甘肃省漳县韩家沟一带地质遗迹景观特征及价值评价

VALUE ASSESSMENT OF GEOHERITAGE RESOURCES IN HANJIAGOU AREA OF ZHANGXIAN COUNTY,GANSU PROVINCE

甘肃省漳县韩家沟一带以丹霞地貌景观为代表的地质遗迹资源特征典型,类型丰富,极具地区代表性。本文在野外调查和地质遗迹特征分析的基础上将韩家沟一带主要地质遗迹划分为1大类、2类、3亚类,共计43处,并以此为基础对地质遗迹的价值进行了定性评价和定量评价,定性评价从地质遗迹的科学性、稀有性、完整性、观赏性、保存程度和可保护性等方面进行了分析;定量评价采用层次分析法按地质遗迹资源的条件指标和价值指标两个方面进行评价,通过加权处理,计算出主要地质遗迹的综合得分,确定地质遗迹的等级,共评价出国家级地质遗迹2处,省级地质遗迹41处。

The geoheritage resources represented by the Danxia landform in Hanjiagou of Zhangxian County,Gansu Province have typical characteristics,rich types and regional representation.On the basis of field investigation and analysis of the characteristics of geological heritage,this paper divides the main geological heritage in Hanjiagou area into 1 category,2 categories and 3 subcategories,totaling 43 sites,and based on this,the value of the geological heritage is qualitatively determined.Evaluation and quantitative evaluation.Qualitative evaluation analyzes the scientificity,rarity,integrity,ornamental value,preservation degree and protectability of geoheritage;The indicators are evaluated in two aspects.Through weighting,the comprehensive score of the main geological heritage is calculated and the grade of the geological heritage is determined.A total of 2 national-level geological heritage and 41 provincial-level geological heritage are evaluated.