[1]余 莉,甘 淑*,袁希平.喀斯特山地流域边界多层次提取的径流树模型[J].山地学报,2016,(05):615-622.[doi:10.16089/j.cnki.1008-2786.000169]
　YU Li,GAN Shu,YUAN Xiping.A Stream-tree Model for Drainage Boundary Extraction of Multi-hierarchical in Karst Mountains[J].Mountain Research,2016,(05):615-622.[doi:10.16089/j.cnki.1008-2786.000169]
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喀斯特山地流域边界多层次提取的径流树模型()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2016年05期
页码:
615-622
栏目:
山地信息技术
出版日期:
2016-09-30

文章信息/Info

Title:
A Stream-tree Model for Drainage Boundary Extraction of Multi-hierarchical in Karst Mountains
文章编号:
1008-2786-(2016)5-615-08
作者:
余 莉;  甘 淑*;  袁希平
昆明理工大学国土资源工程学院, 云南 昆明 650093
Author(s):
YU Li;  GAN Shu;  YUAN Xiping
Faculty of Land and Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China
关键词:
流域边界;  喀斯特山地;  空间粒度;  径流树模型
Keywords:
drainage boundary;  karst mountains;  spatial granularity;  a stream-tree model
分类号:
P2081
DOI:
10.16089/j.cnki.1008-2786.000169
文献标志码:
A
摘要:
流域边界的确定是进行山地区域脆弱生态环境信息分析、评价及资源合理配置的重要基础,但提取过程中往往存在流域空间单元图斑破碎、流域空间粒度单一的不足。研究考虑了喀斯特山地的地表环境条件特殊性,综合数字水文地形模型在喀斯特流域边界提取的优势,提出了喀斯特山地流域边界多层次提取的径流树模型。方法基于坡面径流模拟算法对单一径流和集水区的准确划分,构建空间径流树模型,并以径流末端或出水口作为搜索终止条件,搜索判断所有径流的空间相交关系以控制不同层次的流域集水区合并,算法时间复杂度为O(nlogn)。最后,实验验证运用算法对珠江源头流域进行了四个层次的流域提取处理,提取得到的不同层次细节的流域界线,并与综合云南省流域分布图、等高线和人工实测的流域界线相吻合。
Abstract:
Drainage boundary extraction is the foundation of analyzing and evaluating fragile eco-environment information and reasonably allocating resources in mountain areas. However, in single spatial granularity, some drainage is divided into small pieces with meaningless. Considering the particularity of land surface environment in Karst Mountains, and integrating the advantages of digital hydrology and geomorphology model in Karst drainage boundary extraction, our research proposed a stream-tree model for drainage boundary extraction of multi-hierarchical in Karst Mountains. The overland flow simulation approach is used to receive streams and catchments accurately. Taking the end of streams or outlets as terminal conditions, the algorithm searches and judges the spatial intersection relationship of streams to merge catchments what belong to the same drainage in different hierarchies. These features are within O(nlogn) time, where n time, where the number of streams. Finally, by the stream-tree model, experiment extracts drainage boundaries with different details in four hierarchies at the source of Pearl River. Results were consistent with drainage boundary which is drawn by the figure of basin distribution, contours, and artificial surveying in Yunnan province.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期(Received date):2015-10-05; 修回日期(Accepted):2015-11-26。
基金项目(Foundation item):国家自然科学基金-地区科学基金项目(41561083; 71163023; 41261092)。[National Natural Science Foundation of China(41561083; 71163023; 41261092).]
作者简介(Biography):余莉(1987-),女,云南开远人,博士研究生,主要从事空间数据挖掘、建模与分析研究。[Yu Li(1987-), female, born in Kaiyuan, Yunnan province,Ph.D candidate,research on spatial data mining, modeling and analysis.] E-mail: woshiyuli@126.com
*通信作者(Corresponding author):甘淑(1964-),女,云南腾冲人,博士,教授,主要从事摄影测量与遥感、土地资源管理。[Gan Shu(1964-), female, born in Tengchong, Yunnan province, Ph D, professor, research on photogrammetry, remote sensing and management of land resources.] E-mail:18388180059@163.com
更新日期/Last Update: 2016-09-30