Evolution of urban spatial morphology records the long-term development process of a city, which includes the role of internal regularity reflecting the effect of external society and system. The stage-based evolution process is not unrelated to the development stage of the city itself and such factors of the era as politics, economy, society and technology.
Taking Hefei as the case in this article, the author, based on relevant studies on spatial morphology of domestic and international cities, used a couple of methods such as element analysis and literature analysis to study the evolution and disappearing process of classic “sector” spatial morphology of a city, summarized the evolution characteristics of urban spatial morphology in different stages, analyzed in depth the evolution rules and dynamic mechanism, and explored how to build a spatial morphology mode for a “compact city” in the context of Chinese special urbanization. In addition, the author forecast the future evolution direction of Hefei’s spatial morphology with the support of“compact city”theory, and put forward effective recommendations and measures from four aspects, i.e. urban growth mode, urban external profile, urban internal spatial morphology and urban development mechanism.
Main research findings are described as below:
1.The author divided the evolution stages of Hefei’s urban spatial morphology. With population and economic growth as main bases and with reference to the scale indexes of the establish region, the author divided the evolution of Hefei’s urban spatial morphology into four stages: expansion growth period (1949-1989); rapid growth period (1990-1999); high-speed growth period (2000-2009); and optimized restructuring period (2010-Now) in a true and scientific manner through systematic analysis on several indexes such as population in previous years since liberation of Hefei, GDP, growth of the area of the established region, urban external morphology and critical historical events.
2. In view of sociopolitical background, economic foundation and construction status quo in each stage of urban development, the author summarized the evolution characteristics of urban spatial morphology in each stage systematically from several points of view. The author also described the evolution characteristics of urban spatial morphology in detail from three aspects, i.e. urban external profile, growth mode and internal function.
3. Through multi-disciplinary analysis focusing on the dynamic mechanism and from cross-discipline research viewpoints such as urban planning theory, urban sociology, urban economics and urban geography, the author summarized the driver factors and dynamic mechanism that dominated the evolution of urban spatial morphology in different periods in combination with a series of policies and regulations formulated by the state for economic growth and urban construction.
4. The paper focuses on multidisciplinary analysis in the respect of interdisciplinary study of urban planing theory, urban sociology, urban economics and urban geography to concern about interpretative research on urban space form. And the paper concludes driving factors and power mechanism dominant in urban space form evolution of Hefei from the four respects of theoretic guidance, industrial development, economic systems and government decisions in combination of series of policies and regulations and laws formulated in regard to economic development and urban construction of China.
5. The paper analyzes the main problems in the optimization and adjustment period of Hefei, and especially analyzes urban backgrounds such as social economic transition, population urbanization conversion and urban adjustment of regionalism in the stage. Then the paper particularly analyzes the actual problems and puts forward the solution---constructing “compact” urban space form in combination of its urban specificity on the basis of current situation of urban space form.
In a word, the paper takes Hefei as example, focuses on research on the construction process of “fan city”space form of Hefei, deconstruction process of “fan city”space form in the process of rapid urbanization, and reconstruction process of “compact” urban space form in the transition period. Furthermore, the paper enriches the cases of urban space form research to some extent, the results not only is in favor of guidance of future urban planing and development of Hefei, but also provides certain experience and reference for space form planing of other cities of the same types.