Under The Guide Of Shenmu County In Rhythmic Space Form Optimization Research

The loess hilly and gully region of northern Shaanxi is one of the most fragile areas in China,and the ecological constraint in the area is more than that in the general area.This paper chooses the Shenmu County in Yulin City of Shaanxi Province as the research object.Shenmu is a typical town with abundant resources in the loess hilly and gully region of northern Shaanxi.The economic development driven by coal resources makes the demand for space construction of Shenmu increasing,which leads to the construction of the county The state of the county,and even break through the basic terrain restrictions.This study refers to the "land-oriented" is to meet the basic needs of social development in Shenmu County under the premise of focusing on the city as a whole rather than a part of the local space boundary,spatial structure and spatial layout to achieve the intensive use of resources The First,in terms of spatial boundaries,ArcGIS is used to clarify the ecological constraints of the Shenmu County to define the maximum rigid limits of space expansion,and then simulate several spatial developments in this range,and select the most compact boundary as a section And the boundary of the land boundary is 0.40,which is 0.13 compared with the present situation.Secondly,in the spatial structure,the Depthmap spatial syntax is used to quantitatively analyze the existing problems of the existing structure,and the rational development of the spatial structure,And the integration of land-based structure is increased to 0.42,which is 0.04 higher than that of the present situation.Finally,in the spatial layout,ArcGIS is used to analyze the distribution density of the main land of the five types of cities,according to the degree of land dispersion,the degree of agglomeration and the degree of mixing The problem is oriented to optimize the spatial layout,and the site mix is 14%,which is 10% higher than the current situation.Based on the study of spatial boundary,spatial structure and spatial layout,the spatial distribution of Shenmu County,which is guided by the land,is reduced by 3.43 square kilometers compared with the existing master plan.The This shows that the border is compact,reasonable structure,mixed layout for the intensive use of land intensive effect.This paper studies the spatial form of Shenmu county by quantitative and qualitative method,and uses mathematical method to determine the spatial form under the guidance of the land.It aims to strengthen the scientific nature of the construction of the form of Shenmu county.This study has a strong practical value for the optimization of urban spatial form in the loess hilly and gully region of northern Shaanxi,and also provides some reference for the spatial development of towns in other ecologically fragile areas.