顾及地形特征的复杂度通用模型定量研究  

Quantitative study of a generic model of complexity taking into account topographic features

作　　者：李书雪 葛文 成毅[1] 张金禄 LI Shuxue;GE Wen;CHENG Yi;ZHANG Jinlu(Institute of Geospatial Information,Strategic Support Force Information Engineering University,Zhengzhou 450001,China)

机构地区：[1]战略支援部队信息工程大学地理空间信息学院,河南郑州450001

出　　处：《海洋测绘》2024年第2期72-77,共6页Hydrographic Surveying and Charting

基　　金：自然资源部重点实验室基金(2121106)。

摘　　要：地形复杂度是数字地形分析的重要参数,目前缺少统一的标准,故提出一种通用地形数字化描述模型。选取15个典型地貌试验区,利用DEM计算坡面地形因子的亲疏程度,筛选出最佳模型参数;通过因子分析确定权重,进而构建地形复杂度模型;结合不同地形的模型对比及综合地貌可视化,说明地形复杂度模型的准确性及普适性。实验结果显示地形复杂度与地形特征存在较强的关系:TCI<0.1呈平原或盆地地形,0.1≤TCI<0.8呈丘陵地形,0.8≤TCI<1.8呈高原地形,TCI≥1.8呈山地地形。通过实验验证,表明了地形复杂程度与海拔高度和山地尺度之间存在一定程度的正相关关系。此外,本研究为地形地貌研究、生态环境影响和区域发展评价提供了实用指导。Terrain complexity is an important parameter of digital terrain analysis,lack of unified standards,a universal terrain digital description model thus is proposed.In this paper,15 typical geomorphological test areas are selected,and the DEM is used to calculate the affinity degree of slope topographic factors to screen out the best model parameters.The weights are determined through factor analysis,and then the terrain complexity model is constructed.The model comparison of different terrains and the comprehensive geomorphological visualisation are combined to illustrate the accuracy and universality of the terrain complexity model.The results show a strong relationship between terrain complexity and terrain features:TCI<0.1 is the plain or basin terrain,0.1≤TCI<0.8 is the hilly terrain,0.8≤TCI<1.8 is the highland terrain,and TCI≥1.8 is the mountainous terrain.The experimental validation shows positive correlation between terrain complexity and altitude and mountain scale.In addition,this paper provides practical guidance for topographic and geomorphological research,ecological and environmental impacts and regional development evaluation.

关 键 词：数字高程模型 地形复杂度 坡面因子 地形特征 定量研究 因子分析 

分 类 号：P297[天文地球—测绘科学与技术]