基于DEM的黄土沟头地貌研究

项目名称： 基于DEM的黄土沟头地貌研究

项目编号： No.41471331

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 天文学、地球科学

项目作者： 朱红春

作者单位： 山东科技大学

项目金额： 80万元

中文摘要： 沟头是黄土沟谷中最活跃的空间区域。黄土沟头具有丰富的个体与群体形态、复杂的自然与人为成因、显著的空间与时间差异、规律的发育与演化轨迹，成为兼具类型、结构、形态、成因等地貌学涵义的独特地貌景观。黄土沟头地貌特征的时空分异规律，不仅反映了黄土沟谷的形成与发育机理，又从一个重要侧面揭示着黄土地貌的演化进程。本项目拟系统、全面构建黄土沟头地貌的概念模型及其特征指标体系，研究以多尺度DEM为基本信息源，获取黄土沟头和量化指标的方法；分析黄土沟头个体与群体特征，研究黄土沟头的区域差异性；基于多样区数据分析和人工模拟实验，研究黄土沟头发育与演化的基本规律与影响因素，建立其发育演化模型，藉此研究黄土地貌的发育演化进程。本课题以沟头为对象，对黄土沟谷地貌的形态格局和时空演化规律进行系统深入的研究，不仅期待发展和完善面向沟谷的数字地形分析方法，更渴望实现对黄土地貌时空格局演变规律及其内因机理研究的新突破。

中文关键词： 数字地形分析；数字高程模型；地形特征提取；黄土地貌；沟头

英文摘要： The gully head is the most active spatial zone in the loess gully system. The loess gully head has abundant individual and group morphology, complex natural and man-made cause, significant difference in space and time, regular development and evolution trajectory. So, the gully head become one special landform which has geomorphologic meaning such as type, stucture, morphology, cause and so on. The variation of space and time of gully head landform characters reflects the mechanism of loess gully formation and development, and it also reveals the evolution process of loess landform from an important sight. This project would like to systematically establish the full definition of loess gully head and its' character indicator system. Based on multi-scale DEMs and others spatial data, the method of achieving the loess gully head and its' quantitative indicators will be researched. Individual and group character of the loess gully head will be analyzed and so regional differences of the loess gully head also researched. Based on data analysis in multi test areas and artificial experiments, basic patterns and influence factors of the loess gully head's development and evolution will be researched, and the develop and evaluate model will be established to further study the process of development and evolution of the loess landforms. In this project, the morphological pattern and the space-time evolution of loess gully landforms will be in-depth systematically researched. Through the research results, the digital terrain analysis methods for gully analysis will be develop and improve, and a new breakthrough in the temporal and spatial evolution law and internal mechanism of the loess landform will be desirably achieved.

英文关键词： Digital terrain analysis;Digital elevation model;Terrain feature extraction;Loess landform;Gully head