QUANTITATIVE METHODS OF THE PATTERN OF URBAN EFFECT REGIONS——A CASE OF JIANGXI PROVINCE

As a research focus,in order to achieve the simplicity of the method and accuracy of the results,a great deal of research has been carried out.The problem can be solved by the spatial analysis function of Arcgis.Thanks to the help of Arcgis,according to the data of road network from 1997 to 2007 and 1 ∶250 000 basic geographic data,the division of the time-based area and the hinterland area of Jiangxi central cities were done by shortest time and Field-strength model.Some countermeasures and suggestions have been put forward:(1)The traffic conditions in Jiangxi Province have improved.(2)The road network is an important factor in the evolution of urban effect region.(3)The effect of traffic construction applicable to the principle of diminishing marginal utility.Increase traffic investment in backward areas contributes to the achievement of the regional fair.(4)In some cities,administrative divisions are very irregular,with significant differences between cities in the hinterland areas,the model of county governing by province will help to solve this problem.(5)It is reasonable of dividing the effect region of the same grade cities by shortest time.(6)The Field-strength model is suitable for different level cities to divide the hinterland region with the quality of the cities.