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黃土高原溝壑區地形分異特征

黃土高原溝壑區地形分異特征

常存;朱清科;張巖

【期刊名稱】《東北林業大學學報》

【年(卷),期】2013(041)002

【摘要】According to dynamic effect model ( DEM) data of different gullies in the Loess Plateau, we revealed the topography characteristics and distribution pattern of site types in gullies of loess plateau. The results showed that: The distributions of aspect in different gullies are diverse. The area proportion in the plateau gully region of the Loess Plateau has a left-skewed distribution. The area proportion in the 5th sub-region of hilly in transitional region and gully region has a double-peak distribution, and that in the 2nd sub-region of hilly and gully region has an approximately normal distribution. Hilly slope of transitional region, the 2nd sub-region of hilly and gully region are ma inly distributed above the slope of 25°. Hilly slope of the 5th sub-region of hilly and gully region are mainly distributed on slope between 15° and 25°. The order of area proportion of slope forms on gully slope in transitional region and hilly and gully regions is: convex form slope>concave form slope >linear form slope. The order of area proportion of slope forms on hilly slope in hilly and gully region is different. The 2nd sub-region of hilly and gully region has a pattern: convex form slope>concave form slope>linear form slope, while the 5

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