Study On Spatial Morphological Evolution Characteristics And Causes Of Capital Sites In Bohai State

As an important component of historical and cultural heritage,the urban space form of ancient capital can reflect the accumulation of national history and culture.The change of capital site reflects the development of national politics,military,economy,society and culture.Bohai has been in existence for 229 years and has been in existence for 15 generations,and its territory is constantly changing.During this period,it was the capital of the Bohai State for four times.The site of the capital of the Bohai State bears rich historical and cultural information,which is a masterpiece of the urban construction of the northern minority regime.The planning and construction reflects the essence and achievements of China’s traditional state management system.This thesis is based on historical geography,landscape architecture,urban morphology,cultural ecology,spatial statistics and other multidisciplinary research theories.Using historical data analysis method to clarify the beginning and end of the evolution of the capital of Bohai State,comprehensively collect and sort out the historical data related to the relocation of the capital of Bohai State,so as to construct and outline the historical context involved in the evolution of the capital of Bohai State.Based on the theory of historical geography,this paper studies the influencing factors of the location of the capital of Bohai State.In terms of physical geography,it is affected by geographical location,landform,hydrology,climate and traffic conditions.In economy,it is influenced by the way of production and life.The spatial statistical analysis method is used to verify the correlation between the site selection of bohai capital and the surrounding ancient city sites,and it is revealed that the spatial distribution pattern of ancient city sites is clustered and distributed with capital sites as the core,and the site selection of Bohai capital is superior and representative.Based on the dynamic analysis of the spatial morphology of capital sites in each historical period of Bohai State by using morphological analysis method,four important stages of startup,renovation,finalize and prosperity are sorted out,and the specific characteristics of spatial morphology evolution of capital sites in bohai State in each stage are analyzed.In the heyday,bohai capital city site was finally formed with orderly street system,closed inner square space,distinctive garden layout and perfect urban defense system.Through the study of the spatial morphological characteristics of the capital of Bohai,the paper finds out the rules and tracks of spatial evolution,and summarizes the main causes of the spatial morphological evolution of the capital site.The spatial evolution of the capital site of Bohai State is continuous.The evolution trajectory mainly includes the characteristic evolution of four elements of spatial form frame,core,axis and group.The spatial evolution trajectory of Bohai State has the characteristics of integrity,stage and sociality.The evolution of the spatial form of capital sites is mainly the result of political,cultural,social,economic and natural driving forces.From a multidisciplinary perspective,the study of the spatial evolution characteristics of bohai capital has important theoretical and heritage value and certain cultural and economic value,which can further confirm the important role of bohai capital site in the historical and cultural development of China.The capital planning of Bohai State is of great theoretical significance to modern urban design.