中文摘要：

构建了包含企业、家庭和地方政府的三主体新经济地理学模型,并采用外围地区政府首先发起竞争的模式分析了集聚均衡格局的长期演化.分析发现：整合地方政府主体后,＂中心-外围＂集聚格局的长期均衡以＂条件支撑＂状态为主,即集聚均衡支撑与否,不仅取决于贸易自由度的高低,而且取决于外围地区政府实施的竞争政策能否超过某一＂门槛＂水平.这一＂门槛＂水平关于贸易自由度呈驼峰形（即倒＂U＂形）,贸易自由度处于较低或较高水平时,外围地区政府夺取中心地位的竞争＂门槛＂都相对较低,地方政府间的竞争更为激烈;同时,区域一体化加深将有利于外围地区实施夺取中心的竞争性策略.

英文摘要：

A three-agent new economic geography model was built which integrates household and entrepreneurs with local governments.The long-run equilibrium of core-periphery pattern was analyzed in the framework that peripheral government dominated the single stage game as a ＇aggressor＇.The result shows that,integrating local governments,the long-run equilibrium of＂core-periphery＂agglomeration pattern is mainly in a＂conditional sustainable＂state,that is whether the agglomeration equilibrium sustains not only depends on trade freedom,but whether the peripheral region government can carry out an above-threshold competition strategy.The＂threshold＂is hump-shaped（convert＂U＂shaped） on the trade freedom,which applies that the competition between local governments is more probably and fierce when the trade freedom is relatively low or high.The analysis also concludes that regional integration is helpful for the peripheral region to＂steal core＂.