三角洲顶点城市探讨

Primary Study on Apex City of Delta

文章将三角洲顶点这一流域地貌学中的概念引入经济地理研究之中,认为在三角洲经济区顶点区域产生的区域中心城市是三角洲的顶点城市。三角洲顶点城市的存在具有广泛性,通过对长江、珠江和韩江三角洲以及国外若干三角洲顶点城市的实证分析,总结出顶点城市的区位特点及其与区域双核结构模式的关系。顶点城市对应于三角洲顶点的区域中心城市,它与港口城市组成的双核结构是带动区域经济的强大发展轴,在流域空间结构中具有独特而重要的地位,主要意义体现在其作为流域下游交通汇聚点的枢纽位置上。

“Apex of delta” is a conception of drainage physiognomy. In this paper, it is introduced into the study of economic geography, hence central city which generated from the apex region of economic delta is entitled “apex city of delta”. This kind of cities is broad located on many deltas. Through the demonstrate study on the apex city of delta of Yangtze, Zhujiang, Hanjiang and some deltas overseas, the relations between the location characteristics of apex city and dual-nuclei structure is concluded. Apex city is corresponding to the regional central city of delta. The dual-nuclei structure which composed by apex city and port city is a strong growth axes to drive the regional economy. Apex city is unique and important in the drainage spatial structure and its main meaning is represented on the transportation hinge of downriver area, therefore, this conception is benefit to ascertain the functional orientation of apex city.