Methodology Of Visual Analysis Of Ningzhen Mountain Highway

With the rapid development of China’s economy and culture,the improvement of living standards has promoted people’s higher requirements for living environment and quality of life.People go to every place through the highway in all directions,but the consideration from the function point of view can not meet the needs of the road users.Related construction and planning department is more and more pay attention to the locations of the road and on both sides of the landscape quality,whether it’s developed areas or in remote areas,the visual effect of highway landscape gives the viewer’s first impression of cities and natural scenery,so in recent years,the evaluation of road landscape space and the visual characteristics of the research is becoming a hot spot of academic research in recent years.This paper systematically combs the research of highway visual landscape evaluation at home and abroad and collects different evaluation methods.In nanjing and zhenjiang in the middle of the town of mountain highway X103 and X303 and its surrounding environment as the research object,through the methods of quantitative analysis,field investigation,analysis of the driver’s visual characteristic,based on principles of scientific nature and operability,exploration,constructed based on the visibility and space to experience the two views of mountain highway visual landscape evaluation method.Based on CAD,Open Street Map,Arc GIS,Photoshop and other software and data platforms,a digital elevation model was constructed to evaluate the visibility and spatial perception of roads in Ningzhen Mountains.The landscape on both sides of the road is divided into three distance zones: near,middle and far.The viewable range and land type of the two mountain roads are analyzed,and the basic terrain slope and slope direction are analyzed.Then,the information of water bodies,hilltops and surface mines on both sides of the highway is counted,and the corresponding element elevation model is constructed.The range lines of these surface elements are converted into equidistant research samples,and the visual sensitivity of the highway to these landscape elements is analyzed and evaluated successively.Then the road was divided into positive and negative driving directions.Based on the field of view of human eyes when driving,skyline tool in Arc GIS was used to calculate the skyline plan of all viewpoints in the field of view of two different driving directions.Through the analysis of the skyline plan,the evaluation of the feeling of spatial openness and spatial hierarchy of the highway is obtained.By comprehensive analysis,the evaluation result of spatial feeling of Ningzhen mountain highway is obtained.Through field investigation,the method was verified to be scientific and the evaluation results were supplemented.According to the evaluation results,the internal relationship between visual sensitivity and spatial feeling of water bodies,hilltops and surface mines is obtained.High-quality landscape surfaces are selected,areas with better evaluation can be protected,and areas with lower evaluation can be restored or blocked first,so as to obtain the strategies and methods of landscape visual resource management within the research scope.Based on previous studies,this paper further explores the evaluation method of landscape visual spatial feeling.