基于1∶25万DEM昆明地区地貌形态特征分析  

Physiognomy Morphological Character Analysis Based on 1∶250000 DEM of Kunming Region

作　　者：王雷[1] 朱杰勇[1] 周燕[1] 

机构地区：[1]昆明理工大学国土资源工程学院,云南昆明650093

出　　处：《昆明理工大学学报（理工版）》2007年第1期6-9,14,共5页Journal of Kunming University of Science and Technology(Natural Science Edition)

摘　　要：地貌作为地理信息的重要贡献组成要素,它决定着自然地理单元的形成和地面物质与能量的再分配.该研究利用GIS图像处理技术方法,通过对昆明地区1∶25万数字高程模型数据进行处理,提取了研究区有关坡度、坡向、地形起伏度等的地貌特征要素,并进行定位表达与特征统计分析,结果获得了对本区地貌特征的定位与定量化的总体认识,为研究区的农业规划、水土流失、土壤侵蚀、地质灾害等研究提供了新的空间信息基础平台.As one of the most important contribution component factors of the geographic information, physiognomy determines the formation of physical geography units and the redistribution between ground materials and energy. Based on the data collection of 1： 250 000 DEM, Kunming region is taken as the study area and a use is made of GIS technology and the image process system methods to distill Kunming region＇s physiognomy morphological character elements such as elevation, slope and aspect. Then physiognomy morphological character data are analyzed by statistic method application. As a result, the integrated understanding on Kunming region＇s physiognomy morphological character of location and quantity is obtained. It also provides a new spatial information foundation platform for studying agricultural programs, soil erosion, and geological disasters and so on in this research area.

关 键 词：昆明地区 地貌形态 地理信息系统(GIS) 数字高程模型(DEM) 

分 类 号：P931[天文地球—自然地理学]