AN ANALYSIS OF CONNECTIVITY LEVEL AND THE LOSS OF CUT-OFF POINT OF DOMESTIC AIR NETWORK IN CHINA

摘要

As an important traffic infrastructure;;the airport is of great significance for local business andresidents. Airport is the air gateway;;the air network structured by node (Airport) and line (route)can be indicated the reachability between the city;;and reflected the social and economicconnectivity between the cities. So the connectivity level of the air network determines the airtransport services level. This paper analyze the domestic air network of China through using themethodology of social network analysis (SNA);;by calculating the indicators of density;;degreecentrality;;closeness centrality and intermediary centrality with data of all domestic routes in 2011.The paper expands the study on the indicator of cut off point is studied;;by calculating the total lossof every deleted airport. Some result will be obtained that the connectivity level of domestic routenetwork of China as a whole is relatively lower and the connectivity level between the eastern andwestern region is obviously different. There is also a characteristic network structure exiting insome particular regions of the west. In the meanwhile;;the result shows the whole network is highlyrelied on Beijing Capital Airport;;and invulnerability of network is weak. This study may be helpfulin policy decisions for airports’ networks development;;pointed out development direction fordifferent type of airports in China.