东秦岭地貌形态等级体系的构建与空间特征分析  

Construction and spatial characteristic analysis about geomorphological-types hierarchical system of eastern Qinling Mountains

作　　者：刘恺云 查小春 张珊 Liu Kai-yun;Zha Xiao-chun;Zhang Shan(School of Geography and Tourism,Shaanxi Normal University,Xi'an 710062,China)

机构地区：[1]陕西师范大学地理科学与旅游学院,西安710062

出　　处：《兰州大学学报（自然科学版）》2021年第1期8-13,23,共7页Journal of Lanzhou University(Natural Sciences)

基　　金：国家科技基础资源调查专项(2017FY100905)。

摘　　要：利用分辨率为30 m的先进星载热发射和反射辐射仪全球数字高程模型数据,选取绝对高程、相对高程构建东秦岭高程形态等级体系;选取坡度、地形起伏度、地面粗糙度构建东秦岭起伏形态等级体系;采用GIS空间叠加法,构建东秦岭地貌形态等级体系,对东秦岭的地貌形态的空间特征进行分析.结果表明,东秦岭高程形态分为低山、低中山、中山、中高山、高山5类,起伏形态分为微起伏、小起伏、微中起伏、中起伏、微大起伏、大起伏6类;从东秦岭地貌形态等级体系提取出25种地貌形态,主要以微中起伏的低中山、中山为主,分别占全区面积的12.97%、12.05%;其中,以洛南-商州-丹凤-商南-郧西为界,可将东秦岭分为东、西两部分.Based on the advanced spaceborne thermal emission and reflection radiometer global digital elevation model data with a resolution of 30 m and by employment of the absolute elevation and relative elevation as the classifying metrics, an elevation hierarchical system was constructed, and with reference to slope, relief amplitude and surface roughness, a relief hierarchical system was also constructed. Based on the spatial overlay analysis algorithm, a geomorphological-type hierarchical system in the east Qinling Mountains was constructed and the features of the geomorphological types were analyzed. The study results showed that the elevation morphology of eastern Qinling Mountains was divided into 5 types, and the undulation morphology divided into 6 types respectively. 25 kinds of geomorphological types were obtained using the established geomorphological-type hierarchical system, of which, the low and medium elevation mountainous areas with small and medium undulation were widely distributed, covering12.97% and 12.05% of eastern Qinling Mountains. Eastern Qinling Mountains, bordered by LuonanShangzhou-Danfeng-Shangnan-Yunxi country, was divided into two sections.

关 键 词：先进星载热发射和反射辐射仪全球数字高程模型 地貌形态等级体系 空间特征 东秦岭 

分 类 号：P931[天文地球—自然地理学]