目 录
摘 要......................................................................................................................................I
ABSTRACT............................................................................................................................II
目 录 .....................................................................................................................................3
1 引言 .....................................................................................................................................4
1.1 基本概念 ..................................................................................................................4
1.2 研究目的及意义 ......................................................................................................5
1.3 国内外研究现状 ......................................................................................................6
1.4 研究的主要内容 ......................................................................................................7
1.5 研究采取的主要方法及路线 ..................................................................................7
2 研究基础 ...........................................................................................................................10
2.1 沟谷网络分级及相关知识 ....................................................................................10
2.2 实验区域及数据简介 ............................................................................................11
2.3 软件简介 ................................................................................................................12
3 基于 DEM 的沟谷网络空间信息提取 ............................................................................14
3.1 实验数据的预处理 ................................................................................................14
3.2 水流方向提取 ........................................................................................................16
3.3 无洼地 DEM 生成 .................................................................................................18
3.4 汇流累计量与沟谷的计算 ....................................................................................22
4 不同空间区域的沟谷网络特征分析 ...............................................................................28
4.1 基于分级沟谷网络提取基本信息数据 ................................................................28
4.2 结果分析 ................................................................................................................29
5 结论和相关问题分析 .......................................................................................................34
5.1 结论 .........................................................................................................................34
5.2 设计过程中主要问题及解决方案 ........................................................................34
参考文献 ...............................................................................................................................36
致谢 .......................................................................................................................................38
附录 .......................................................................................................................................39
附录 1：英文原文 ........................................................................................................40
附录 2：中文译文 ........................................................................................................41
