黄土高原地貌类型界线划定研究进展

doi:10.12082/dqxxkx.2022.210837

摘要/Abstract

摘要：

区分地理实体最直接有效的方式在于对其界线作出划定。目前,黄土高原地貌类型界线划定多是在分类基础上按照分类界线、自然区划界线来界定。基于不同数据源及其表达方式,本文追踪前人对黄土高原地貌类型界线划定的研究进展,从形态成因的地貌分类、数字地貌分类等分类体系中总结了黄土地貌类型界线的内涵,分析了基于自然语言和数字环境下定量描述的优缺点和存在的问题;并梳理了黄土地貌类型界线的表示方法以及基于数字地形分析技术的地貌类型定量识别及其划分方法;从地貌界线确定与分类体系的关系、地貌界线划定的理论与方法参考、地貌界线划定的尺度效应3个方面对地貌类型界线做出了讨论分析与展望,以期为黄土地貌区划的相关理论研究提供背景基础,为当地实践工作等提供理论依据和支撑。

关键词: 黄土高原地貌, 地貌类型, 地貌界线, 界线划定, 等高线, 数字地形分析技术, 正负地形特征, 尺度效应

Abstract:

The most direct and effective way to distinguish geographical entities is to delineate their boundaries. At present, the delineation of the geomorphic boundary of the Loess Plateau is mostly based on classification boundaries and natural division boundaries. Based on different data sources and their expressions, this article reviews the previous research progress on the demarcation of the natural geographic boundary of loess landform types and summarizes the connotation of loess landforms boundary from morphological genetic geomorphic classification, digital geomorphic classification, and other classification systems. The advantages and disadvantages of quantitative description based on natural language and digital environment are analyzed. Besides, we sort out the quantitative identification and classification methods of the Loess Plateau landform types based on digital terrain analysis. Furthermore, we discuss and prospect the geomorphic boundaries from three aspects: (1) the relationship between the determination of the landform boundary and the classification system; (2) the reference of the delineation of the landform boundary; (3) the scale effect of the landform boundary. This review summarizes the background of the relevant theoretical studies on loess geomorphic regionalization and provides the theoretical basis and support for local practical work.

Key words: loess plateau landforms, landform types, landform boundary, boundary delineation, contour, digital terrain analysis technology, positive and negative topographic features, scale effect

丁小花, 王琤, 席俊杰, 王朝, 岳程瑜, 张青峰. 黄土高原地貌类型界线划定研究进展[J]. 地球信息科学学报, 2022, 24(7): 1219-1233.DOI:10.12082/dqxxkx.2022.210837

DING Xiaohua, WANG Cheng, XI Junjie, WANG Zhao, YUE Chengyu, ZHANG Qingfeng. Review on the Research Progress of Boundary Delineation Methods of the Loess Plateau Landforms[J]. Journal of Geo-information Science, 2022, 24(7): 1219-1233.DOI:10.12082/dqxxkx.2022.210837

图/表 4

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