Study On The Relations Of Urban Land Price And Rational Land Structural Based On The Space Syntax Analysis

With the development of society and economy, urban land scale expanded unceasingly, the expansion of urban land scale, on the one hand, put forward a challenge of cultivated land protection, on the other hand also made people have a reflection of whether the city internal land use be intensive and whether have a reasonable structure. Formation and development of urban land-use structure was affected by various geographic and human activities. When the effect intensity or effect time of various factors reached to a certain degree, land attributes made changes, then caused urban land use structure evoloved.Land price reflected a city's economic, political, social and cultural development level, its temporal and spatial variation was a important factor to guide urban land use structure evolution. Therefore quantitative analysis on land price and urban land use structure, could unlease urban land utilization benefits, realise proper redistribution of urban land use structure, and provide the basis for urban management and planning departments to formulate policies and references.The paper relied on the Natural Science Foundation Projects "Research on rational urban land-use scale based on the spatial and temporal variation of urban land price level" (from 2009 to 2011, NO.40871053.). Based on the location theory, graph theory and urban land-use structure theory etc., the paper introduced integration density of urban road network (short for "integration density"), by use of spss17.0 software, calculated land price, land use structure and integration density of Shijiazhuang City in 1998 and 2006, established coupling model between urban land price changes and land use structure evolution, reveal their relationships, and provided the basis for urban land price to fully exert adjustive function in urban land use structure.The main conclusions are as follows:(1) From 1998 to 2006, the commercial residential and industrial land prices of Shijiazhuang City continued rising, especially commercial land price increased obviously; in the percentage composition of various urban land use, the residence land increased greatly, commercial land expanded fastest and industrial land gradually withdrew urban center.(2) From the view of the correlation between urban land price and integration density, the increase of integration density brought on the increase of commercial, residential and industrial land price, and the correlation of land price and integration density was more closely. Especially the correlation coefficient between commercial land price and its integration density tended to increase obviously, and the correlation coefficient of overall integration density rose from 0.679 in 1998 to 0.891 in 2006, and the correlation coefficient of local integration density rose from 0.489 in 1998 to 0.712 in 2006; and the correlation between integration density and residential land price and industrial land price showed increasing trend.(3) From the view of the correlation between urban land use structure and integration density, the correlation between quantity and proportion of commercial land, residential and industrial land and overall integration density, local integration density also continued to improve, especially the correlation between commercial land and overall integration density rose of low correlation in 1998 to high correlation in 2006; its correlation with local integration density rose of low correlation in 1998 to high correlation in 2006, namely the change of integration density effected land use structure evolution; the correlation between residential land, industrial land and integration density presented more closely trend.(4) From 1998 to 2006, the rate of commercial land grew fast, growth rate reached to 161.65%, quantitatively analyze the relationship between commercial land price and land use structure evolution, its coupling model was,Y= 0.579X-1.043X2+2.191X3+31.713.(5) Affective mechanisms of urban land price on land use structure were as follows:land price adjust land use structure, land price lead land use structure evolution, the failure of land price regulation mechanism would cause urban land structure disorder.