城市群内中心地的功能互补与等级有序的差异化发展——兼论京津冀多层次多中心城市体系的建构

Complementary Function and Orderly Differentiated Development for the Centers of the Urban Agglomeration

城市群由功能互补、等级有序和差异化发展的中心地整合在一起。城市作为区域经济的增长极,发展过程遵循地租衰减规则:资源在聚集收益不能抵补地租成本时,就会由靠近城市中心的区位向城市边缘迁移,城市规模开始扩大且彼此间的联系加强,腹地内开始出现多个次级中心,多层次的城市体系产生。区域发展的均衡理论和不均衡理论都为城市群的发展提供了支撑。伴随腹地内中心地的等级跃迁,进而会出现新的城市隆起。城市群中京津冀城市群打破行政区划限制构建起了协同发展平台,按照“分区+分步”发展秩序逐渐完善发展格局,石家庄市定位为京津冀城市群的第三极,在这种格局下唐山市发展成为京津东侧的增长点,宁安片区发展成为冀中地区连接石家庄市、雄安新区、衡水市和沧州市的重要节点。

Urban agglomeration is a system integrated by centers which have the characters of complementary functions,hierarchical order and differentiated development.As the regional economic growth pole,urban development process follows the attenuation rules of land rent,when gathered benefits is less than rent costs,resources will migrate from a location near the center of the city to the edge of the city,the city begins to expand its scale and the relationship between each other can be strengthened at the same time,multiple secondary centers will appear in the hinterland,multi-level urban system will be formed.The theory of regional balanced development and of regional unbalanced development provides support for the development of urban agglomeration.The development of urban agglomeration will accompany center grade transition in the hinterland,and then there will be a new city.Beijing-Tianjin-Hebei urban agglomeration breaks administrative division limit to build up a collaborative development platform,in accordance with the rule of“part by part+step by step”the development pattern will be improved gradually,Shijiazhuang city orients itself as the third pole of Beijing-Tianjin-Hebei urban agglomeration,under this pattern Tangshan city develops itself into the growth point on the east side of Beijing and Tianjin,Ning-An area will develop itself into the important connection node among Shijiazhuang city,Xiong’an new district,Hengshui city and Cangzhou city.