关键词: 新型城镇化, 街道（乡镇）尺度, 人地耦合, 人口城镇化, 土地城镇化, 异速增长, 异速标度, 协同演化, 广州市

Abstract:

With the rapid development of urbanization in China, the complicated growth between population and land use in urban areas has attracted increasing attention. Under the background of new urbanization, studying the relative growth relationship between the urbanization levels of these two elements of different dimension is beneficial to exploring both the degree of coordination and the driving force of the man-land coupling development. In this paper, we calculate the index of man-land coupling urbanization to identity four types of coupling on the street (township) scale, which is based on the Landsat time series images, the census and yearbook data in Guangzhou from 2000 to 2015; To further quantify the degree of coupling and analyze their spatial pattern, we developed the allometric growth model fitting the annual average growth rate of man and urbanized land for the four categories, including increasing and decreasing ratio of man and land, increasing ratio of man and decreasing ratio of land, decreasing ratio of man and increasing ratio of land. The new model can delineate the more significant allometric growth for the street (township) units of the different categories than that analysis for the whole area. The main results are as follows: (1) From 2000 to 2015, the coupling development population and land urbanization on the street (township) scale in Guangzhou shows obvious characteristics of three-tier spatial structure. The allometric growth models of four types of man-land coupling show three kinds of equations, including positive allometric, negative allometric and negative power-law, which proves that the classification of allometric growth is helpful to analyze the dynamics co-evolution of man-land urbanization; (2) The allometric growth patterns of the Guangzhou's circle structure reveal the man-land coupling's harmonious situation of urbanization. The core circle, inner circle and outer circle respectively presents the development of compact, intensive expansion, and extensive expansion. In addition, through the joint spatial analysis with the renovation and transformation in old urban areas, it indicates that the development of urban renewal has certain positive effects in Guangzhou. The core and inner circle have formed the harmonious growth development trend preliminarily. Nevertheless, the outer circle is obviously developing towards the accelerated expansion of population and land during the late period, which needs to be paid more attention to preventing the phenomenon that the suburbanization of the outer circle is transformed into extensive growth. To conclude, the research results can provide support for both the cognitive exploration of the new urbanization theory connotation and the empirical research of the Guangzhou case.

Key words: new-type urbanization, street(township) scale, man-land coupling, population urbanization, land urbanization, allometric growth, allometric scale, coordination, Guangzhou