基于引力模型的江西城市空间格局研究

City Spatial Patterns in Jiangxi Province Based on Gravity Model

城市空间格局的分布特征反映城市之间的空间相互作用,影响着区域经济的发展。本研究结合百度网络信息流分析法,在引力模型、断裂点公式基础上,分析江西城市空间格局。研究发现:江西省城市分布"南松北紧",城市空间结构呈现"一核南北双中心"的格局,南昌的核心地位突显,其对周边县市的经济拉动作用与极化效应并存;大城市对中小城市的屏蔽效应明显;赣州作为赣南重要的中心城市,与南昌"南北呼应",推进江西发展,但与南昌经济联系略显疏远。因此,在确保南昌核心城市地位的同时,一方面,应加强中心城市的建设,发挥九江、赣州在区域经济发展中的作用;另一方面,在加强江西南北经济发展的同时,亦需要加强南北之间的沟通与联合,实现赣闽粤地区的大发展。

City spatial patterns, as a result of spatial interaction, affect the tendency of development of regions. Using information flow of cities of Baidu, combining with gravity model and breaking point for-mula to measure and analyze the spatial patterns of cities in Jiangxi Province. Results show that the dis-tribution of cities in the south of the province is in high density, however, it is low in the north. The structure of patterns of cities shows“one core city and two center cities” . The position of Nanchang is outstanding, having a great pushing effect on economic growth in proximity. The effects of shielding are clear in the province. The economic relationship between Ganzhou and Nanchang is not close, and the cities in the province now are in two different city groups. Furthermore, this paper deduces some en-lightening guidance and suggestions：more attention should be paid to the constructions of center cities to reduce the stress on core city;different cities should have different characteristic industry and put in dif-ferentiation stratagem.