Study On The Urban Size Distribution And The Coordinate Relationship Between Population And Land In The Process Of Urbanization In Hebei Province

With the advance of urbanization, the expansion of urban population size and land size is the inevitable trend of urban development. At present, China has entered the stage of rapid development of urbanization, the city scale expanded rapidly, with the expanding of urban scale,Some questions continuously emerge: Urban sprawl, land configuration unreasonable, systematic and scientific is not strong in urban planning, agricultural land area is significantly reduced, etc. which need to decide what city size can make the urban population and land reach coordination state and the urban development achieve optimal results.Taking hebei province as an example, the rank-size rule is used to analyze the development laws of urban population and urban land of 33 cities in Hebei province, and then the shift-share model and combined with "standard of urban land classification and planning construction land"(GB50137-2011) are adopted to analyze the evolution law and the development direction of all kinds of urban construction land structure, finally through the allometric growth law and and urban land expansion parameters to analysis the coordinate relationship between urban population and land., the results of this analysis as the basis, puts forward suggestions for the development of the urban population and land in hebei province. The following conclusions are drawn:(1) Hebei urban system is not perfect and the primacy ratios is low, the two cities index in 2012 was 1.2,the four city index and eleven city index was only 0.5, far less than its fair value 1. Scale sequence structure is in a development period of transition from concentration to dispersion, in 2012, q for the population size is 0.81, q for the land size was 0.79, the first city development is insufficient in province, compared to other provinces, the size of the large cities is far from enough, its influence is still far from the ideal state; Small and medium-sized cities is the main power in the urbanization process in the province. Overall, the province has not yet formed an ideal scale sequence structure, still in the middle stage of development.(2) Each land use types, road square land and green land showed a significant supply effect, industrial land and storage land had a structure of damping form; from the spatial distribution, a group of county which economic develop better supply effect is stronger,such as Wu’an, the supply effect and crowding-out effect are strong with weak in other cities. Combined with the conditions exceeded "standards" for all types of land in various cities,there are many cities which land size for residential and public management and public service are beyond the “standard”,especially residential land of county-level cities is higher. The proportion of green land is not is not up to standard in addition to the few cities,like Chengde outside.(3) The land expansion rate of most cities in Hebei province is higher than population growth rate, and it is especially significant in recent years from the vertical perspective. the coefficient for allometric growth from 0.75 in 2000(power function) and 0.66(linear function), increased in 2012 0.87(power function) and 1.00(linear function), from negative allometric to positive allometric. From the horizontal perspective, the land expansion coefficients of nearly two-thirds of cities exceed the reasonable value and the expansion coefficients of prefecture-level cities are large. Except of few cities, the overall urban population density of Hebei province is low.