基于变异系数法的青海省明长城保存现状评估

he paper macroscopically attributed the factors affecting the safety occurrence of earthen ruins to inner and exterior geologic process, other natural actions and human activities, based on field investigation and statistical analysis of Qinghai Ming Great Wall ruins, where earthen ruins were centralized distributed. The paper also evaluated the preservation condition of earthen ruins by using indexes such as annual mean temperature, average annual rainfall, average annual evaporation, annual average wind speed, vegetation coverage, human activities and natural geologic hazard. To improve the precision of the evaluation, we endowed different weight for every index by means of the variation coefficient method. This kind of evaluation method could provide some helpful references for hierarchical protection and exhibition design of Qinghai Ming Great Wall.