论文部分内容阅读
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。
The gully along the Loess Plateau is the topographic structure line which can best reflect the morphological characteristics of the loess landform. The morphological structure, level, spatial distribution and development trend along the ditch are not only the most obvious external appearances of loess landforms, but also deeply reflect the intrinsic mechanism of loess landform development. Based on the previous studies on the classification of feature elements of linear topography, this paper analyzes the classification system of the existing loess topography along the line type. Secondly, from the perspective of quantitative analysis, The status quo of quantitative indicators along the line was analyzed, and the characteristics and adaptability of automatic extraction technology along the line were summarized and summarized. In addition, the research progress of loess landform based on the ditch along the ditch is analyzed. The connotation and development trend of the research on the ditch along the ditch are expatiated from the dialectical perspective. The existing problems of the ditch along the ditch are analyzed in depth and the digital terrain analysis of the loess landform is prospected Prospects.