都市農村統合はいかに炭素源・吸収源バランスを再形成するか：炭素オフセットに基づく分析が示す経路と規模効果
How Urban–Rural Integration Reshapes the Carbon Source‐Sink Balance: A Carbon Offset‐Based Analysis Revealing Pathways and Scale Effects (原題)
Yupeng Wei, Ziying Zou, Yuwei Zhang, Yani Deng, Tong Li, Xiaolu Zhou, Li Peng, C. H. Peng
🤖 gxceed AI 要約
日本語
中国335都市（2005–2020年）を対象に、都市農村統合（URI）が炭素収支に与える影響を炭素オフセット効果（COE）で分析。全国の炭素赤字は4.65Gtから9.5Gtへ拡大し、植生吸収によるオフセット率は21.98%から10.41%へ低下した。構造最適化経路より空間的圧迫経路が支配的で、統合度や都市規模が大きいほど負の影響は弱まる。地域統合が生態的共便益を自動的にもたらすという前提を覆す知見である。
English
Analyzing 335 Chinese cities (2005–2020), the study assesses how urban–rural integration (URI) reshapes the carbon source–sink balance via a carbon offset effect (COE) indicator. National carbon deficit widened from 4.65 to 9.5 Gt CO2, with vegetation offset share falling from 21.98% to 10.41%. A spatial squeeze pathway dominates over structural optimization, though negative effects weaken at higher integration levels and in larger cities. Findings challenge the assumption that regional integration inherently yields ecological co-benefits.
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
中国の都市圏・地域統合政策と炭素吸収源の関係を定量化した研究で、日本の国土計画や地域脱炭素（環境省の地域循環共生圏、都市と農山村の連携）を考える際の比較参照材料になる。SSBJや有報開示に直接資するものではないが、自治体の脱炭素計画や土地利用政策の立案に示唆を与える。
In the global GX context
Offers empirical evidence that regional integration policies can erode terrestrial carbon sinks, relevant to global debates on land-use planning and nature-based mitigation within net-zero strategies. It adds a spatial-planning lens to disclosure scholarship that typically focuses on corporate emissions rather than territorial carbon balances.
👥 読者別の含意
🔬研究者:都市化と炭素吸収源の相互作用を定量化する手法（COE指標、経路分解）は、土地利用・気候政策研究の参照枠になる。
🏢実務担当者:直接的な開示実務への示唆は乏しいが、サプライチェーン上流の土地利用変化リスクを考える際の背景知識になる。
🏛政策担当者:地域統合や都市計画が炭素吸収源を損なう可能性を踏まえ、空間計画に純炭素影響の視点を組み込む必要性を示す。
📄 Abstract（原文）
Abstract The transition toward carbon neutrality is critically shaped by the management of urban–rural interactions, yet the net carbon consequences of urban–rural integration (URI) remain poorly understood. We systematically assess how URI reshapes the carbon source‐sink balance via an integrated multi‐step analytical approach for 335 Chinese cities (2005–2020). We employ the carbon offset effect (COE)—the net balance between vegetation carbon sequestration (CS) and energy‐related emissions—as a key indicator. We reveal a persistent spatial mismatch between URI advancement and carbon sink capacity, with the national carbon deficit widening from 4.65 to 9.5 Gt CO 2 and the share of emissions offset by vegetation CS falling from 21.98% to 10.41%. Crucially, we identify two competing pathways: A structural optimization pathway associated with improved carbon outcomes, and a spatial squeeze pathway associated with degraded carbon outcomes. The spatial squeeze pathway dominates, as the standardized coefficient of land urbanization level ( β = −0.493) is 6.49 times larger in absolute magnitude than that of the structural optimization pathway ( β = 0.076). The negative association between URI and vegetation COE exhibits scale‐dependent heterogeneity, weakening at higher integration levels and in larger cities, while local synergies between development and carbon sinks are attainable in some key ecological function areas. Our findings reveal the complex relationship between urban–rural transitions and terrestrial carbon dynamics, challenging the assumption that regional integration inherently yields ecological co‐benefits. Incorporating a net carbon‐impact lens into spatial planning is essential to unlock the climate mitigation potential of urban–rural systems, a lesson critical for rapidly urbanizing regions globally.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1029/2026ef009375first seen 2026-10-25 04:48:44 · last seen 2026-11-06 05:03:23
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