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Remote Sensing Technology and Application  2008, Vol. 23 Issue (2): 214-218    DOI: 10.11873/j.issn.1004-0323.2008.2.214
article     
Slope-Extraction Analysis of Typical Physiognomy in Northwest Droughty Area Based on DEM
LI Juan, ZHAO Jun
(College of Geography and Environment Science of North West Normal University,Lanzhou 730000, China )
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Abstract  

The directly derived landform information can hardly meet the acquisition for the influence of multi\|scales of DEM, the macroscopic and diversity of terrain.At the same time, the precision is uncertain using DEM to extract slope.Taking typically physiographic plain and upland of northwest droughty area for example and using 1:10000 and 1:50000 scale DEM ,the slope driving results are compared and the variation rules are analyzed.The error of slope-extraction in quantity are simulated.

Key words:   DEM      Northwest drought area      Slope-extraction      Analysis     
Received:  22 October 2007      Published:  24 October 2011
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Cite this article: 

LI Juan, ZHAO Jun. Slope-Extraction Analysis of Typical Physiognomy in Northwest Droughty Area Based on DEM. Remote Sensing Technology and Application, 2008, 23(2): 214-218.

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http://www.rsta.ac.cn/EN/10.11873/j.issn.1004-0323.2008.2.214     OR     http://www.rsta.ac.cn/EN/Y2008/V23/I2/214

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