中国1∶100万数字地貌信息集成试验及特征分析  

Key Topics on Information Integration of Digital Geomorphology in China

作　　者：龙恩[1,2] 程维明[1] 刘海江[1] 柴慧霞[1] 李锐[1] 

机构地区：[1]中国科学院地理科学与资源研究所资源与环境信息系统国家重点实验室 [2]中国科学院研究生院,北京100039

出　　处：《地球信息科学》2007年第2期91-95,F0003,共6页Geo-information Science

基　　金：国家自然科学青年基金(40401048);国家自然科学杰出青年基金(40225004);科技部科学数据平台项目(2005DKA32300-07)。

摘　　要：地貌是自然地域综合体中的主导因素,数字地貌强调了以数字形式将所有地貌信息集成于一起。本文在总结前人研究成果的基础上,以1∶100万标准分幅中的张家口幅(编号为k-50)为例,探讨了以遥感数据(ETM和TM)为基础的数字地貌信息集成方法,体现了分层分级的集成原则,便于信息的数字化、定量化分析。对其特征分析表明:地貌信息的存储、应用及分类分级指标充分体现了其数字化与定量化特征;它们为生成各种专题图件、评判划分指标的合理性以及国民经济建设等提供了分析基础,这将在地貌研究、农业生产、国防建设、环境建设和生态修复等方面发挥重要作用。Geomorphology is one of the most important components of physiographic environment. Traditional geomorphologic mapping method mainly depends on handwork and field surveying; this mapping method needs enormous human work, and long mapping time. Therefore, this method does not satisfy the needs of information age. With the rapid development of RS and GIS, more and more geomorphologic mapping can be gotten and finished by means of Remote Sensing data indoor in a shorter period of time. This research summarizes the achievements of geomorphologic classification and mapping methodology, and puts forward the concept of digital geomorphology, including digitalization, updating, dynamic and systemic features, which can store all of the geomorphologic information, even update them. New geomorphologic classification system utilizes many layers and classification methodology, which can divide continental landform into seven layers, i.e., altitude and undulating degree basic formation causes, sub-causes, morphology, sub-morphology, slope and aspect, and matter composition. And information integration can be divided into loose and tight ways. There are several characteristics of the digital geomorphology, including digitalization and quantification of all geomorphologic information, spatial analysis, dynamic features and geomorphologic system. Digital geomorphology can play important roles in agricultural production, environmental protection, construction of national defense, etc.

关 键 词：数字地貌 信息集成 遥感 地理信息系统 

分 类 号：P28[天文地球—地图制图学与地理信息工程]