| As the product of globalization and industrialization,the urban agglomeration is often the economic,scientific,and technological center of a country or region.With the intensification of international competition,the urban agglomeration has gradually become one of the important factors affecting the new round of international competition and comprehensive national strength.As one of the four Bay Area Urban Agglomerations in the world,Guangdong-Hong Kong-Macao Greater Greater Bay Area urban agglomeration plays an important role in China’s national development.Based on the internal and external perspectives of the city,according to the analysis idea of "Factor measurement-Identification of urban center structure and quantification of urban temporal and spatial evolution characteristics-Analysis of influencing factors-Put forward optimization suggestions",this paper uses the multi index and the multi model to identify the urban center structure of urban agglomeration in Guangdong-Hong Kong-Macao Greater Bay Area and measure its urban temporal and spatial evolution characteristics.To reveal the interaction relationship between population change,socioeconomic development,and land use of the urban agglomeration in Guangdong-Hong Kong-Macao Greater Bay Area.And we will put forward optimization suggestions for the development of the urban agglomeration in Guangdong-Hong Kong-Macao Greater Bay Area according to the research results.The main research contents and results of this paper are as follows:(1)This paper constructs the Main Center Score Index(MCSI),Mean Subcenter Score Index(MSSI),and use the existing Getis-Ord Gi* model,natural discontinuity method,and other models to identify the urban center structure of Guangdong-Hong Kong-Macao Greater Bay Area Urban Agglomeration.The results show that Guangzhou,Foshan,Zhaoqing,Huizhou,Dongguan,Shenzhen,Zhongshan,Jiangmen,Zhuhai and Hong Kong are multi-center urban spatial structures,and Macao is single-center urban spatial structure.Among them,the government-led spatial development model is the dominant factor affecting the urban spatial distribution of Guangzhou and Foshan.The administrative division system is the dominant factor affecting the urban spatial distribution of Dongguan and Zhongshan.Special economic zone policies and government industry guidance policies are the dominant factors affecting the urban spatial distribution of Shenzhen and Zhuhai.Geographical proximity,industrial transfer,and transportation infrastructure are the dominant factors affecting the urban spatial distribution of Huizhou,Jiangmen and Zhaoqing.Leading industries,urban planning concepts,and territorial space are the dominant factors affecting the urban spatial distribution of Macau and Hong Kong.(2)Combining kernel density analysis,Boyce-clarck shape index,16-azimuth equal fan,this paper measures the temporal and spatial evolution and influencing factors of urban construction land expansion form of urban agglomeration in Guangdong-Hong Kong-Macao Greater Bay Area.The results show that the hot spots of urban expansion in Guangzhou,Foshan,Dongguan,Shenzhen,Zhongshan,Huizhou,and Jiangmen from 1998 to 2019 are banded,and the hot spots of urban built-up land expansion are relatively stable.Affected by geographical proximity,industrial transfer,policies and other factors,the hot spot form of urban expansion in Hong Kong,Zhuhai,Macao,and Zhaoqing has changed.Hong Kong has changed from ring to fan,Zhuhai from strip to ring,Macao from strip to rhombus,and Zhaoqing from strip to the triangle.The spatial distribution of urban expansion hotspots in the Guangdong-Hong Kong-Macao Greater Bay Area urban agglomeration has a certain regularity.The expansion hotspots of Guangzhou,Foshan,Hong Kong,Huizhou,Zhaoqing,Jiangmen,and Zhongshan are concentrated in the adjacent areas between cities.Among them,policies and urban planning are the leading factors affecting the spatial distribution of urban expansion hotspots in Guangzhou,Foshan and Hong Kong.The expansion hotspots of Huizhou,Zhaoqing,Jiangmen,and Zhongshan are concentrated in the adjacent areas of economically developed cities,which are mainly affected by geographical proximity and industrial transfer.(3)Based on the improved gravity model and socioeconomic location degree model,this paper analyzes the temporal and spatial evolution of spatial correlation in the urban agglomeration in Guangdong-Hong Kong-Macao Greater Bay Area.From 1998 to 2019,the spatial correlation intensity of urban agglomeration in Guangdong-Hong Kong-Macao Greater Bay Area increased from 673.76 to 6803.74,showing a rapid growth trend.The spatial correlation structure of Guangdong-Hong Kong-Macao Bay area shows the characteristics of a double linkage radiation structure,and the dual nuclear radiation of Guangzhou,Foshan,Shenzhen,and Hong Kong is significant.In the past 20 years,the gap in correlation intensity between cities in the East and West banks of the Pearl River has narrowed from 16.24 times to1.93 times,and the degree of coordination is on the rise.The socioeconomic location degree of some cities in the urban agglomeration has a significant temporal and spatial evolution,and there is a "fault" in the socioeconomic location degree within the urban agglomeration.The two-level differentiation is obvious.The socioeconomic location degree of Zhaoqing,Macao and Zhuhai has been lower than 0.05 for a long time.(4)It is found that the "Industry-Population-Space-Policy" model dominated by economic development has a significant impact on the urban center structure and urban temporal and spatial evolution of the urban agglomeration in the Guangdong-Hong-Kong-Macao Greater Bay Area.Finally,according to the spatial differentiation characteristics of the urban center of Guangdong-Hong Kong-Macao Greater Bay Area urban agglomeration and the characteristics of urban temporal and spatial evolution,this paper puts forward optimization suggestions from the internal and external levels of the city. |
PDF Full Text Request