With the rapid development of domestic airport industry, the construction and operation scale of the major large-scale airports have ranked the top ones worldwide, but big gaps still exists compared to global air hubs. Study on route network from the perspective of the airport could provide theoretical support for the construction of air hubs; what's more, it is also the need for China to transit from big country to powerful country in civil aviation industry. This article chooses "Star-shaped route network" of a single airport as the object to establish a quantitative analysis indicator -abundance, by analyzing the major factors that influences the accessibility of airport route network. Finally, an example is proposed to further verify the reasonableness of the establishment of "abundance".
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