区位模型在小城镇发展过程中的应用研究--以北京市大兴区为例

从大兴区14个乡镇的区位效应入手,分析小城镇体系(重点为卫星城)发展中存在的问题,提出相应的建议。依据区位理论,运用系统模型方法,将区位因素定量化,建立了区位优势度模型(包括经济吸引度模型和空间聚集度模型)和区位适宜度模型,对大兴区小城镇体系的区位状况进行分析并划分区位优势度等级,分析其区位适宜状况,判断其适宜度类型。研究结果证明该区位分析模型合理;黄村镇具有二级区位优势度,归于良好区位适宜类型,属于全面发展的综合型卫星城;亦庄镇具备一级区位优势度,归于基本适宜类型,属于特色卫星城。从而得出结论：区位模型可以对小城镇体系的区位优势和适宜程度进行定量评价。对卫星城和小城镇的持续发展提供发展定位和政策依据。

A case study on the application of location models for small town development of Daxing district Beijing

Based on location theory and system modelling methods, the location factors were quantified through establishing the location advantage models (including economic attraction model and spatial aggregation model) and location feasibility models. The location advantage grades and location feasibility types in Daxing district were classified according to the results of location models. The results indicated that Hangcun town had higher location advantage and the best feasibility. Yizhuang town obtained the best location advantage and the higher feasibility because of their different location conditions. The location model systems were appropriate, and the practical problems of the small town could be well explained by the grading system of location advantage and the classification system of location feasibility. The system was suitable to analysis the advantages and disadvantages of the small town, and could supply with the criterion and gist of the development trends.