| Many problems such as shortage of land,waste of resources,environmental pollution and traffic congestion have emerged in China during rapid urbanization,which makes it urgent for cities to achieve sustainable development.The compact city theory took shape in the middle and late last century in the West,and was gradually accepted and recognized by domestic scholars in this century.The concepts of high-density activities,mixed land use,and high-efficiency development promoted by compact cities are of great and far-reaching significance for the sustainable development of cities in China.Many problems such as shortage of land,waste of resources,environmental pollution and traffic congestion have emerged in China during rapid urbanization,which makes it urgent for cities to achieve sustainable development.The compact city theory took shape in the middle and late last century in the West,and was gradually accepted and recognized by domestic scholars in this century.The concepts of high-density activities,mixed land use,and high-efficiency development promoted by compact cities are of great and far-reaching significance for the sustainable development of cities in China.Through combing,analyzing and summarizing the relevant literature of compact cities at home and abroad,combined with the current status of domestic cities,this article condenses and summarizes the meaning of compact cities and divides them into four parts: one is higher city density,city density The upgrade means that the building density and population density in the unit area are climbing,so that the disorderly spread of the city is controlled,which is conducive to the protection of the natural environment outside the city and the development of the external space;the second is the mixed use of land,which means With "high efficiency and no waste",every inch of the city’s land is filled and excavated so that it can get the best value;the third is higher city operation efficiency.The construction of compact cities needs to improve city operation efficiency and seek The minimum cost of city operation is to seek the compactness of the best operation efficiency.The fourth is better city quality of life.In the final analysis,the main body of the city is people.How to improve the well-being and quality of life of residents in the city is one of the important connotations of compact cities.Hefei is the provincial capital of Anhui Province and an important node city in the Pan-Yangtze River Delta region.It plays an important role in connecting the east and the west.It analyzes and studies the dynamic evolution of Hefei ’s compactness and provides theoretical basis and data support for the realization of the city ’s compact development It also provides reference and reference for the compact development of other cities of the same size.In this paper,through the research and analysis of the concept and connotation of compact city,combined with the status quo of the development of Hefei city,the city form compactness,urban space compactness,urban development efficiency,urban life quality,urban compact development trend and urban development quality are selected6 A comprehensive evaluation index system was constructed by each of these indicators,which measured the compactness of Hefei from 2000 to 2018,and analyzed its dynamic changes.The results showed that the compactness of Hefei increased rapidly in the early stage,and the growth rate slowed down after 2009,but the overall still showed Upward trend.Only by fully analyzing and studying the impact mechanism of city compactness can an effective optimization strategy be put forward.According to various technical methods,through qualitative and quantitative analysis of the current conditions and development data of Hefei City,the two-dimensional area under urban expansion only affects the form compactness,and space compactness is the leading factor to improve compactness.Both the quality of life and the government’s regulation and guidance can promote a reasonable increase in compactness.Therefore,this paper puts forward optimization strategies such as determining reasonable city density zoning,TOD-oriented transportation organization,mixed-use land development model,and reasonable compact city development policy to promote the compact development of Hefei. |
