[1]杨勤科,李锐,梁伟.区域水土流失地形因子的地图学分析[J].水土保持研究,2006,13(01):56-58,99.
　YANG Qin-ke,LI Rui,LIANG Wei.Cartographic Analysis on Terrain Factors for Regional Soil Erosion Modeling[J].Research of Soil and Water Conservation,2006,13(01):56-58,99.
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区域水土流失地形因子的地图学分析

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 13 期数: 2006年01期 页码: 56-58,99 栏目: 出版日期: 1900-01-01
Title:
Cartographic Analysis on Terrain Factors for Regional Soil Erosion Modeling
作者:
杨勤科, 李锐, 梁伟
中国科学院水利部水土保持研究所 陕西 杨陵 712100
Author(s):
YANG Qin-ke, LI Rui, LIANG Wei
Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China
关键词:
水土流失; 地图学; 数字地形模型; 坡度
Keywords:
soil loss; cartography; DEM; slope gradient
分类号:
S157;TP79
摘要:
地形是影响区域水土流失的主要因子，基于中小栅格DEM提取的坡度是区域水土流失地形因子的主要指标之一。根据地貌学和地图制图学论文分析和对地形图及其DEM图形分析表明，在一定比例尺范围内（1∶1万~1∶25万），多种比例尺的地形图均能表现区域地形的宏观结构特征；随着DEM分辨率的降低，在DEM上量算得到的坡度不断趋于平缓；由于制图综合不直接影响高程的数值，所以中小栅格DEM表现地面起伏的能力是存在的，只是发生了一定的变形而已。
Abstract:
Slope gradient is one of main factors for regional soil erosion modeling.Based on micro-geomorphology and cartography theory and digital terrain analysis,it shows that macro features of geomorphology could be depicted by topographic maps at multiple scales,but the slope extracted from DEMs become gentler along with the DEM resolution become coarser,but capacity to represent the land relief is keep in some extent because have no direct cartographic generalization to elevation.

参考文献/References:

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备注/Memo

收稿日期:2005-10-9;
基金项目:中国科学院知识创新重要方向项目：黄土高原水土保持的区域环境效应研究（合同号：KZCX3-SW-421）
作者简介:杨勤科（1962- ），男，研究员，主要从事区域水土流失和GIS应用研究.

更新日期/Last Update: 1900-01-01