Study On The Evolution Of Urban Spatial Form In The Main Uarea Of Kuqa City

The evolution of urban spatial form is the product of the change and extension of urban spatial form in the process of continuous development.The change of spatial form of ancient historical city is generally affected by politics,natural conditions,social economy and other factors,which is mainly reflected in the change of urban spatial layout and external form.Influenced by regional economic development,urban economic development and population migration,modern urban spatial form has formed certain urban spatial form expansion mode and spatial structure type.Located in the hinterland of xinjiang kuqa city,has a long history in the ancient times there is signs of human activity,from the initial settlement to the kuqa construction of city city,are the king of han period after qiuci kuqa city city,the tang dynasty the logic Lu Cheng,qing dynasty,modern kuqa county,the change of the kuqa city,urban space form also along with the development of the city has been changed.Especially in recent years,the city of kuqa high-speed economic development,especially since the founding of the city construction development too fast,the massive influx of population and urban main area of rapid expansion,lead to road congestion,kuqa city downtown area within the development of urban land in vulgar and the imbalance of the new resources of the old city,many of the "city disease" problem.Kuqa in 2012 were rated as "the national famous historical and cultural city",kuqa city "from county to city" in 2019,after five version of overall urban planning,causes the development of the urban space form is very important for the development of the city,so through the research of urban spatial form evolution since the kuqa city construction after guide rational development model of urban spatial form,promote the development of kuqa city scientific and reasonable.Taking the main urban area of Kuqa city as the research object and the historical development time of kuqa city construction as the axis,this paper divides the evolution of urban spatial form of the main urban area of Kuqa into three stages: ancient period,modern period and contemporary period for research and analysis.In kuqa evolution history of urban spatial morphology based on geography,from the structure of the urban space development type,the developing mode of the urban space form,dynamic mechanism of urban spatial form evolution and the reasonable mode of the urban space form four aspects to analyze the summary of kuqa,the main general characteristics and dynamic mechanism of urban spatial form evolution factors,and the status quo of the urban space morphology development of kuqa summarizes problems,put forward the corresponding development strategy,the development of the urban space form in kuqa city scientific and reasonable forecast.This paper mainly researches from the following aspects:Firstly,the author collates and analyzes the historical and geographical data of kuqa urban spatial form.Kuqa has a long history and is the birthplace of the colorful ancient "Qiuci culture".Rich in resources,it is the source of national energy projects,has convenient location advantages such as transportation,culture and economy,and is also the unique gathering place of ethnic minorities in southern Xinjiang.Second,the development process of Kuqa city since its construction is sorted out.The evolution process of urban spatial form of the main urban area of Kuqa is divided into three periods: ancient period,modern period and contemporary period,and the development of urban spatial form is divided in stages according to the characteristics of urban development process in each period.For the urban construction of kuqa’s main city in ancient times,it went from the original king’s capital yancheng to The ancient city of Kuqa in the Tang Dynasty to the old city of Kuqa in the Qing Dynasty.In modern times,the urban development of the main urban area of Kuqa is in the transitional stage from the ancient city to the modern city.The change of urban spatial form in the main urban area of Kuqa city in the contemporary period is divided into five stages: the stage of urban slow growth(1949 to 1958);The stage of urban leapfrog development(1958-1985);Rapid expansion phase(1985-2000);Continuous expansion phase(2000-2006);Stable development period(2006-2012);Integrated Development stage(2012-2019).Thirdly,based on the evolution of historical spatial form and modern urban spatial form,the urban spatial form in each period is summarized.The development mode of urban spatial form in ancient times is relatively single,which is manifested as the development mode of single center.In modern times,Kuqa city developed slowly on the whole,and the spatial form of the main urban area of Kuqa was dominated by the sprawl development mode.In this period,the old city of Qing Dynasty expanded freely,and the form mode of the cage appeared.Contemporary urban space form during the period of change is complicated,so according to the research needs,each version of the overall urban planning of kuqa city as a time node for analysis of urban spatial form evolution,and through the mathematical analysis of urban expansion,urban agglomeration further supplement this period-diffusion model for the spatial form of change: "enclave" model of development-twins development model-more than the core author development pattern.Generally speaking,the time stage of the evolution of kuqa urban spatial form is from ancient to modern to contemporary;The structure type of urban spatial development is the stage evolution from the single-core centralization development pattern--the group development pattern--the fusion development pattern;The development mode of urban space expansion is from centralized development stage of single center--independent development stage--centripetal growth stage--integration development stage of two cities--multi-center redevelopment stage.The evolution of kuqa’s urban spatial form is influenced by physical geography,social economy,religious culture,policy planning,regional conditions,facilities and transportation.Fourth,this paper analyzes the problems faced by the development of urban spatial form of Kuqa city at the present stage,and puts forward the strategies for the optimization of urban spatial form of Kuqa city,so as to provide scientific and reasonable Suggestions for the development of urban spatial form in the future.