摘要
沟道系统是黄土高原地区主要的侵蚀产沙区,也是小流域综合治理的关键部位。以南小河沟流域为例,在概括黄土高塬沟壑区沟道系统地貌特征的基础上,以坡度与海拔因素为关键特征,基于数字高程模型,开发了黄土高塬沟壑区沟道提取系统,实现对黄土高原沟壑区目标沟道系统DEM的自动提取。提取的沟道系统与原始图像比较非常吻合,结果满意。该系统为黄土高原地区沟道系统的提取提供了行之有效的思路与方法。
Gully system is the sand source and key part of the Loess Plateau. Taking Nanxiaohegou as example, a digital elevation model （DEM） based gully distinguishing system was developed to extract the gully system in the loess upland gully area. Two main topographic characteristics of the gully, slope and elevation were adopted in the program to realize the gully system extraction. The extracted gully system matched well with the original map of the region. The program provides an effective way to for gully system extraction in the Loess Plateau.
出处
《西北林学院学报》
CSCD
北大核心
2009年第6期220-223,共4页
Journal of Northwest Forestry University
基金
"十一五"科技支撑项目(2006BAD03A0206)
关键词
黄土高原沟道识别系统
南小河沟
沟道提取
黄土高原沟壑区
Loess Plateau gully exaction system（LPGES）
Nanxiaohegou
gully extraction
loess upland gully area
