基于多模态地形因子相关性分析

Correlation analysis of multi-modal terrain factors

不同的地形因子从不同侧面反映地面的起伏特征或空间变异,各因子之间所存在的相互关联、相互制约、相互影响的程度与特征,在很大程度上揭示了地形发育与空间变异的内在本质,因而是地貌研究的重要内容。文章提出基于多模态地形因子分类体系,该体系从地貌的物理特征和视觉认知等方面对现有的地形因子分类体系进行了补充。并以风成地貌、黄土地貌、流水地貌、喀斯特地貌、干燥地貌、冰川地貌这六种地貌类型8个样本地区为实验样区,以1:25万比例尺DEM为基准数据,探讨多模态地形因子之间相关性及变化规律。

Different terrain factors can reflect the fluctuation and spatial variation from different aspects.The intrinsic essence of lhe lerraiii developinenl and spatial variation can be disclosed based on the extent and features of the interrelations,mutual constraints and mutual effects among different factors,so it is important to study these factors in landfonn research.In this paper,the multi-modal based terrain factor classification system is proposed,which further supplements the existing classification system from the aspects of physical characteristics and visual cognition.Six types of landform are constructed in eight sample areas as the experiment regions,including the aeolian,loess,fluvial,karst,arid,glacial landform,and the experiments are conducted based on the basic reference data of DEM at scale of 1:250000 to discuss the correlation among the multi-modal terrain factors and their changing rules.