咸阳市城市地貌分析  

Analysis of Urban Landform in Xianyang City

作　　者：史兴民[1] 周峰[2] 薛亮[1] 封建民[2] 

机构地区：[1]陕西师范大学旅游与环境学院,陕西西安710062 [2]咸阳师范学院旅游与资源环境学院,陕西咸阳712000

出　　处：《水土保持通报》2012年第4期229-231,236,共4页Bulletin of Soil and Water Conservation

基　　金：国家自然科学基金项目"泾洛河流域河流阶地对气候与构造的响应"(40801008);中央高校基本科研业务费专项资金资助项目(GK201002017)

摘　　要：城市地貌决定着城市的布局和发展方向等方面。以咸阳市为例,对DEM数据进行分析,利用ArcGIS软件分析高程、坡度、坡向3个地貌要素。经过分析得出,咸阳市地貌类型包括河漫滩、一级阶地、二级阶地、三级阶地和黄土台塬,从渭河向两侧地势呈阶梯状抬升;咸阳市区绝大部分为平坡地(0°～5°),占总面积的83.6%;其次是缓坡地(5°～15°),占总面积的11.8%;其余坡地所占比例甚少。咸阳市区西南、南、东南3面坡向占总面积的60.8%,其中以东南坡向为主,占34.6%;而西北、北、东北3面坡向占总面积的18.9%。咸阳市沿着渭河东西发展,道路交通以及排水系统受阶梯地形影响很大。Urban landform is one of the basic geographic elements, which determine the formation of the city and the layout direction of development. In this study,Xianyang City was chosen as the study site. DEM data was analyzed and landform maps of elevation, slope and aspect were generated using ArcGIS software. The results indicate that the landform of the city was consisted of river floodplains, T1 terrace, T2 terrace, T3 ter- race and Loess Plateau, elevated from Weihe River. The terrain was dominantly flat （0~~5~） , accounting for 83.6~0 of the total area, with lands of gentle slope （5-15） accounting for 11.8, and a small portion land with steeper slopes. Approximately 61% of the total area faces southwest, south and southeast, and the southeast faced land accounted for 34.6%. The land facing northwest, north and northeast occupied approxi- mately 18.9% of the total area. The development of urban construction mainly occurred along the Weihe River and the transportation and drainage systems were influenced by the terrace landform.

关 键 词：城市地貌 坡度 坡向 

分 类 号：P931.91[天文地球—自然地理学]