四川广元地质景观类型及其形成条件与综合评价

广元境内地质景观主要集中分布于四个区中,即广元区、剑门关区、唐家河区和七里峡区,以岩溶地貌、丹霞地貌、典型地质剖面和水体景观为主,具有独特性、典型性、科学性和系统性、浓厚的历史文化性等特征。受构造条件、成景地层和流水侵蚀作用方式不同的影响,广元区以岩溶地貌和水体景观为主,剑门关区以丹霞地貌为主,唐家河区以地质构造剖面和变质岩剖面为主,七里峡区以岩溶地貌为主。按资源价值、景点规模与组合、环境状况和旅游条件等对四个区的地质景观进行综合评价,认为目前广元区和剑门关区具备构建国家地质公园的基本条件,唐家河区和七里峡区具备构建中型省级地质公园的基本条件。 

Classification, cause and comprehensive evaluation of the geologic landscape of Guangyuan, in Sichuan

The geological landscape of Guangyuan is mainly located in the following four districts: Guangyuan,Jianmemguan,Tangjiahe and Qilixia.The dominate landscapes are karst landscape,Danxia landscape and typical geologic profile as well as water scene respectively,and the characteristics of the landscape are unique,typical,scientific,systematic,densely historical and cultured.Affected by different condition of structure,stratum of sight formation, erosion mode of running water,the geological landscape is quite different.The main landscape in Guangyuan district represents in the form of karst and water scene;Jianmemguan in the form of Danxia;Tangjiahe,a typical profile of geologic structure and metamorphic rock;Qilixia,mainly karst.Based on the value of its resource,the scale and combination of its scene,the status of its environment and the condition of its tourism,this paper synthetically evaluates the geological landscape of these four areas and considers that Guangyuan and Jianmemguan possess the basic condition for establishing national geo-park and similarly,Tangjiahe and Qilixia possess the basic condition for establishing provincial geo-park at present.