Research On Development And Spatial Organization Of Inner Mongolia Urbanization Based On Self-Organization Theory

Urbanization is a complex process, which is effected by the factors of natural, social and economic. The urbanization has the evolvement rule of"S"type, and rapid urbanization stage is commonly between 30 to 70 percent. However, critical value of urbanization (inflexion of S curve) is different because of the effect of nature, politics, economic, culture and system. Urbanization in Inner Mongolia is higher than national average level, and development and spatial organization has own rule. In this paper, evolvement and spatial organization of urbanization in Inner Mongolia are studied with temporal, spatial and grade structure by using three critical indexes of self-organization theory (1/? fluctuation, fractal theory and Zipf law). And sustainable development policies are proposed, which afford theoretical foundation to urban planning and regional coordination development of urbanization in Inner Mongolia. The conclusions as follows:(1)On time, process of urbanization in Inner Mongolia has the characteristic of temporal fractal and S curve. According to power spectral index of Inner Mongolia(β= 1.99<2), the process of urbanization has the characteristic of temporal fractal and generalized 1/ f noise. Hurst index (H=0.495<1/2) indicates that process of urbanization in Inner Mongolia has the character of anti-persistence and implicit periodic law. Logistic model of population urbanization indicates that evolvement of urbanization level in Inner Mongolia has the characteristic of implicit continuous S curve before and after 1980, and the whole process of urbanization submit boundary of 26.88～73.12 percent.(2)On space, spatial distribution of urbanization in Inner Mongolia has fractal character, and self-organization of urban system has optimal trend. Hu-Bao city as measure center, aggregation dimension are respectively 1.133 and 1.279, which indicates that urban system of Inner Mongolia has self-organization character of density attenuation around Hu-Bao city. And capacity dimension (D0=0.156) and information dimension(D1=0.150)also indicate that eighty nine towns, except Hulunbeier City, Tongliao city , Chifeng city and some parts of Xilinguole League, distribute around the center Hu-Bao city. Apparently, urban system of Inner Mongolia has the character of"two cores"center city. Cow-crow dimension (ρ= 0.966) is close to 1, which indicates that traffic network of twelve cities in Inner Mongolia develop, and the cities centralize on provincial highway.(3)On grade structure, rank-size dimension of population are between 1.036 and 1.069, economic-size dimension are between 0.094 and 1.152. Both of them fluctuates around 1, and indicate that urban system of Inner Mongolia is good in overall. According to first law of urban, S2 =1.49,S4 =0.56,S11 =0.68, urban system is not perfect and still in the initial stage of the development; According to centrality strength, centrality strengths of Hohhot and Baotou city are respectively 1.27 and 2.34, as the"regional central city". Chifeng city (0.26) and Keerqin district (0.25) are"regional sub-central city". Dongsheng district, Wuhai city, Linhe district, Wulanhaote city, Xilinhaote city, Hailaer district, Bayanhaote city and Jining district are as the"central city of local area", account for 66.7 percent of total cities; According to rationality of grade structure, entropies of population size have the trend of increasing first and then decrease from 2000 to 2005, and which reaches the biggest value 1.36 in 2001.In 2005, there are three especially big cities and two big cities, and medium-sized cities increased to five and small cities decreased to two. This makes the entropy increase first and then decrease, which accord to changing law of entropy.