论文部分内容阅读
1 地理信息系统的诞生地理信息系统是处理地理空间数据的一种工具,是资源与环境管理的重要手段,至今已有三十年的历史.本世纪60年代,加拿大政府需要编制土地资源图和森林资源图来预测和控制土地利用和森林消长变化,但由于这种资源图用传统的编制方法难以完成,必须寻求一种新手段加以解决.1960年,国际知名的加拿大地理信息系统专家R.F.Tomlin-son第一次提出了应用计算机分析和处理土地资源数据和森林资源数据设想.1962年,他利用计算机在森林分类和统计上取得了成功,开发出了世界上第一个数据分析系统.1968年他在联邦科学与工业
Geographic information system was born Geographic information system is a tool to deal with geospatial data is an important means of resources and environmental management, has been 30 years of history .60 century, the Canadian government needs to prepare the map of land resources and Forest resources map to predict and control land use and forest growth and decline, but because of this resource map difficult to complete with traditional compilation methods, we must find a new means to solve.In 1960, the internationally renowned Canadian GIS expert RFTomlin -son for the first time proposed the use of computer analysis and processing of land resources data and forest resources data assumptions .1962, he used the computer in forest classification and statistical success, developed the world’s first data analysis system .1968 In the year he is in federal science and industry