由于半个世纪前拍摄的早期航片保存了未受现代城市快速发展破坏的原始地表状态及古代遗迹景观，为考古学家从事考古挖掘、勘探与文物保护提供了许多珍贵的信息资料。中国学者在获悉美国国家档案馆解密中国大陆航片及卫星影像资料后采取紧急行动，2002年6月，第一批1.1万张珍贵 Since the early aerial photos taken half a century ago have preserved the original surface state and ancient relic landscape that were not damaged by the rapid development of modern cities, they provided precious information for archaeologists engaged in archeological excavations, exploration and preservation of cultural relics. Chinese scholars learned that the National Archives of the United States to decrypt aerial photos and satellite image data to take urgent action, in June 2002, the first batch of 11,000 precious