| The Qian'an-Qianxi National Geopark has rich geological heritage resources, such as ancient strata, canyons, caves, faults and folds, in which the whole stratigraphic systems, such as Qianxi Group, Changcheng System and Ordovician section, play an important role. On the basis of detailed researches, the geological heritage resources are divided into four categories, i.e., geological heritage sites of stratigraphy, geomorphological heritages, structural geological heritages and fossil heritages. In evaluating geological heritages, the monomers or types of geological heritage resources are taken as the objects of evaluation, the value of resource factor and the external factors of resources are chosen as the layer of comprehensive evaluation of the geological heritage resources, and the value of resource, the characteristics of resource, the influence on resources and the environmental factors are selected as the project of evaluation. In the project of evaluation, 13 evaluation factors are determined through refinement, which are scientific value, the value of science education, the value of tourism development, aesthetic value, rarity and peculiar nature, vulnerability, scale, abundance, integrity, social awareness, social influence, ecological environment, and geological environment. Then the Analytic Hierarchy Process (AHP) method is employed to evaluate the value of geological heritage resources. The results have led the authors to reach the conclusion that the Qian'an-Qianxi National Geopark includes a world-class geological heritage, 10 national geological heritages, 15 provincial geological heritages and 17 local geological heritages. The results obtained by the authors can help understand the geological heritage resources in the Qian'an-Qianxi national geological park, and can also provide basis for the protection, development and utilization of geological heritages as well as the planning and management of the geopark. |