黄土丘陵沟壑区地形分类方法的研究

The study of landform classification in complicated terrain areas—Loess hill and gully area

根据黄土丘陵沟壑区的地形特征,将其地形分为梁峁地、沟坡地、沟底地三大类。本文提出了一种利用规则格网DEM,依据正负地形指数、剖面曲率、坡度等因子对黄土丘陵沟壑区进行地形分类的算法。该算法易于实现,自动化程度高。通过实验分析可知得到的结果能较准确表示实际地形,分类结果能满足大中尺度研究的需要。

Based on the shape features of loess hilly and gully region, the landform can be divided into ridge and hills, sloping fields, gullies. An algorithm based on regular grid DEM was proposed in this paper. It could classify the landform of hilly and gully region in accordance with the landform exponent, profile curvature and slope. Experimental result showed that this method, with high automation and feasibility, can express actual landform accurately, and the classification result can satisfy different kind of scale.