本文分析國際海洋法法庭（ITLOS）於2024年5月發布之第31號案諮詢意見，探討國家防止氣候變遷危害海洋環境之法律義務。該諮詢意見由小島國家氣候變遷與國際法委員會提出，由ITLOS確認人為溫室氣體排放構成《聯合國海洋法公約》下的「海洋環境污染」，各國有義務採取必要措施防止、減少和控制此類污染。本文首先介紹該諮詢意見背景及主要論點，分析ITLOS對於義務性質、海洋污染定義、具體措施等議題的解釋立場。研究發現，ITLOS雖然將相關義務定性為「行為義務」而非「結果義務」，但同時也確立國家對於..

This paper analyzes Advisory Opinion (Case No. 31) issued by the International Tribunal for the Law of the Sea (ITLOS) in May 2024, examining states’ legal obligations to prevent climate change-induced harm to the marine environment. The advisory opinion, requested by the Commission of Small Island States on Climate Change and International Law, confirms that greenhouse gas emissions constitute “pollution of the marine environment” under the United Nations Convention on the Law of the Sea, obligating states to take necessa..