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地理信息系统(Geographical Infonnation System,简称GIS)是一门介于地球科学与信息科学之间的交叉学科,也是近年来迅速发展起来的一门新兴技术学科。它将地学空间数据与计算机技术相结合,通过系统建立、操作与模型分析,产生对资源、环境、区域规划、管理决策、灾害防治、环境保护等方面的有用信息。一、地理信息系统的发展在国际上,地理信息系统的发展经历了三个阶段: 1.起源阶段。20世纪60年代,加拿大国家土地调查局为了处理大量的土地
Geographic Information System (GIS) is an interdisciplinary science between Earth science and information science. It is also an emerging technology discipline that has rapidly developed in recent years. It integrates spatial data from geosciences with computer technology and generates useful information on resources, environment, regional planning, management decision-making, disaster prevention, and environmental protection through system establishment, operation, and model analysis. First, the development of geographic information systems In the world, the development of geographic information systems has gone through three stages: 1. The origin of the stage. In the 1960s, the Canadian National Land Survey conducted a lot of land