ISWC OpenIR  > 水保所知识产出(1956---)
基于DEM 的黄土高原沟谷节点分形特征研究
苟娇娇1; 王飞1; 罗明良2,3; 邹宝裕2; 白雷超2
2016
Source Publication水土保持学报
Volume30Issue:3Pages:109-114
Abstract

以ASTER GDEM 为主要数据源,在黄河中游多沙粗沙区提取22个小流域的沟谷节点(channel
junctions,CJs),采用计盒、关联维2种方法对比研究CJs分形特征,并讨论其分形的内涵与影响因素;基于
CJs分形特征的聚类分析,探讨样区的侵蚀程度差异。结果表明:(1)黄土高原CJs分形特征明显,不同分
形方法度量的几何维数变化相同,盒维数大的样区关联维数也大;(2)CJs分形特征与黄土地貌的发育相
关,不同地貌类型呈现出不同的分形维数;但2种分形方法度量出的分维值差异均能与地貌类型保持对
应,分形维数排序为:黄土梁峁状丘陵沟壑>黄土破碎塬>黄土梁状丘陵沟壑>黄土塬>黄土山地>黄土
峁梁状丘陵沟壑>黄土风蚀沙丘;(3)依据CJs盒维数、关联维数对样区进行聚类分析,结果表明22个样
区划分为4种类型,大致对应剧烈侵蚀区、强烈侵蚀区、中度侵蚀区、轻度侵蚀区。研究表明分形方法能较
好的刻画黄土高原不同地貌沟谷节点特征,并能在一定程度上反映沟谷侵蚀状况。

Other Abstract

In the paper,22typical watersheds were selected in the MCSR of middle reaches of Yellow River to
probe the fractal characteristics of CJs.The ASTER GDEM was used as the basic data sources,and the box
dimension(BD)and correlation dimension(CD)were used to measure the difference of the spatial patterns of
the CJs.In addition,the meanings and the influence factors of BD and CD were discussed.Finally,a cluster
analysis was performed based on BD and CD to investigate the difference of soil erosion.(1)The results
showed that the fractal characteristics of CJs were clear,while the dimension value changed with the measure
methods.Among the 22watersheds,if one’s BD was bigger than others,so did it’s CD.(2)The results also
showed that the CJs’fractal characteristics were relevant with the geomorphologic types of Loess Plateau.
Although the value of BD and CD was different in different watersheds,while the sorted groups always
remained the same,which were sorted as loess ridge-hillock gully,broken loess plane,loess ridge gully,loess
plane,loess hill,loess hillock-ridge gully and wind erosion loess sand dunes.(3)When BD and CD were
used as the main input parameters in the procedure of cluster analysis,the results showed that the 22watersheds
could be divided into 4groups.The groups could be classified into 4different erosion ones,namely
serious erosion regions,strong erosion regions,medium erosion regions and light erosion regions.All in all,
the results showed that the fractal dimensions could be used to depict the different patterns of CJs in Loess
Plateau,and that could be regarded as the indicators of erosion of loess gullies.

Keyword沟谷节点 盒维数 关联维 黄河中游多沙粗沙区 Dem
Indexed By中文核心期刊要目总览
Language中文
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/8623
Collection水保所知识产出(1956---)
Affiliation1.中国科学院水利部水土保持研究所
2.西华师范大学国土资源学院
3.南京师范大学地理科学学院
First Author Affilication中国科学院水利部水土保持研究所
Recommended Citation
GB/T 7714
苟娇娇,王飞,罗明良,等. 基于DEM 的黄土高原沟谷节点分形特征研究[J]. 水土保持学报,2016,30(3):109-114.
APA 苟娇娇,王飞,罗明良,邹宝裕,&白雷超.(2016).基于DEM 的黄土高原沟谷节点分形特征研究.水土保持学报,30(3),109-114.
MLA 苟娇娇,et al."基于DEM 的黄土高原沟谷节点分形特征研究".水土保持学报 30.3(2016):109-114.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[苟娇娇]'s Articles
[王飞]'s Articles
[罗明良]'s Articles
Baidu academic
Similar articles in Baidu academic
[苟娇娇]'s Articles
[王飞]'s Articles
[罗明良]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[苟娇娇]'s Articles
[王飞]'s Articles
[罗明良]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.