中文摘要：

近十几年来国际法院和国际海洋法法庭涉及岛屿海洋划界的五个判决表明,岛屿在领海划界以及专属经济区和大陆架划界有不同的划界规则。相关司法实践揭示：当岛屿领海与大陆海岸领海发生重叠时,岛屿在划界中通常拥有全效力;在适用等距离/相关情况规则对专属经济区和大陆架进行划界时,岛屿可作为相关大陆海岸的一部分而成为临时等距离线的基点;岛屿自身也可以构成相关海岸而成为临时等距离线的基点;岛屿在海洋划界中的作用取决于诸多因素,包括岛屿的面积和重要性、岛屿的位置、相关的海岸地形等等。

英文摘要：

Five judgments concerning island maritime boundaries by International Court of Justice and In- ternational Tribunal for the Law of the Sea in the last decade reveal that there＇s a distinction between the roles of islands in in the delimitation of territorial sea and exclusive economic zone （EEZ） and the delimita- tion of Continental Shelf. Related judicial practice reveals that where the territorial sea of an island overlaps with that of a mainland coast, the island generally receives full effect in the delimitation. When the equidis- tanee/relevant circumstances method is applied to delimit the overlapping EEZ and continental shelf, islands may be selected as base points to construct a provisional equidistance line either as part of a main- land coast or an independent coast. The role of an island in maritime boundaries delimitation is determined by the size and the significance of the island, the location of the island and the coastal configuration, etc.