| Arc Hydro Tools及多源DEM提取河网与精度分析——以洮儿河流域为例 |
| |
| 引用本文： | 曾红伟,李丽娟,柳玉梅,李斌,张永萱.Arc Hydro Tools及多源DEM提取河网与精度分析——以洮儿河流域为例[J].地球信息科学,2011,13(1):22-31. |
| |
| 作者姓名： | 曾红伟 李丽娟 柳玉梅 李斌 张永萱 |
| |
| 作者单位： | 中国科学院地理科学与资源研究所;中国科学院研究生院;北京师范大学地理学与遥感科学学院; |
| |
| 基金项目： | 中国科学院知识创新工程重要方向项目(KZCX2-YW-Q06-1) |
| |
| 摘 要： | 本文简要分析了HYDRO1K、SRTM3-2、ASTER GDEM 3种数据源基本特征,对数据的水平空间分辨率、现势性、覆盖范围、误差来源进行了比较;阐述了Arc Hydro Tools提取数字河网、划分流域及子流域方法的关键步骤;并以洮儿河流域为研究对象,分析了有(无)河网辅助条件下,3种初始DEM在不同地貌类型中数...
|
| 关 键 词： | 多源DEM 河网辅助 河网提取 流域划分 |
| 收稿时间： | 2010-04-20; |
Accuracy Analysis of Multisource DEMs on Extracted River Networks and Drainage Basin by Arc Hydro Tools: A Case Study of Taoerhe River Basin |
| |
| ZENG Hongwei,LI Lijuan,LIU Yumei,LI Bin,ZHANG Yongxuan.Accuracy Analysis of Multisource DEMs on Extracted River Networks and Drainage Basin by Arc Hydro Tools: A Case Study of Taoerhe River Basin[J].Geo-information Science,2011,13(1):22-31. |
| |
| Authors: | ZENG Hongwei LI Lijuan LIU Yumei LI Bin ZHANG Yongxuan |
| |
| Institution: | ZENG Hongwei1,2,LI Lijuan1,LIU Yumei1,LI Bin1,ZHANG Yongxuan3(1.Institute of Geographical Sciences and Natural Resources Research,CAS,Beijing 100101,China,2.Graduate University of Chinese Academy of Sciences,Beijing 100049,3.School of Geography,Beijing Normal University,Beijing 100875,China) |
| |
| Abstract: | To extract digital rivers,catchments and sub-catchments from DEM is a fundamental problem in hydrologic analysis,simulation and non-point source(NPS) pollution management.The method and the accuracy of extraction from different DEMs were introduced.This paper mainly includes three parts.Firstly,the fundamental characteristics of HYDRO1K,SRTM3-2 and ASTER GDEM were analyzed,and the differences of spatial resolution levels,trends,coverage area and errors of the three data sources were compared.Secondly,the ke... |
| |
| Keywords: | multisource DEMs aid of river network river network extraction catchment delineation |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《地球信息科学》浏览原始摘要信息 |
| 点击此处可从《地球信息科学》下载免费的PDF全文 |
|
