湖南省城市空间关联研究

An Analysis of the Spatial Relation of Cities in Hunan Province

文章从空间关联的角度出发,应用威尔逊模型、空间统计学意义上的空间关联模型以及非线性科学中的分形理论,对湖南省29个城市的空间联系进行了研究。首先采取威尔逊模型计算了各城市的交通吸引强度、人口吸引强度,发现城市之间的联系在交通与人口规模之间存在矛盾;进一步选取工业总产值、人均GDP两个指标,采用全局MoranI指数、局部G统计揭示各城市的空间关联程度及各城市的发展趋势、空间要素在各城市的集聚特征;最后,引入了分形理论中的空间分布的探讨方法,研究该省各城市在空间相互作用下的分布格局。

This paper analyzed the spatial relation among the cities in province Hunan. First,the paper figures out the intensity of interaction in traffic and population among cities in Hunan province based on Wilson model;Then from the result find out the conflict between the traffic and population; Second, the paper figures out the Moran I and G~* using the indices the gross products of industry and GDP to discover the spatial autocorrelation, which is used to find out the characters of the spatial cluster. MoranI can provide the general measure of the concentration of an attribute over space, G~* can be used to measure the extent to which a location is surrounded by a cluster of high or low values for the attribute under consideration. Third,the paper discussed the spatial correlation dimension of the two-size distribution in Hunan province based on the fractal theory,which can be used to analyze the spatial structure of urban system under the interaction. Based on these methods,the paper discusses the characters of the interaction, and found out some problems of the structure, so the cities in province Hunan should be paid more attention.