目前分析一地區之航空網路或各城市對航線旅次多苯之方法大都以計量經濟模式 或趨勢分析方法個別作預測，鮮少將兩者視為一系統合併討論。本研究定義航線流量及網路 流量集中度之比率累計加總值並分析其與加總順序問的關係，繪出一離散圖形，再以一連續 函數逼近之，藉由校估函數係數，計算個別城市對流童與不同機場所形成的空間集中度之大 小。並以亞太地區十個國家之相對航線流亡及網路規模大小為例，以此範圍中之 45 條城市 對航線中的前十條航線流量做為參數校估依據，預測出個別城市對流量並與實際值加以比較 ；同時並對亞太地區以各國際機場為中心之航線所形成的網路規模作一集中度之探討，分析 此區域內客運量的分佈情形。

　　　　　Regional air traffic and city-pair route traffic are usually predicted, separatly, by econometric or trend analysis. Few studies investigated two types of traffic by viewing both as a system. This paper defines the maximum cumulative proportion of trips that are distributed to a set of routes as the index of cumulative route flow shares and the maximum cumulative proportion of trips that are linked to a set of nodes as the index of spatial concentration. The curves connecting the indexes of incremental routes and incremental nodes are plotted and approximated by Gompertz functions. Estimated paprameters of the Gompertz functions can be used to calculate the trafficflow of each air route and to evaluate the spatial concentration of air traffic in a region. The origin-destination data of air traffic among 10 Asia-Pacific cities in 1989 were examined in a case study. Compared with real values, the estimated results of calibrated model are found reasonable. The spatial concentration of air traffic in this region are also analyzed and discussed.