基于DEM的大义山地貌演化阶段研究  

作　　者：张笑含 

机构地区：[1]辽宁师范大学,辽宁大连116029

出　　处：《科技创新与应用》2024年第6期95-99,共5页Technology Innovation and Application

摘　　要：基于数字高程模型(DEM)数据,运用地理信息系统(GIS)技术,结合地理循环说,以依据大义山范围划分的流域为单位求取各流域的地形高程(包括平均高程、最大高程、最小高程),应用起伏比法探究大义山流域的面积-高程积分值(HI值)分布情况,以了解南岭大义山现在所处的地貌演化阶段。研究结果显示,大义山流域HI值总体处在0.377~0.449,流域1 HI值0.449、流域2 HI值0.401、流域3 HI值0.377,面积-高程积分曲线均呈S型,山地处于地貌演化的壮年期,无地区处在演化幼年期和老年期,西北部较东南部更年轻,大义山整体在由壮年期向老年期转化。Based on digital elevation model(DEM)data,using geographic information system(GIS)technology and combining with the geographical cycle theory,the topographic elevation(including average elevation,maximum elevation and minimum elevation)of each watershed divided according to the scope of Dayi Mountain is obtained.The distribution of hypsometric integral(HI)values in Dayi Mountain watershed is investigated by using the relief ratio method to understand the present geomorphologic evolution stage of Dayi Mountain in Nanling.The results show that the overall HI value of Dayi Mountain watershed is between 0.377~0.449,the HI value of the watershed 1 is 0.449,the HI value of the watershed 2 is 0.401,and the HI value of the watershed 3 is 0.377.The hypsometric curves of the watersheds are all S-shaped.The mountain is in the mature stage of geomorphologic evolution,and no area is in the young stage and the old stage of evolution.The northwest is younger than the southeast,and Dayi Mountain is transforming from the mature stage to the old stage.

关 键 词：DEM 地理循环说 面积-高程积分 地貌演化 大义山 

分 类 号：P931[天文地球—自然地理学]