Research on Accuracy of Slope Derived From DEMs of Different Map Scales

TANG Guo an; YANG Qin ke; ZHANG Yong; LIU Yong mei; LIU Xin hua

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Research on Accuracy of Slope Derived From DEMs of Different Map Scales

- Research on Accuracy of Slope Derived From DEMs of Different Map Scales
- Bulletin of Soiland Water Conservation Vol. 20, Issue 1, Pages: 53-56(2001)
- 作者机构：
  
  1. 中国科学院水利部水土保持研究所陕西杨凌,712100
  2. 西北大学城市与资源学系,陕西,西安,710069
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2001
- 稿件说明：
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TANG Guo an, YANG Qin ke, ZHANG Yong, et al. Research on Accuracy of Slope Derived From DEMs of Different Map Scales[J]. Bulletin of Soiland Water Conservation, 2001, 20(1): 53-56.
DOI：

TANG Guo an, YANG Qin ke, ZHANG Yong, et al. Research on Accuracy of Slope Derived From DEMs of Different Map Scales[J]. Bulletin of Soiland Water Conservation, 2001, 20(1): 53-56. DOI：

摘要

以陕北绥德县韭园沟流域为试验样区

采用高精度 1: 1万 DEM所提取的坡度为准值

应用多层面复合分析和比较分析的方法

研究该地区 1: 5万 DEM提取地面坡度的误差特征与纠正方法。试验结果显示

所获得的不同空间尺度下 DEM所提取坡度值的转换图谱

可对 1: 5万 DEM计算的地面坡度统计值进行有效修正。该成果对于 DEM数据在水土保持领域若干应用标准的制定

提供了重要的理论依据与技术路线.

Abstract

Taking Jiuyuan watershed in Suide county of northern Shaanxi province，a test area

applying overlaidand cxun parative laws as a basic research m ethodology and 1:10 000 DEM as a cntenon

a research on the errors simulation and the rectify method in deriving slope gradient from 1:50 000 scale DEMs was made A gradient correction down}caling model obtained can effectively rectify the slope statistical values in the hill and gully area of the loess plateau

which is of great significance in enacting related standards in the fields of both soil erosion monitoting and soil conservation.

关键词

Keywords

references

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Carter J The effect of data precision on the calculation of slope and aspect using gridded DEMs[J].Cartographi-ca,1992,29(1):22-34

Gao J. Resolution and accuracy of terrain representation by grid DEMs at a micro-scale[J].Cartographical Infororation Scdence, 1997,11(2): 199-212.

李国忠.关十D EM的高程、坡度、坡向精度评估[J].黑龙江测绘，1996,19(2):87-89.

Tang C.A research on the accurwacv of digital elevation models[M]. Beijing Scaence Press,2000.

汤国安.数字高程模型在黄土斤陵沟壑区地而坡度图制作中的应用[Z].神府地区资源与环境遥感调查及制图.北京:利一学出版社，1994.

李志林，朱庆.数字高程模型[M].武汉:武汉测绘科技人学出版社，2000.

汤国安.DEM地形描述误差空间结构分析[J].西北人学学报(自然科学版)，2000,20(4):349-352.

陈述彭，等，地学信息图谱研究及其应用[J].地理研究，2000, 19(4):339-343.

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