摘要
自然界中大型蜿蜒河流的平面形态是一种多尺度分形结构.笔者对蜿蜒河流平面形态进行了几何分形分析,计算了蜿蜒河流河道中心线的分形盒维数,并利用分形维数对大型河流的弯曲度和不规则程度进行了描述.另外,建立了对蜿蜒河流河弯形态进行识别、概化以及特征量统计分析的方法,并将其应用到黄河、长江等河流的几何形态统计分析中.河弯形态的统计结果能够为有关工程的建设、河流生态修复及理论分析等提供信息支持.
The planar shape of large scale meandering rivers in nature is a kind of multi-scale fractal structure, for which, fractal analysis was carried out in this paper by calculating the fractal box dimension of the center line of meandering river channels. The curvature and irregularity of large scale rivers were described with fractal dimensions. Besides, a method was established for river meander identification, generalization and statistic, and then applied in the analysis of the geometric shape of the Yellow River and the Yangtze River, etc. Statistic results of river meanders provide valuable information for related engineering construction, river recovery and theoretical analysis.
出处
《天津大学学报》
EI
CAS
CSCD
北大核心
2008年第9期1052-1056,共5页
Journal of Tianjin University(Science and Technology)
基金
国家重点基础研究发展计划资助项目(2007CB714101)
国家自然科学基金资助项目(40776045)
教育部新世纪优秀人才支持计划资助项目
关键词
蜿蜒河流
分形几何
盒维数
统计分析
meandering river
fractal geometry
box dimension
statistic analysis
