[1]刘红艳,杨勤科,牛亮,等.坡度与水平分辨率关系的初步研究[J].水土保持研究,2010,17(04):34-37.
　LIU Hong-yan,YANG Qin-ke,NIU Liang,et al.Relationships between DEM-derived Slope and Horizontal Resolution[J].Research of Soil and Water Conservation,2010,17(04):34-37.
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坡度与水平分辨率关系的初步研究

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 17 期数: 2010年04期 页码: 34-37 栏目: 出版日期: 2010-08-20
Title:
Relationships between DEM-derived Slope and Horizontal Resolution
作者:
刘红艳1, 杨勤科2,3, 牛亮2, 王春梅3, 李俊1
1. 西北农林科技大学 资源环境学院, 陕西 杨陵 712100;
2. 西北大学 城市与环境学院, 西安 710069;
3. 中国科学院 水利部 水土保持研究所, 陕西 杨陵 712100
Author(s):
LIU Hong-yan1, YANG Qin-ke2,3, NIU Liang2, WANG Chun-mei3, LI Jun1
1. College of Resources and Environment, Northwestern A&F University, Yangling, Shaanxi 712100, China;
2. College of Urban and Environmental Science, Northwest University, Xi’an 710069, China;
3. Institute of Soil and Water Conservation, Chinese Academy of Sciences And Ministry of Water Resources, Yangling, Shaanxi 712100, China
关键词:
数字高程模型; 地形分析; 分辨率; 地形特征点
Keywords:
DEM; terrain analysis; resolution; topographic feature point
分类号:
S157.1;TP79
摘要:
结合数字地形分析和常规统计方法，研究了县南沟流域DEM水平分辨率与坡度值的关系。研究表明：随着水平分辨率的降低，流域平均坡度值下降；地形特征点坡度呈现出随机性；沟沿线坡度随分辨率降低呈衰减趋势，分水线和流水线坡度相对缓慢降低。负地形坡度衰减速度大于正地形。
Abstract:
Taking Xiannangou watershed as the test area,this paper studied the relationships between DEM-derived slope and horizontal resolution by using terrain analysis and statistical method.The main conclusions are as follows: with DEM resolution decreasing,mean slope decreases; slope at single point shows uncertainty; slope at edgeline decreases sharply,slope at borderline and streamline decreases slowly.Slope at negative terrain decreases more sharply than positive terrain.

参考文献/References:

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备注/Memo

收稿日期:2010-4-24;
基金项目:国家重点基础研究发展计划（973）项目（2007CB407203）;国家自然科学基金项目（40971173）
作者简介:刘红艳（1985- ），女，硕士生，从事GIS空间分析及应用研究。E-mail：hyliu_85@126.com
通讯作者:杨勤科（1962- ），男，教授，从事区域水土流失评价及GIS地形分析研究。E-mail：qkyang@126.com

更新日期/Last Update: 1900-01-01