国内地域が国全体の気候変動緩和目標に果たす貢献
Contribution of subnational regions to national climate change mitigation targets (原題)
Kei Gomi, Yuki Ochi, Keita Mochihara, Yuko Kanamori, Go Hibino
🤖 gxceed AI 要約
日本語
国全体の脱炭素目標を前提に、各地域に求められる緩和策と地域別エネルギー需給バランスを分析する手法を開発。全地域が同等の負担で国目標を達成するCN1と、各地域が自区域内で独立にカーボンニュートラルを目指すCN2の2シナリオを設定し、日本を対象に都道府県別のGHG排出・森林吸収・エネルギー収支を推計した。CN1では基準年比排出削減率が0〜24%と地域差が大きく、CN2では再エネ移転禁止により未利用ポテンシャルを抱える県と自区域内で達成困難な県が併存した。地域間連携の必要性を示す。
English
This study develops a method to allocate national decarbonization targets across subnational regions and estimate resulting regional energy balances and GHG emissions. Applied to Japan's 2050 carbon neutrality goal, two scenarios are compared: equal-stringency effort across all prefectures (CN1) and each prefecture achieving carbon neutrality independently (CN2). Under CN1, prefectural emission reductions range widely (0–24% vs. baseline); under CN2, with no interregional renewable transfers, some prefectures hold large unused renewable potential while others cannot reach neutrality within their borders, underscoring the need for interregional cooperation.
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
国・自治体の脱炭素計画策定や地域間連携の議論に直結し、自治体の長期目標設定や再エネ立地・送電網政策の参考値として日本のGX実務に有用。
In the global GX context
Adds subnational allocation methodology to global climate-target scholarship, relevant to jurisdictions translating national net-zero pledges into regional plans and to debates on burden-sharing and interregional energy cooperation.
👥 読者別の含意
🔬研究者:国目標を地域へ配分する際のシナリオ設計と需給・吸収の推計手法の参考になる。
🏢実務担当者:立地する自治体の脱炭素目標や再エネ調達可能性を把握する際の参照値として使える。
🏛政策担当者:都道府県別の目標配分と地域間連携・送電網整備の必要性を政策設計に反映できる。
📄 Abstract（原文）
This study developed a methodology for analyzing the mitigation measures expected of each region within a country, as well as the resulting regional energy supply–demand balances, given national decarbonization targets and assumed future energy system conditions. Using national-level values as an overarching framework, the method represents interregional energy flows and constructed two scenarios: (1) a scenario in which all regions make efforts of equal stringency to collectively achieve the national target (CN1) and (2) a scenario in which each region seeks to achieve carbon neutrality independently within its own jurisdiction (CN2). For each scenario, regional energy supply and demand, carbon absorption by forests, and greenhouse gas (GHG) emissions were calculated. The methodology was applied to Japan, treating the nation as a whole and its prefectures as regions, to estimate regional energy balances and GHG emissions under CN1 and CN2 in the context of Japan’s 2050 carbon neutrality target. Under CN1, prefectural GHG emissions relative to the baseline year ranged from 0% to 24%. Given that interregional transfers of renewable energy are prohibited under CN2, some prefectures retained substantial unused renewable energy potential, whereas many others were unable to achieve carbon neutrality within their own boundaries. These findings can support prefectural governments in formulating rational, long-term, and concrete targets by providing reference values for emission and absorption goals and for the specific measures required. The analysis also highlights the need for cooperation between regions where achieving carbon neutrality is relatively feasible and those where it is considerably more challenging.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1007/s11625-026-01906-9first seen 2026-10-24 04:40:00 · last seen 2026-11-03 04:40:49
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