陕北黄土高原正负地形研究

P931; The Loess positive and negative terrains (P-N terrains), which are widely distributed on the Loess Plateau, are discussed for the first time by introducing its characteristic,demarcation as well as extraction method from high-resolution Digital Elevation Models. Using 5 m-resolution DEMs as or...

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Bibliographic Details
Published in地理学报(英文版) Vol. 20; no. 1; pp. 64 - 76
Main Authors 周毅, 汤国安, 杨昕, 肖晨超, 张媛, 罗明良
Format Journal Article
LanguageChinese
Published 2010
Subjects
spatial differentiation
positive and negative terrains
shoulder-lines
DEM
Loess Plateau
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ISSN1009-637X
DOI10.1007/s11442-010-0064-6

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Summary:P931; The Loess positive and negative terrains (P-N terrains), which are widely distributed on the Loess Plateau, are discussed for the first time by introducing its characteristic,demarcation as well as extraction method from high-resolution Digital Elevation Models. Using 5 m-resolution DEMs as original test data, P-N terrains of 48 geomorphological units in different parts of Shaanxi Loess Plateau are extracted accurately. Then six indicators for depicting the geomorphologic landscape and spatial configuration characteristic of P-N terrains are proposed. The spatial distribution rules of these indicators and the relationship between the P-N terrains and Loess relief are discussed for further understanding of Loess landforms.Finally, with the integration of P-N terrains and traditional terrain indices, a series of un-supervised classification methods are applied to make a proper landform classification in northern Shaanxi. Results show that P-N terrains are an effect clue to reveal energy and substance dist
ISSN:1009-637X
DOI:10.1007/s11442-010-0064-6