Effect of DEM's Resolution on Watershed Hydrologic Modeling

ZHANG Xue-song; HAO Fang-hua; YANG Zhi-feng; LIU Hong; WANG Qing-zhai; DAI Dong

您当前的位置：

首页 >

文章列表页 >

Effect of DEM's Resolution on Watershed Hydrologic Modeling

- Effect of DEM's Resolution on Watershed Hydrologic Modeling
- Bulletin of Soiland Water Conservation Vol. 23, Issue 1, Pages: 32-35(2004)
- 作者机构：
  
  1. 北京师范大学环境科学研究所环境模拟与污染控制国家重点联合实验室,北京,100875
  2. 黄河水利委员会水文局,河南,郑州,450003
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2004
- 稿件说明：
移动端阅览
ZHANG Xue-song, HAO Fang-hua, YANG Zhi-feng, et al. Effect of DEM's Resolution on Watershed Hydrologic Modeling[J]. Bulletin of Soiland Water Conservation, 2004, 23(1): 32-35.
DOI：

ZHANG Xue-song, HAO Fang-hua, YANG Zhi-feng, et al. Effect of DEM's Resolution on Watershed Hydrologic Modeling[J]. Bulletin of Soiland Water Conservation, 2004, 23(1): 32-35. DOI：

摘要

在GIS技术的支持下应用SCS模型

以黄河下游支流洛河卢氏水文站以上流域为研究区

基于1:250 000 DEM和1:1 000 000 DEM对1992-2000年的流域径流量进行了模拟

研究了径流模拟对DEM分辨率的敏感性

结果表明1:250 000 DEM的模拟值比1:1 000 000 DEM为高。由不同分辨率的DEM得到流域面积、河网结构、高程等空间参数相差较小

而坡度相关的变化较大。根据SCS模型敏感参数Cn

从坡度参数变化角度分析了不同分辨率的DEM对流域径流量影响。

Abstract

With the support of GIS technology，the SCS (soil conservation service)model was selected to model runoff of the upper watershed of the Luohe River(a tributary of the Yellow River) using a 1:250 000 DEM and a 1，1 000 000 DEM.By comparison of the simulated annual average runoff yield from through to 2000，it was found that a higher runoff volume was obtained using the 1:250 000 DEM.There are marginal differences in area，elevation，slope，channel length，and drainage network between the DEMs of different resolution，but there is a greater difference in slope change.Through analysis of the sensitive parameter CN of the SCS model，the sensitivity of runoff modeling to DEM resolution is described from the perspective of slope change.

关键词

Keywords

references

Views

1159

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Terrain Complexity Index and Its Derivation from DEMs

Water Costof Sediment Control of Soil and Water Conservation in Hekou and Longmen Section of Yellow River

Analysis of the Runoff Cost for Sediment Control by Soil and Water Conservation Measures in North China

Monitoring Debris flow Hazard Based on DEM Matching and Deformation Detecting without Control Points

A Comparison of Metheods for Computating Slope Length Based on DEM

Related Author

WANG Lei

TANG Guo-an

LIU Xue-jun

LONG Yi

WANG Chun

WANG Fei

MU Xingming

LI Rui

Related Institution

Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling District 712100, Shaan xi Province

Northwestuniversity of Agriculture and Forestry, Yangling District

College of Resources and Environment,Northwest A & F University,Yangling

Bureau of Hydrology and Water Resources of the Middle Yellow River,YRCC

⁰