关键词：
ArcGIS9.3;DEM;坡度;坡向;城子乡
摘 要：
文章研究基于R2V和ArcGIS9.3软件,以赤峰市松山区城子乡1∶10000地形图为基础材料,通过R2V软件提取等高线,在ArcGIS软件里生成DEM及坡度、坡向图,经分析得出:这种方法制作DEM和坡度坡向图,设备简单,投入成本低,速度快,数据容易更新,但应注意制作过程中的精度和数据完整性;从DEM看出,城子乡地势总体西高东低,自东向西呈阶梯状地势逐渐升高;由坡度分析得知:城子乡15°以下土地主要分布于中东部地区,15°~25°土地主要分布于中西部地区,比较集中,城子乡25°以下土地面积33548hm2,占土地总面积的94%;由坡向分析得知:城子乡无坡向、东南、正南和西南坡向土地面积18787.8 hm2,占土地总面积的52.48%,其分布范围广,主要位于中东部地区。因此,适宜于开发为农业用地的潜力较大。
译 名：
Building and Slope-Aspect Analysis of DEM Based on ArcGIS 9.3
作 者：
ZHU Lei;QIN Fu-cang;SU Jiang;Inner Mongolia Agricultural University;Hohhot Land Resources Bureau;
关键词：
ArcGIS9.3;;DEM;;slope;;aspect;;chengzi township
摘 要：
Based on R2V and ArcGIS9.3, taking 1:10000 topographic map in Chengzi Township, Songshan District, Chifeng City as basic material, Building DEM and slope-aspect map, the analysis showed that: the method of building slope and aspect map was simple equipment, low cost, fast speed and updating data was easy, but attention should be paid to the accuracy and integrity of the data in the process of making; Analyzing from DEM, Cheng Zi Xiang was generally high in the west and low in the east, from east to west ladder-like terrain gradually increased; Analyzing from slope, land under 15° mainly distributed in the middle-east regions, land from15° to 25° mainly distributed in the central and western regions, area under 25° in Cheng Township was 33548hm2, Accounting for 94% of the land area; Analyzing from aspect, area of no slope, southeast, south and southwest was 18787.8hm2, Accounting for 52.48% of the land area, which mainly distributed in the area of middle-east regions. Therefore, land which was suitable for agriculture is potential.
