中文摘要：

基于1995、2000和2003三个年份的航空客运统计数据，分析中国城际航空客流的结构，并以优势流（dominant flow）方法为主，辅以距离平方和聚类法，分析中国主要城市在国内客运航空网络中的层级及其变化。研究表明，通过航空客运方式产生的空间联系主要集中于东部地区，中部地区在航空网络的重要性方面落后于西部，北京、上海、广-深3个顶点组成全国航空网络的主干；从主导航空客流角度观察，自1995至2003年，一个高度集中的城市层级在3个全国性中心的控制下形成和发展，航空客运网络层级体系中的顶层结构业已清晰，而以下各层次的结构尚处于分化发展之中。

英文摘要：

The patterns of spatial interaction and hierarchical structure of Chinese cities have been both shaped by and reflected in the air traffic pattern as air transport industry developed rapidly since the 1990s. Air passenger linkages or traffic flows among cities are used as the basis for identifying hierarchical status of cities--a theme of long-standing concern for analysis in spatial organization. Three specific research areas are addressed in this paper. （1） the spatial structure of intercity air passenger flows; （2） the pattern and hierarchical standing of major Chinese cities in domestic passenger air transport-based spatial interaction; and （3） air passenger dominance and changing urban system structure. Fiftyseven major Chinese cities with scheduled passenger flights and substantial passenger turnovers are included in the study. Principle of dominant flow, or Nystuen-Dacey method, a- long with Hierarchical Cluster Analysis by squared Euclidean distance, is applied to intercity air passenger data of 1995, 2000, and 2003. This study reveals, first, that directional intercity air routes and interactions are strongly dominated by cities in the East, where the trio of Beijing, Shanghai and Guang- zhou-Shenzhen constitutes the backbone of the national air transport network. Cities in the Middle Region lag behind their counterparts in the other two regions in terms of air network importance. Second, measured by dominant （first-order） air passenger flows, a highly concentrated hierarchical system of passenger air transport and Spatial organization of cities has evolved in the form of the control of three top-ranked, national command and control centers from 1995 to 2003. Third, under the national hierarchy led by Beijing, Shanghai, and Guangzhou-Shenzhen, the regional and provincial significance of such cities as Chengdu, Xi＇an, Kunming, Xiamen and Urumqi is also evident. Fourth, it seems that the hierarchical nature of the patterns of intercity linkages is increasing. The expansion of China?