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国際海運業へのGHG排出価格付けメカニズムの法的適用

Legal application of GHG emission pricing mechanisms to international shipping industry (原題)

Cheng Zhang, Yutong Lu

Humanities and Social Sciences Communications📚 査読済 / ジャーナル2026-07-06#炭素価格経営インパクト: 調達リスク対象セクター: transport
DOI: 10.1057/s41599-026-08226-4
原典: https://www.nature.com/articles/s41599-026-08226-4_reference.pdf
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🤖 gxceed AI 要約

日本語

国際海運はパリ協定の目標達成に重要であり、2024年からEU-ETSが適用される。本稿は、GHG排出価格付けメカニズムの国際海運への法的適用における課題を分析する。EU-ETSの域外適用やNZFとの二重規制、排出量取引の総量決定や責任主体の特定の困難さを指摘し、IMO主導の枠組みとCBDR原則の重要性を論じる。

English

This paper analyzes the legal application of GHG emission pricing mechanisms to international shipping, highlighting challenges such as EU-ETS extraterritoriality, double regulation with the IMO's Net-Zero Framework, and difficulties in determining emission caps and responsible entities. It argues for IMO leadership and adherence to CBDR-RC principles.

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

日本は海運大国であり、国際海運の炭素価格付けは日本企業のコストや競争力に直結する。SSBJ開示やGHG排出削減目標との整合性が求められる中、本稿の法的分析は政策対応や国際交渉の参考になる。

In the global GX context

As international shipping faces carbon pricing under EU-ETS and IMO's NZF, this paper provides a legal analysis relevant to global decarbonization policy. It informs discussions on aligning regional and international mechanisms, which is crucial for multinational corporations and policymakers.

👥 読者別の含意

🔬研究者:国際法と気候政策の交差点を研究する者にとって、EU-ETSとIMOの枠組みの法的整合性の分析が有用。

🏢実務担当者:海運業界のサステナビリティ担当者は、炭素価格の影響とコンプライアンス対応の示唆を得られる。

🏛政策担当者:規制当局は、域外適用や二重規制の問題を理解し、国際的な制度設計に貢献するための洞察を得られる。

📄 Abstract（原文）

The international shipping industry is critical to achieving the climate goals of the Paris Agreement. The Net-Zero Framework (NZF) adopted at the 83rd MEPC meeting includes carbon pricing mechanisms, and the EU Emission Trading System (EU-ETS) gradually covers the shipping industry starting from 2024. Greenhouse gas (GHG) emission pricing mechanism, as an important market tool to promote global GHG reduction, is extending from the level of national governance to the field of international shipping. There are many challenges in the legal application of the GHG emission pricing mechanisms to the international shipping industry. The unilateral expansion of the EU-ETS has led to disputes over extraterritorial jurisdiction. The implementation scope of NZF overlaps with that of EU-ETS, which may bring about problems of double regulation and double pricing. There is difficulty in determining the total volume of emission trading in shipping and the difficulty in identifying the responsible entities for trading. The GHG emission pricing mechanism in the shipping industry still faces the contradiction and coordination predicament between the principle of common but differentiated responsibilities and the principle of non-more favorable treatment. This article employs normative legal analysis and comparative methodology, explicitly adopting international law standards, including treaty interpretation under the Vienna Convention on the Law of Treaties, principles of state territoriality jurisdiction, flag state jurisdiction, port state jurisdiction, and state responsibility doctrines, as its analytical framework. Therefore, it is necessary to adhere to the leading position of IMO when building the GHG emission pricing mechanism in global shipping and achieve effective alignment between different instruments. CBDR-RC should also be adhered to by reasonably using GHG emission pricing revenues.

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