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| ANUDEM和TIN两种建立DEM方法的对比研究 | |
| 引用本文： | 杨勤科,TimR.McVicar,Tom G.VanNiel,李领涛.ANUDEM和TIN两种建立DEM方法的对比研究[J].水土保持通报,2006,26(6):84-88. |
| 作者姓名： | 杨勤科 TimR.McVicar Tom G.VanNiel 李领涛 |
| 作者单位： | 1. 中国科学院,水利部,水土保持研究所,陕西,杨凌,712100;西北农林科技大学,水土保持研究所,陕西,杨凌,712100 2. 澳大利亚,联邦科工组织水土资源研究所,堪培拉 3. 澳大利亚,联邦科工组织水土资源研究所,泊斯 |
| 基金项目： | 国家科技支撑计划;黄河水利委员会治黄专项基金 |
| 摘 要： | 针对流域水文和土壤侵蚀定量模拟分析需要,对基于TIN和Hutchinson方法建立的DEM表现地形形态和起伏的能力进行了对比研究。结果表明,基于TIN建立的DEM始终存在一些平顶现象,一些较小的侵蚀沟被忽略,其上提取的河流不完全连续,多处出现多重线条河流,因而不能如实地反映地形起伏的细部特征。而基于ANUDEM建立的DEM,其派生等高线的形状与输入等高线吻合较好,较好地表现了地形的形态和起伏,对地形和坡度的反映更加连续和光滑,其上提取的河流信息基本与地形图上的河流一致。 |
| 关 键 词： | 黄土高原 数字高程模型(DEM) |
| 文章编号： | 1000-288X(2006)06-0084-05 |
| 收稿时间： | 07 25 2006 12:00AM |
| 修稿时间： | 08 10 2006 12:00AM |
Comparison of Hydro-geomorphology Representing Between DEMs by TINand ANUDEM Approaches |
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| YANG Qinke,Tim R. McVicar,Tom G. Van Niel and LI Lingtao.Comparison of Hydro-geomorphology Representing Between DEMs by TINand ANUDEM Approaches[J].Bulletin of Soil and Water Conservation,2006,26(6):84-88. | |
| Authors: | YANG Qinke Tim R McVicar Tom G Van Niel and LI Lingtao |
| Institution: | 1. Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling , Shaanxi 712100, China ; 2. Institute of Soil and Water Conservation, Northwest Sci-tech University of Agriculture and Forestry, Yangling, Shaanxi 712100, China ; 3. CSIRO Land and Water, Canberra, 2601, ACT, Australia; 4. CSIRO Land and Water, Wembley, 6913, WA, Australia |
| Abstract: | Mainly considering the demand of regional soil erosion and hydrological modeling,the DEMs generated from TIN and Hutchinson's method(ANUDEM),and their representation of the hydro-geomorphology characteristics have been compared.The results show that,in the TIN DEM,there are inevitably flat hilltops,some eroded gullies have been ignored during TIN constructing,the stream networks based on the DEM is not continuous,and multiple lines rivers exist.In Hutchinson method based DEM,the DEM derived contours match to the original input contours,and the relief and slope can be represented smoothly and continuously.Therefore,the hydro-geomorphological features can be represented correctly even no rivers input to drive ANUDEM. |
| Keywords: | ANUDEM |
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