Extraction and Application of Relief of China Based on DEM and GIS Method

LIU Xin hua; YANG Qin ke; TANG Guo an

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Extraction and Application of Relief of China Based on DEM and GIS Method

- Extraction and Application of Relief of China Based on DEM and GIS Method
- Bulletin of Soiland Water Conservation Vol. 20, Issue 1, Pages: 57-59(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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LIU Xin hua, YANG Qin ke, TANG Guo an. Extraction and Application of Relief of China Based on DEM and GIS Method[J]. Bulletin of Soiland Water Conservation, 2001, 20(1): 57-59.
DOI：

LIU Xin hua, YANG Qin ke, TANG Guo an. Extraction and Application of Relief of China Based on DEM and GIS Method[J]. Bulletin of Soiland Water Conservation, 2001, 20(1): 57-59. DOI：

摘要

基于全国 1:10 0万的栅格数字高程模型 ( DEM)数据

在 ARC/ INFO的 GRID模块支持下

利用窗口分析方法

经过采样统计

确定中国水土流失地形起伏度的最佳分析窗口大小为 5 km× 5 km;基于 5 km× 5 km的分析窗口

提取了中国水土流失地形起伏度

完成了中国水土流失地形起伏度制图;最后对中国水土流失地形起伏度进行了适用性分析

并将其初步应用于中国潜在水土流失评价.

Abstract

Based on micro-scale DEM datum

optimum size of analysis windows of relief，which is 5km×5km

is defined by means of windows analysis and sample statistical method. Relief in soil erosion of China has been extraded using ARC/INFO software and mapp

d using Arcview.Applicalality of relief was analyzed and initially application of reli

f factor in assessment of Chinese potential soil and water loss is studied.

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Keywords

references

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