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数字高程模型信息提取与数字水文模型研究进展
引用本文:任立良,刘新仁.数字高程模型信息提取与数字水文模型研究进展[J].水科学进展,2000,11(4):463-469.
作者姓名:任立良  刘新仁
作者单位:河海大学水文水资源及环境学院, 江苏南京210098
基金项目:国家重点基础研究专项经费资助项目(G1999043400)和国家自然科学基金资助项目(49794030)
摘    要:回顾了数字高程模型(DEM)数据的信息提取方法,阐述了由DEM提取的信息在水文水资源领域应用的现状,探讨了数字模型在水文科学中的作用和数字水文在数字地球所处的地位及应用前景。

关 键 词:数字化    数字高程模型    地理信息系统    水文模型
文章编号:1001-6791(2000)04-0463-07
收稿时间:2000-05-08
修稿时间:2000年5月8日

A Review of the Digital Elevation Model Extraction and Digital Hydrological Modeling
REN Li-liang,LIU Xin-ren.A Review of the Digital Elevation Model Extraction and Digital Hydrological Modeling[J].Advances in Water Science,2000,11(4):463-469.
Authors:REN Li-liang  LIU Xin-ren
Affiliation:College of Water Resources and Environment, Hohai University, Nanjing 210098, China
Abstract:In this paper, the methodology of drainage network extraction from grid-based the digital elevation model (DEM) is reviewed. Then the current situation of application of information extracted from a DEM data in the field of hydrology and water resources are remarked. It is shown that the digital model plays a great role in data mining in hydrology and water resources. Water-related data measured at gauged stations could be assimilated to areal information over a catchment by the digital model, so as to serve for all trades and professions of national economy. Finally the position and the perspective of the digital hydrology (DH)in digital earth are discussed. The DH is an important component of digital earth. It needs further research.
Keywords:digital  digital elevation model  geographical information system  hydrological modeling
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