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中文摘要：
基于数字高程模型（DEM）空间分析方法，利用SRTM采集的DEM数据，提出两种获取区域地形起伏的关键技术，即高程条带法（Swath Profile）和高程阈值法（Threshold Value），并通过扩展区域地形起伏获取的技术方法，初步实现了黄土高原典型地区侵蚀量的定量化分析。
英文摘要：
Topographic analysis has been widely used in the study of landscape evolution and surface process, and the researches in this field have become more and more quantitative. Local topographic relief, which is defined as the difference between local maximum elevation and local base level, is one of the key methods in topographic analysis. Based on a spatial analysis of the SRTM - DEM, this paper puts forward two methods for the acquisition cf local topographic relief, i. e. , Swath Profile and Threshold Value. The quantitative analysis of the erosion within a typical area of the Loess Plateau has been preliminarily realized by extending the Threshold Value method.
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