江苏省城镇体系空间结构的历史演变

Evolution of the Spatial Structure of the Urban System in Jiangsu

为了进一步探求城镇体系空间分布规律,本文以历史为主线,从城镇密度、中心城市和城镇体系的空间变化入手,探讨江苏城镇体系空间结构历史演化过程,得出以下结论:(1)江苏三大区域在城镇密度和城镇体系空间结构发展上呈现较大的差异;(2)苏北地区由四边形网格状结构转变为沿河道T形结构,苏中地区和苏南地区分别由线状结构演变为四边形网格状结构和六边形中心地结构;(3)中心城市在历史时期发生了由北向南的转移.同时也指出导致该地区空间结构及其演变差异的主要因素是区域经济条件、水文条件和交通条件等.

Based on the historical data, this paper explores its evolutional process of the spatial structure of the urban system with spatial variation in the density of cities, the central cities and the urban system in order to study the spatial distribution of the urban system. It draws some conclusions ： （ 1 ） There are great differences in the evolution of the density of cities and the spatial structure of the urban system in three areas of Jiangsu; （2） The spatial structure changes from the quadrilateral grid-like structure to a T-shaped one along the rivers in the northern Jiangsu, while it varied from the linear structure into the quadrilateral grid-like structure and the hexagonal structure in the central Jiangsu and the southern Jiangsu ; （3） The central cities shift from the north to the south in Jiangsu. At the same time it also points out that influential factors that result in the spatial structure and their evolutional diversity are regional economic conditions, hydrological conditions and traffic conditions etc.