【作者】 易红伟；

【导师】 汤国安；

【作者基本信息】 西北大学 ， 地图学与地理信息系统， 2004， 硕士

【摘要】 沟壑特征是黄土高原地貌的主要特征。本研究在广泛总结前人研究成果与研究经验的基础上，利用地理信息系统、地形地貌学、水文学和系统科学的基本理论与方法，以陕北黄土高原多地貌类型区为实验样区，以1：10000比例尺DEM为样本数据，探讨了基于DEM进行沟壑特征信息挖掘的理论与方法，并试图揭示黄土高原沟壑的时空分异特征和相关各要素的内部联系及其相互作用机理。首先，本文明确了沟壑信息挖掘的主要框架，即：黄土高原沟壑信息挖掘主要涉及沟谷网络系统与流域地貌系统的研究两个主要方面。其次，运用六个不同的新定量指标，从不同侧面研究了沟壑信息的个体特征与空间分布特征；首次提出了沟谷网络节点、沟谷深度信息熵等新的概念以及与此相关的新的分析方法，丰富了黄土高原沟壑研究的理论与方法。最后，本文把以上分析方法运用到陕北黄土高原不同地貌类型区，得到了陕北黄土高原沟壑特征的南北空间分异性规律，并对其内在成因进行了讨论。更多还原

【Abstract】 The characteristic of gully is the main landform characteristic ofloess plateau. Applying the theories of GIS, Geomorphology, Hydrology and Systems Science, taking the Loess Plateau of North Shaanxi Province, China as the research area, this dissertation explored the basic theories and techniques of information mining about gully from DEMs and try to reveal the spatial distribution of the characteristic of gully in the area. Firstly, the main structure of information mining about gully has been ascertained in this dissertation. Secondly, the theory and techniques about gully’s information mining has been discussed by six indexes. Some new academic concepts and correlative analysis approaches were firstly put forward. This will make deep and positive influence on developing the theory of the loess plateau and establishing the gully spectrum of the loess plateau. Finally, the above mentioned theory and techniques were used to analyse the characteristic of gully in different geomorphologic type areas of the Loess Plateau of North Shaanxi Province. Its spatial distribution was got and the main influencing factors are discussed.更多还原