河口港城腹地空间格局研究--以南通市为例

Spatial Pattern of Hinterland of Estuary Port City——A Case Study of Nantong City in Jiangsu Province

河口港城通常位于与其临近的江、海两类港城交汇处,描述了河口港城区位的特殊模式,界定了河口港城远域和近域腹地的类型划分,认为近域腹地在机制上是接受港城共同辐射所形成的。以长江典型河口港城南通及其港城体系为研究对象,建立港城潜能模型,借助GIS空间分析手段,研究其近域腹地的空间格局。结果表明,河口港城形似半岛区位,造成直接腹地局促、交叉腹地复杂的特殊局面,极易受相邻江海港城的空间竞争,区域效应较难凸显。因此,河口港城只有与临近江海港城形成较大的发展梯度,才能充分发挥区域的辐射效应。

Estuary port cities were usually located near the confluence between river port cities and sea pert cities. This paper described the spe- cial location pattern of the estuary port cities, defined the two styles as remote regional hinterland and near regional hinterland, and considerd that the latter was accepted the common radiations of the ports and cities. Taking Nantong port - city in Jiangsu Province as the empirical research, this paper established the port - city potential model to study its spatial pattern based on GIS spatial analysis methods. The resnlts showed that the peninsula shape location of the estuary port cities usually caused the special situation of narrow direct hinterlands and complex cross hinterlands. The port cities were highly vulnerable to the spatial competition of the adjacent river port cities and the sea ones, so the regional effects were more difficult promi- nent. Therefore, the pert cities only should form the larger development gradient to bring full play to the regional radiation effects.