High Accuracy DEM Products and Its Application in Gully Region of Loess Plateau

WANG Hong-bin; LIU Bin; TIAN Xing-fang; JIA Ze-xiang

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High Accuracy DEM Products and Its Application in Gully Region of Loess Plateau

- High Accuracy DEM Products and Its Application in Gully Region of Loess Plateau
- Bulletin of Soiland Water Conservation Vol. 23, Issue 3, Pages: 34-36(2004)
- 作者机构：
  
  1. 黄河水利委员会西峰水土保持站,甘肃西峰,745000
  2. 黄河水利委员会黄河上中游管理局,陕西,西安,710043
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2004
- 稿件说明：
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WANG Hong-bin, LIU Bin, TIAN Xing-fang, et al. High Accuracy DEM Products and Its Application in Gully Region of Loess Plateau[J]. Bulletin of Soiland Water Conservation, 2004, 23(3): 34-36.
DOI：

WANG Hong-bin, LIU Bin, TIAN Xing-fang, et al. High Accuracy DEM Products and Its Application in Gully Region of Loess Plateau[J]. Bulletin of Soiland Water Conservation, 2004, 23(3): 34-36. DOI：

摘要

高精度数字高程模型(DEM)是水土流失规律研究与流域地形空间分析中重要的空间数据。以黄土高原沟壑区的南小河沟流域为例

以1∶1万地形图为数据源

探讨了在Arcgis和ArcView地理信息平台下

生成高精度DEM及提取流域土壤侵蚀指标的步骤和方法。结果表明

提取的地形信息能准确地反映该区域地形起伏变化与破碎状况

满足当前"数字流域"建设的需要。

Abstract

High accuracy DEMs is an important data in study of soil erosion and terrain feature space analysis.Taking Nanxiaohegou watershed in Gansu Province

which is in the gully region of Loess Plateau as an example

and 1∶10000 relief map as an data source

the method of high accuracy DEMs and extract soil erosion index of watershed are discussed.The result shows that the terrain feature information is better and truly based on high accuracy DEMs

it is contented in the build of digital watershed at present.

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