生物多様性保全政策は気候緩和シナリオの解空間を変える
Biodiversity conservation policies alter the solution space of climate mitigation scenarios (原題)
Steinhauser, Jan, Riahi, Keywan, Sengupta, Sreyam, Dietrich. Jan Philipp, Maczek, Florian, von Jeetze, Patrick, Fricko, Oliver, Sheng, Di, Humpenöder, Florian, Krey, Volker, Obersteiner, MIchael, Popp, Alexander
🤖 gxceed AI 要約
日本語
パリ協定目標達成には森林再生とBECCSが重要だが、大規模バイオマス生産は生物多様性と競合する。統合モデル分析により、保全目標と整合的な持続可能なバイオエネルギー潜在量は100EJ/年未満で、BECCSによる炭素除去は6GtCO2/年未満に制限される。一方、保全は森林炭素隔離を約2倍に高め、ピーク気温を最大0.2℃低下させるが、早期の厳格な脱炭素が必要。
English
This study uses an integrated modeling framework to explore synergies and trade-offs between biodiversity conservation and climate mitigation. It finds that sustainable bioenergy potential compatible with ambitious biodiversity targets is below 100 EJ/yr, limiting BECCS carbon removal to less than 6 GtCO2/yr in 2°C scenarios. However, ambitious conservation can double forest carbon sequestration and lower peak temperatures by up to 0.2°C, though requiring earlier and more stringent 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
日本では、生物多様性と気候変動のシナジーは「ネイチャーポジティブ」経営として注目され、SSBJ開示や統合報告書での情報開示が進む。本論文は、保全政策が脱炭素経路の実現可能性に与える影響を定量的に示し、企業の土地関連戦略や政策対応に示唆を与える。
In the global GX context
Globally, this research informs the integration of biodiversity and climate goals within frameworks like the Global Biodiversity Framework and climate pledges. It highlights the need for coordinated policy design to avoid unintended trade-offs, relevant for ISSB and TNFD reporting as companies assess nature-related risks and opportunities.
👥 読者別の含意
🔬研究者:Provides quantitative evidence on the interaction between biodiversity targets and climate mitigation pathways, useful for integrated assessment modeling.
🏢実務担当者:Highlights land-use and bioenergy constraints that could affect supply chains and carbon removal strategies.
🏛政策担当者:Demonstrates that ambitious biodiversity targets are compatible with Paris goals but require earlier decarbonization, informing policy sequencing.
📄 Abstract（原文）
Conserving biodiversity while mitigating climate change is one of the defining sustainability challenges of this century. Paris-aligned mitigation pathways rely heavily on forest restoration and bioenergy with carbon capture and storage (BECCS). While forest restoration can simultaneously enhance wildlife habitat and increase carbon sequestration, large-scale biomass production for BECCS may intensify land competition and conflict with biodiversity conservation goals. Here, we use an interlinked land-use (MAgPIE), energy (MESSAGEix), and climate (MAGICC) modeling framework to explore the synergies and trade-offs between biodiversity conservation and climate mitigation. We find that sustainable bioenergy potential compatible with ambitious biodiversity conservation targets is below 100 EJ/yr, limiting late-century carbon removal through BECCS in 2 °C scenarios to less than 6 GtCO₂/yr. At the same time, ambitious biodiversity conservation can approximately double carbon sequestration in forest systems. Our results show that Paris temperature goals remain achievable under ambitious biodiversity targets and that peak temperatures are lowered as much as 0.2°C compared to Paris-aligned scenarios without biodiversity targets, although doing so requires earlier and more stringent decarbonization.
🔗 Provenance — このレコードを発見したソース
- EarthArXiv https://eartharxiv.org/repository/object/14858/download/25829/first seen 2026-09-09 03:58:17 · last seen 2026-09-21 04:15:58
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