中文摘要：

防空识别区是一种要求意图由领空外进入领空的民用飞行器进行自我识别，并可能对其采取空中交通管制的特殊区域。本文认为，国际法对于设立防空识别区存在消极条件或限制条件，系基于特定功能的有限管辖权之概念。因此，防空识别区的设立绝非对于公海以及专属经济区上方空间的占领，亦无排他性。既无排他性，不同国家防空识别区当然可以重叠。本文总结防空识别区的设置系植基于习惯国际法的自卫权，目的仅仅在于确保国防，可突破国家领空范围外而行使。对未经通报进入防空识别区的外国飞机采取查明与识别措施，为防御性的非武力作为，并非攻击，因此并不违反任何国际法相关规定。

英文摘要：

The Air Defense Identification Zone is a mechanism that requests the civil aircraft identifying itself before entering a specific territorial airspace. It is a special zone in which certain air traffic control measures may be adopted. This paper suggests that while considering the Air Defense Identification Zone, international law only provides partial jurisdiction for limited purposes. This means that the establishment of the Air Defense Identification Zone is not an occupation over the airspace upon High Seas or Exclusive Economic Zone. One cannot exclude the lawful usage from others. It is, therefore, reasonable that there are overlapping areas among the Air Defense Identification Zones established by different states. This paper concludes that the establishment of the Air Defense Identification Zone is based on the right of self-defense of customary international law, and the purpose of which is to ensure national defense. Therefore, it can be implemented beyond the scope of territorial airspace. Investigation and identification measures are imposed for those foreign aircraft who does not report before entering the Air Defense Identification Zone. It is a none-armed defense measure, therefore, does not violate any international law.