黄土地貌沟沿线研究综述

A Review on Research of Loess Shoulder-Line

黄土高原的沟沿线是最能体现黄土地貌形态特征的地形结构线。沟沿线的形态结构、层次级别、空间展布、发育趋势,既是黄土地貌最显著的外在表象,又深刻地映射着黄土地貌发育的内在机理。该文首先从沟沿线类型划分入手,在总结前人对线状地貌特征要素分类研究的基础上,分析了现有黄土地貌沟沿线类型划分体系;其次,从定量分析的角度,对现有沟沿线的量化指标研究现状进行了分析,系统归纳和总结了沟沿线自动提取技术的特点与适应性。此外,分析了基于沟沿线的黄土地貌研究进展,并从辩证的视角阐述了沟沿线研究科学内涵与发展趋势,对当前沟沿线研究存在的问题进行了深入剖析,展望了黄土地貌数字地形分析的发展前景。

Loess shoulderqine is one of the most significant topographic structure lines in Loess Plateau. The morphological structure, hierarchical level, spatial pattern and evolution trend of loess shoulder-line are not only the outward appearance of lo- ess landforms, but also the internal mechanisms of its development. Firstly, this paper analyzed its classification system based on a summary of classification of linear features. And then, a quantitative index system was introduced and extracting techniques of shoulder-line were summarized systematically. The research on loess landforms based on loess shoulder-line was also discussed. Finally, the scientific connotation of shoulder-line was expressed in view of dialectics, some problems were pointed out and the main development trend was proposed.