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基于DEM的丹霞地貌演化阶段划分

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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.
The evolution stage decision of Danxia landform based on digital elevation model(DEM)
Based on the ASTER DEM data,this paper adopted hypsometric theory to study the quantita-tive 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 e-volution 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 con-sidered in the calculation of hypsometric curve and index.

Danxia landformDEMhypsometryevolution stagequantitative research

章桂芳、陈凯伦、张浩然、张慧

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中山大学地球科学与工程学院,广东广州510275

广东省地球动力作用与地质灾害重点实验室,广东广州510275

东北农业大学资源与环境学院,黑龙江哈尔滨150030

丹霞地貌 DEM 面积高程积分 演化阶段 定量研究

国家自然科学基金广东省自然科学基金广州市科技计划项目高校基本科研业务费青年教师培育基金

414022972014A03031311620170701020917lgpy49

2018

中山大学学报(自然科学版)(中英文)
中山大学

中山大学学报(自然科学版)(中英文)

CSTPCDCSCD北大核心
影响因子:0.608
ISSN:0529-6579
年,卷(期):2018.57(2)
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