City Diplomacy as a Green Strategy? International Sister City Partnerships and Urban Decarbonization
都市外交はグリーン戦略となるか？国際姉妹都市提携と都市の脱炭素化 (AI 翻訳)
Fubin Luo, Zimeng Kong, Xinyu Wang, Can Zhang, Yunzheng Zhang
🤖 gxceed AI 要約
日本語
本研究は、2000〜2022年の中国296都市のパネルデータを用いて、国際姉妹都市提携（ISCP）が炭素排出に与える因果効果を検証した。操作変数法により、ISCPが脱炭素化を促進することを発見。そのメカニズムは主に実質的なグリーン技術革新（特許の質）を通じており、北側諸国との提携は効果的だが南側諸国との提携は限定的であることも明らかになった。
English
This study examines the causal impact of international sister city partnerships (ISCPs) on carbon emissions using a panel dataset of 296 Chinese cities from 2000-2022. Using a Bartik instrument, we find that ISCPs causally promote decarbonization, primarily through substantive green innovation (patent quality). Partnerships with the Global North are effective, while those with the Global South show limited impact, highlighting the role of absorptive capacity.
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
日本でも多くの自治体が姉妹都市提携を行っており、本研究成果は都市外交を脱炭素政策の一環として活用する可能性を示唆する。特に、SSBJ対応や地域GX推進において、国際ネットワークを通じた技術移転や知識共有の枠組みとして参照できる。
In the global GX context
The paper provides causal evidence that city diplomacy can serve as a decarbonization tool, relevant to global city networks like C40 and ICLEI. It underscores the importance of absorptive capacity and innovation quality, offering insights for ISSB and transition finance frameworks that increasingly recognize subnational climate action.
👥 読者別の含意
🔬研究者:Provides robust causal evidence on the role of international city networks in decarbonization, with mechanisms via green innovation and geopolitical divergence.
🏛政策担当者:Offers actionable recommendations: optimize city diplomacy structure, prioritize innovation quality, and target partnerships to high-carbon industrial regions with limited market channels.
📄 Abstract（原文）
ABSTRACT The establishment of international sister city partnerships (ISCPs) has expanded since the postwar era, developing from cultural exchanges into strategic diplomatic channels for sustainable development. While their socioeconomic benefits are well‐documented, their potential as instruments for global environmental governance and urban decarbonization remains underexplored. This study utilizes a panel dataset of 296 Chinese cities spanning the period 2000–2022 to empirically examine the impact of ISCPs on carbon emissions. Using a Bartik shift‐share instrument to address endogeneity, we find that ISCPs causally facilitate decarbonization. Mechanism tests reveal that this effect is primarily realized through green innovation, specifically via substantive technological breakthroughs, with a neutral aggregate impact on incremental green innovation. Notably, this neutrality masks a distinct geopolitical divergence: partnerships with the Global North significantly stimulate both substantive and incremental green innovation, whereas collaborations with the Global South fail to promote substantive technological breakthroughs and may temporarily constrain incremental green innovation. Furthermore, heterogeneity analyses reveal that the decarbonization effect is heavily contingent on high foreign direct investment and advanced economic development, underscoring the critical role of local absorptive capacity. Regional analysis further demonstrates that this impact is highly significant in Western China, highlighting the potential of city diplomacy as an institutional substitute for missing market channels for decarbonization. Based on these empirical findings, policymakers should optimize the structural layout of city diplomacy, prioritize substantive innovation quality over patent quantity, provide targeted subsidies to cross absorptive thresholds, and strategically direct sister city networks toward traditional industrial regions with high carbon footprints.
🔗 Provenance — このレコードを発見したソース
- crossref https://doi.org/10.1002/sd.71401first seen 2026-07-03 06:15:21
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gxceed は公開メタデータに基づく研究支援データセットです。要約・翻訳・解説は AI 支援で生成されています。 最終的な解釈・検証は利用者が原典資料に基づいて行うことを前提とします。