摘要
随着数字化高程模型(DEM)的运用越来越广泛,关于DEM的研究也越来越多。以凉水国家级自然保护区的地形数据作为源数据,通过不同的内插方法得到DEM数据,再对DEM数据提取地形因子坡度和坡向,对比分析不同的DEM内插方法对地形因子的影响。结果表明:在坡度小于24°时,不同的DEM内插方法对坡度具有显著的影响;而大于24°时不同的DEM内插方法不会对坡度产生显著影响。
Nowadays,with the wide use of the DEM, more and more research have been taken on the DEM. Taking topographic data of Liangshui National Nature Reserve as the source data, DEM data were obtained by different DEM interpolation methods; slope and aspect were extracted from DEM dat; effects of DEM interpolation methods on topographic factors were compared. Result shows that., different DEM interpolation methods have significant effects on slope while slope is less than 24° different DEM interpolation methods have no significant effect on slope while slope is more than 24°.
出处
《防护林科技》
2013年第6期21-23,共3页
Protection Forest Science and Technology
关键词
DEM
内插方法
坡度
坡向
DEM
interpolation methods
slope
aspect
