GIS系统的发展及应用【摘要】地理信息系统gis的发展阶段。它最初为解决地理问题而起，至今已为一门涉及测绘学科、环境科学、计算机技术等多学科的交叉学科。【关键词】 地理信息系统 发展阶段 应用范围【abstract】 geographic information system gis (geographic information system) stage of development. it was originally to solve the problem and the geography, has so far been for a surveying and mapping discipline involved, environmental science, computer technology science cross discipline.【key word】 gis (geographic information system)stage of developmentapplication scope地理信息系统gis（geograp
