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在甘肃省公路自然区划研究基础上,根据地貌形态分类的指标和要素,结合公路建设对地貌形态的要求,提出了公路地貌形态的分类指标;利用ArcView GIS将分类指标图形化;经计算并调整确定甘肃省公路地貌形态的分类界线,进而编制出甘肃省公路地貌形态图。文中提出,在甘肃省渭河以南以山岭重丘区为主,其中长江流域多为山岭区;渭河以北至乌鞘岭以黄土丘陵为主,其中黄河以南多为重丘区,黄河以北多为微丘区;平原微丘区主要分布在内陆河流域,以祁连山东北、阿尔金山以北为主的大部分地区。
On the basis of the research on the highway natural division in Gansu Province, according to the indexes and elements of the classification of topography and the requirements of the highway construction on the topography, this paper puts forward the classification index of highway topography; using ArcView GIS to classify the classification index; after calculating and adjusting Determine the Gansu Province road topography of the classification boundaries, and then compiled Gansu Province road topography. In the article, it is proposed that the mountainous heavy hilly area in the south of Weihe River in Gansu Province is dominated by mountains and valleys. Among them, most of the Yangtze River valley is mountainous area; the north of Weihe River to Wushaoling is dominated by loess hilly area, Beiduo is a micro-mound area; plain micro-mound area is mainly distributed in the inland river basin, to the northeast Qilian Mountains, most of the northern Altun mountains.