Urban Residential Land Prices Of Jiangsu Province Based On Spatial Interaction

In 2013, the central work conference of urbanization put forward the main task of promoting the urbanization of the population. The new urbanization strategy shows that urbanization is not just let the farmers go upstairs and change the identity, but let the farmers really afford to buy housing, stay calm in the city, and into it. In recent years, the central government issued a series of real estate market regulation policy, but the effect of prices control and market stabilization were not obvious in short time. Under this circumstance of the prices are generally higher than the bearing capacity of citizens, an accurate assessment of residential land prices, extruding real estate bubble effectively, is very important to the reasonable regulations of city housing prices. Generally speaking, in addition to land prices are affected by the local market environment, with the formation of the city circle and frequent information interaction between cities, the interactions between cities will have a certain extent effects on land prices. So, based on the perspective of spatial interaction, studying regional urban residential land prices have a good theoretical and practical significance.Based on the summary of the domestic and foreign research, we used the gravity model and potential model to explore the effect of the interaction between the cities to land prices. Through modification of the models, took the spatial interaction as an independent factor to analyze the changing relationship between the city total gravitational values, city potential values and the urban residential land prices respectively. Based on the urban residential land prices division system, clarified the characteristics of the urban residential prices space distribution, to provide theoretical and empirical basis for the regional urban land prices comparison and dynamic correction and regulation.The main conclusions of this paper are as follows:(1) Used different methods to modify the parameters of the models could improve the accuracy of the model evaluation.(2) With the increase of city total gravitational values, the increase of urban residential land prices gradually became small and shows a curve positive correlation. The city potential values and urban residential land prices showed a linear positive correlation. Generally speaking, this curve and linear relationships are relatively stable. On this basis, we can make reasonable adjustments of urban residential land prices to compensate the lack of consideration of regional factors.(3)Used the Ward method to divide the urban residential land prices level based on spatial interaction through two step cluster, had great similarity with the real distribution of urban residential prices. This not only showed this method has certain rationality, but also expand the idea of regional residential land prices system. The cities in different grades can be implemented the classification regulation policy and establish the average price of each grade, in order to avoid difference between the land prices and the actual values of the land which can lead to the extremes in some areas. What’s more, because the system is not immutable and frozen, it should be regularly updated to keep its timeliness.(4) The urban residential land prices of Nanjing had beyond the effects of spatial interaction on it, which appeared the residential land price deviation and the situation of high residential land prices in low level. Although the impact of city residential price factors are in many aspects, this deviation still should be taken seriously, let the price level reflects the differential benefit of the land and meet the actual level and development direction.