CAJ | 학술논문

解决基于中低分辨率遥感源DEM ( Digital Elevation Model)提取坡度数据的尺度效应问题,是流域水文分析与区域土壤侵蚀模拟等研究领域的迫切需要。选取延河流域为研究区,基于GDEM(Global Digital Elevation Model)与SRTM (Shuttle Radar Topography Mission)提取的坡度数据,参照基于1：50,000地形图的10 m分辨率坡度数据,根据直方图匹配原理,构建坡度降尺度变换模型,进行降尺度变换,得到延河流域更高质量的、可公开使用的坡度数据和一套对中低分辨率坡度数据降尺度变换的有效方法。
해결기우중저분변솔요감원DEM ( Digital Elevation Model)제취파도수거적척도효응문제,시류역수문분석여구역토양침식모의등연구영역적박절수요。선취연하류역위연구구,기우GDEM(Global Digital Elevation Model)여SRTM (Shuttle Radar Topography Mission)제취적파도수거,삼조기우1：50,000지형도적10 m분변솔파도수거,근거직방도필배원리,구건파도강척도변환모형,진행강척도변환,득도연하류역경고질량적、가공개사용적파도수거화일투대중저분변솔파도수거강척도변환적유효방법。
Solving the problem of scaling effect in slope gradient which is derived from lower resolution slope based on remote sensing sourced DEMs, is an urgent need in the field of hydrology modeling and regional soil erosion simulation etc. In this paper, Yanhe watershed was selected as research area. Slope rescaling transformation mode was built based on the principle of histogram matching. GDEM ( Global Digital Elevation Model) and SRTM ( Shuttle Radar Topography Mission) elevation derived slopes were chosen as based data and 10m resolution slope which was derived based on 1:50,000 topo-maps was chosen as high resolution slope data used in the model. A group of high-quality and public used slope data in Yanhe watershed and a set of effective methods for down-scaling lower resolution slope were obtained.