中山大学学报自然科学版 ›› 2018, Vol. 57 ›› Issue (2): 12-21.

• 论文 • 上一篇    下一篇

基于DEM的丹霞地貌演化阶段划分

章桂芳1, 2,陈凯伦1,张浩然1,张慧3   

  1. 1. 中山大学地球科学与工程学院,广东 广州 510275;
    2. 广东省地球动力作用与地质灾害重点实验室,广东 广州 510275;
    3. 东北农业大学资源与环境学院,黑龙江 哈尔滨 150030
  • 收稿日期:2017-11-17 出版日期:2018-03-25 发布日期:2018-03-25

The evolution stage decision of Danxia landform based on digital elevation model (DEM)

ZHANG Guifang 1, 2,CHEN Kailun1,ZHANG Haoran1,ZHANG Hui4   

  1. 1. School of Earth Science and Engineering, Sun Yat-sen University, Guangzhou 510275,China;
    2. Guangdong Provincal Key Lab of Geodynamics and Geohazards, Sun Yat-sen University, Guangzhou 510275, China;
    3. College of Resources and Environmental Sciences, Northeast Agricultural University, Harbin 150030,China
  • Received:2017-11-17 Online:2018-03-25 Published:2018-03-25

摘要:

基于ASTER DEM数据,运用面积高程积分理论,探索丹霞地貌发展阶段的定量划分。研究结果表明随着丹霞地貌从年轻到成熟的发育,面积高程积分曲线形态从凸形转为凹形,且凹形特征逐步加强,而HI值则越来越小,基本符合地貌演化的规律。同一地区不同区域的面积高程积分对比研究也表明其可以敏锐地反映丹霞地貌发育的多期性,另外,同一地区的对比研究表明丹霞地貌演化阶段存在普遍的尺度效应,在进行面积高程积分的计算中需要充分考虑。

关键词: 丹霞地貌, DEM, 面积高程积分, 演化阶段, 定量研究

Abstract:

Based on the ASTER DEM data, this paper adopted hypsometric theory to study the quantitative representation of the evolution stages of Danxia landform. The result indicates that the hypsometric curve is changed from convex to concave with the development of Danxia landform from young to mature, and the concave features are gradually strengthened, while the HI value is getting smaller and smaller, which is consistent with the law of Danxia landform evolution. Based on the comparative study of different sub-zones in the same Danxia landform region, hypsometric curve and index can reflect the multi-stage evolution in the same Danxia landform region. In addition, the comparative study of the same area shows that there is a general scale effect in the evolution phase of Danxia landform, which needs to be fully considered in the calculation of hypsometric curve and index.

Key words: Danxia landform, DEM, hypsometry, evolution stage, quantitative research

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