Research On The Morphological Characteristics And Causes Of Pinzijie Historic District In Foshan

Foshan is a historic city which has special spatial form,its form is formed from its spontaneous development and is continuously promoted by its industry and commerce,and its spatial texture presents as free-form type following the layout of its surrounding natural landscape elements.Compared with the most of the historic cities whose form were promoted by politics or military and present as axis and regular type,Foshan's form shows very different characteristic and type.Pinzijie historic district is the district that carries the core culture and development momentum of Foshan,it has accumulated rich form from the development of over 2000 years,and it is the important space media to research Foshan's historical development and characteristics of spatial form.Since 2007,the spatial form of the district has partially suffered destruction by "Three Old" Transformation policy which is the important development policy in the pearl river delta region.This shows the practical dilemma of the district' s morphological protection,lacking of attention and theoretical guidance.So it is urgent to take research on the district's form and then to guide its future morphological protection and development by applying appropriate theory and approachBasing on the above background,this paper adopts the historico-geographical approach of Conzenian school in urban morphology and takes the empirical research on Pinzijie historic district,it aims to apply and expand the theory of historico-geographical approach.By taking the research on the district's current form,this paper is expected to explore the district' s morphological characteristic and its cause and law,then provide the suggestions on the district' s future morphological development.The research conclusions can also be used in the other historic districts of Foshan and other similar cities in ChinaThe paper consists of four parts and eight chaptersThe first part corresponds to the first and second chapters,it is the theoretical basis of the research.Firstly,it states the background,purpose,and approaches of the research.Secondly,it summarizes the relevant existing research results and the research direction which can be expanded.Thirdly,it makes the brief summary on the core theory,effectiveness,applications and expansions in China of historico-geographical approach which the paper adopts,aiming to lay the foundation and direction for following researchThe second part corresponds to the third and fourth chapters,it shows the imagery interpretation of the district's form.Firstly,it states the background and basis of the district's morphological development from two levels of city and district.Then,it divides the district into multi-level morphological regions by using historico-geographical approach:the first level of morphological regions include three types of“Traditional morphological region","1949-1978 morphological region","Modern morphological region".By further subdivision,they include 6 different types of second-level morphological regions,16 types of three-level morphological units,and 26 types of four-level morphological unitsThe third part corresponds to the fifth,sixth,seventh chapters.It shows the summary and cause analysis of the district's morphological characteristics.Three chapters respectively correspond to three first-level morphological regions.In each chapter,the morphological characteristics of each morphological unit in first-level morphological region are studies in detail firstly.The summary of all morphological units' morphological characteristics in a comprehensive level is made secondly.The in-deep analysis of causes on the characteristics of morphological units' morphological elements is made lastly from four aspects:form shaper's influence and behavior results,productive forces'level and lifestyle,economic structure and land system,living needs and construction technology,and the four aspects present different characteristics according to different periods of urban developmentThe fourth part corresponds to the eighth chapter.It shows the summary of research conclusions and provides suggestions for the district' s future morphological development Firstly,it summarizes the district' s morphological characteristics:the form presents diachronic evolution and synchronic distribution,the land's form of same function presents a continuous cycle of evolution process.Secondly,it summarizes causes and development influence of the district's morphological characteristics:(1)The same influence factor has different influences on the same morphology element's characteristics in different periods,and each influence factor form different morphological characteristics due to their differences in different periods.(2)In the subsequent development period,the morphological characteristics which formed in the previous period would change under the influence of various forces,the balance of these forces is the basis which promotes the stability of morphological characteristics,but the balance of these forces can easily be broken by strong external forces.Lastly,basing on the above conclusions,the paper presents the thinking on the sustainable development of the district' s form,proposes the optimization suggestions on the district's protection boundaries from division results of morphological regions,offers the suggestions on morphological development and guidelines on morphological optimization and renewal for each morphological region.