市緑地の炭素隔離効果を評価する際にライフサイクル思考が重要であることを示唆。ただし、対象が熱帯地域であるため、温帯の日本では樹種や管理の違いを考慮する必要がある。
In the global GX context
This paper contributes to global GX discourse by providing a comparative lifecycle analysis of UGI in underrepresented tropical cities. Its methodology can inform urban carbon accounting in both developed and developing contexts, supporting evidence-based nature-based solutions for climate mitigation.
👥 読者別の含意
🔬研究者:Provides a comprehensive lifecycle carbon accounting framework and comparative data for urban green infrastructure researchers.
🏢実務担当者:Offers evidence that urban forests and bioswales are more effective than green roofs for carbon sequestration in tropical cities, guiding UGI investment decisions.
🏛政策担当者:Highlights the need for city-specific carbon inventories when planning urban greening initiatives to maximize climate benefits.
📄 Abstract（原文）
Urban green infrastructure (UGI) has gained recognition as a viable strategy for offsetting municipal carbon emissions, yet comprehensive lifecycle assessments remain scarce for cities in the Global South. This review synthesizes lifecycle carbon analyses of five UGI typologies urban forests, street trees, green roofs, bioswales, and urban wetlands across five tropical megacities: Mumbai, Jakarta, Manila, São Paulo, and Lagos. Drawing on 78 peer-reviewed studies published between 2010 and 2024, we applied a cradle-to-grave carbon accounting framework spanning a 50-year time horizon, incorporating IPCC AR6 emission factors for embodied carbon in construction materials, maintenance operations, and end-of-life disposal. Our results indicate that urban forests yield the highest net carbon balance (322 t C ha⁻¹ over 50 years), while extensive green roofs exhibit a near-neutral or slightly negative net balance (−1 t C ha⁻¹) when embodied carbon in substrate and waterproofing membranes is included. Cross-city comparisons reveal that sequestration rates vary by a factor of two, driven primarily by differences in species composition, precipitation regimes, and maintenance intensity. These findings underscore the need for city-specific lifecycle inventories when planning UGI investments and suggest that urban forests and bioswales should be prioritized over engineered systems in tropical contexts where land availability permits.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.5281/zenodo.20697311first seen 2026-06-18 05:19:51 · last seen 2026-06-18 05:28:33
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