更新地理信息系统数据库的探讨—关于土地利用和土地复盖数据的更新

doi:10.13249/j.cnki.sgs.1986.01.13

摘要/Abstract

摘要： 地理信息系统(GIS)生存的关键之一是其数据库中数据的现势性.土地利用和土地复盖数据是具有代表性的数据.它易受自然条件变化和人类活动影响.航天遥感以其获得综合信息的周期性、复盖范围、速度和经济效益表明它将成为更新 GIS 中土地利用和土地复盖数据的主要手段.更新过程的实质是通过数字图象处理系统实现 GIS 和遥感系统联结.配准和分类精度是图象处理中两个主要问题.地理信息系统可支持更新过程的图象处理.

Abstract: One of keys related to the existence of GIS is the up-to-date data in its database.Land use and land cover data are the important kind of data in current GIS.The land use and land cover condition often changes due to it is easily affected by the changes of natural condition and the activities of human being.So,the appropriate ways for the data capturing and analyzing are needed.Spaceborne remote sensing,owing to its periodicity,speed,scanning scope and the economic benefit to gain the synthatie information,is becoming the main data source for updating land use and land cover data in the database of GIS. The crux of the updating procedure is to combine the remote sensing system and the GIS by means of the digital image processing system.The accuracies on locating and classifying are considered as the crucial problems in image processing. Author thinks that remote sensing image is a model of a region,which has been compressed in the spatial dimensions and synthesized with its essential factors on surface.So the information from the images evidently has a regional geographic pattern.The GIS just has the basic data and the analysis software for the registration and analysis of the spatial information from remote sensing and other sources.In this paper,author introduces a tentative model experiment on the Dukou regional environment information system after briefly disscusing some related researches at home and abroad.

林珲. 更新地理信息系统数据库的探讨—关于土地利用和土地复盖数据的更新[J]. 地理科学, 1986, 6(1): 13-21,102.

LIN HUI. APPROACH TO THE UPDATING OF DATABASE OF GIS:ON UPDATING THE LAND USE AND LAND COVER DATA[J]. SCIENTIA GEOGRAPHICA SINICA, 1986, 6(1): 13-21,102.

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