Technical System and Practical Cases of the Plant Disposal on the Top Surface of the Great Wall Heritage Site
The Great Wall is one of the national key protected cultural relics in China and a world-renowned cultural heritage.The protective repair of the Great Wall heritage site aims to repair the existing deterioration of the Great Wall and eradicate the structural safety risks with the goal of"minimum intervention",and"preservation of the original state".The plants on the top surface of the Great Wall heritage site are one of the factors leading to the occurrence and continuous deterioration of the Great Wall.But if large-scale indiscriminate removal is carried out,it may harm the body of the Great Wall heritage site.Therefore,there is still an academic controversy on how to scientifically dispose the plants on the top surface of the Great Wall heritage site.Taking Beijing Dazhuangke Great Wall heritage site as an example,preliminary field research has been completed,and the species and spatial distribution characteristics of the plants on the top surface of the Great Wall heritage have been clarified.Based on this,this paper analyzes the types and the mechanism of the structural defects of the Great Wall.According to the quantitative evaluation system of the plants on the top surface of the Great Wall heritage and the principles of the plant disposal,this paper further describes the key technology for the disposal of the remaining roots after removing the ground part of the plants on the top surface of the Great Wall heritage site,and clarifies the basic idea of using the transported soil deposits on the top surface of the Great Wall heritage,back-filling the original transported soil deposits stripped by repair in layers and the regenerated plants in the soil seed bank to form the"soft capping"protection.The research results provide a scientific basis for the restoration of the diseases of the Great Wall,the protection of the"soft capping"on the top surface of the Great Wall heritage,and the construction of the cultural landscape of the Great Wall.
landscape architectureheritage conservation of the Great Walldeterioration of the Great Wallprotection and restoration of the Great Wall Heritageplant landscape
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