进入21世纪,以京津冀北地区为核心的环渤海地区正迅速成为我国第三个经济高速发展的城市群,而将大北京地区建成世界城市的说法也已深入人心。在经济全球化和城市群落化的时代,建立由多个机场组成的区域机场体系是构筑世界城市的重要物质基础。目前,京津冀北地区尚未形成布局合 In the 21st century, the Bohai Rim region centered on the northern part of Beijing, Tianjin and Hebei Province is rapidly becoming the third urban agglomeration with rapid economic development in China. It is also known that the Greater Beijing area has become a world city. In the era of economic globalization and urbanization, establishing a regional airport system composed of multiple airports is an important material basis for building a world city. At present, Beijing-Tianjin-Hebei region has not yet formed a layout together