Reconstruction Of Silk Road With Remote Sensing And Ancient Maps And Its Analysis Of Geographical Characteristics

As an ancient east-west traffic artery,the ancient Silk Road is one of the most important trade lines in human history,leaving a large number of ancient cities,urns,cultural relics and historic sites,etc.,which has great academic research value.With the implementation and promotion of China's “One Belt,One Road” strategy,a deep understanding of the evolution history of the ancient Silk Road and its systematic research are also historical reflections on the relationship between man and land,natural environment and urban settlement along the ancient Silk Road.It is conducive to promoting economic cooperation between China and Central Asia,and providing basic support and decision-making basis for China to expand the Central Asian market and enhancing regional cooperation and development,and to lay a theoretical foundation for better building a new Silk Road economic belt..As the starting point of the northern road of the Desert Silk Road and the border town,Guazhou plays an important role in maintaining the economic relationship between the east and the west.The article takes the ancient road of Guazhou section of the ancient Silk Road as the research object,and studies two aspects: First,confirm the information along the line according to remote sensing image data,related literature data and field investigation data,and select the eastern part of the study area as the site extraction test.District,supervise and classify the study area and the test area,select the ratio of the perimeter of the map and the square root of the area to calculate the shape index of the ancient site,and combine the spectral feature classification results of the image to extract the information from the ancient site and interpret the ancient The distribution of the site,using the GIS method to map the ancient road route of the Guazhou section of the Silk Road with the ancient map as the base and the remote sensing image;the second is to analyze the geographical features of the restored ancient road,and select the slope,elevation,water system,etc.as the impact factor.The geographical characteristics of the Silk Road in the Guazhou section are analyzed by the gradient classification,the elevation profile,the remote sensing information and the DEM data.The geographical characteristics of the Guazhou section of the Silk Road are analyzed,and the heat transfer and heat transfer are based on the characteristics of the soil transformation to the consolidation soil.Based on poor permeability,the single-window algorithm is used to invert the temperature of the study area.Got the following results:1.The information extraction of ancient sites based on shape index is realized.The results show that the shape index of the map markers for construction is larger than the shape index of other maps,and the shape index of the map markers for construction is defined as the threshold of the shape index of other land types,and the maps of similar shapes are screened out.Reduce the number and scope of extraction of target sites,and improve the accuracy of the extraction of ancient sites and the efficiency of visual interpretation.2.Analyze the geographical features along the ancient road and verify that the restoration of the ancient road is accurate.The study area is located in the Hexi Corridor,a north-south long stripup plain,with most of the slopes undulating.By grading the slope of the ancient road,the results show that 70% of the slope is less than 5°,86% of the slope is less than 15°,and the slope of the restored ancient road is small;the stations along the line are mostly distributed at an altitude of 1100m~1300m,and the terrain is less undulating.The line is relatively flat.The water system in the study area was extracted by the combination of remote sensing information and DEM data.The results show that the distribution of the ancient station and the water system has a spatial relationship.3.The inversion of the temperature of the study area based on the single window algorithm is realized.The results show that under the condition of rising temperature in the study area,the surface temperature of the ancient road is lower than that of other areas in the study area,which is in line with the experimental expectation,which further confirms that the ancient road extraction is more accurate.Confirm that the article repainted the Silk Road Guazhou section in line with the historical trend.