中文摘要：

我国城市发展的实践揭示，绝大多数城市的行政中心所在区域不仅是政治中心，也是商业中心；行政中心迁移往往带来迁入地零售商业的爆发式增长，行政中心区位和迁移与城市商圈空间分布之间有看显著关联。文章通过动态模糊算法仿真分析发现：行政中心对其空间所在区域的商圈发展有积极的正向影响；行政中心空间区位迁移与城市商圈空间结构演化存在显著的空间耦合互动，即迁入区域的商圈发展将显著加速，特别是区域内新商圈成形将明显加速，对迁出区域商圈的影响则相对不明显；城市商圈空间分布发展显著变化。最后，以长沙市的经验数据验证了仿真模型的可靠性。

英文摘要：

The development of China＇s urban area shows that the administration centers in most cities are not only the politi- cal centers but also the business centers, relocation of administration will bring in explosive increase in retail industry, and the location and relocationof administration centers have obvious connection with the spatial distributionof city commercial circles. This paper uses dynamic fuzzy algorithm simulation model to illustrate the coupling interaction, between the location change of admin- istration center and the spatial structure of business areas. The simulation shows that once the administration center moves to a new district, either the old business area would be scaling up or new business areas would be arising soon, or both. And the spa- tial structure of business area system of the urban districts would change. But the development of business areas in the former ad- ministration center area would not be affected. And the spatial distributions of trade areas system would change after the relocation of the administration center. At last, the empirical data of Changsha confirm the results.