基于3S技术的土地利用动态变化研究  

Dynamic variation of land use based on 3S technology

作　　者：党安荣[1] 史慧珍[1] 何新东[1] 

机构地区：[1]清华大学人居环境研究中心,北京100084

出　　处：《清华大学学报（自然科学版）》2003年第10期1408-1411,共4页Journal of Tsinghua University(Science and Technology)

基　　金：北京市科学技术委员会科技项目(955410400);国家教育振兴计划资助项目(Jc2000006)

摘　　要：3S技术是进行资源环境研究的重要技术手段,在土地利用动态变化研究中,应用3S技术能够快速地获取动态变化信息,并进行空间叠加分析,具有传统方法无可比拟的优越性。该文以北京市密云县为例,探讨了基于3S技术的土地利用动态变化研究方法;并在3S技术支持下,对密云县1991年到2001年的土地利用状况进行了定量的变化分析。结果表明:从1991年到2001年,密云县土地利用变化呈现出下列特点——林地面积持续增加,耕地面积不断减少,密云水库面积明显减少,形势比较严峻。3S technology, which refers to remote sensing (RS), geographic information system (GIS), and global position system (GPS), is very important for natural resource investigation and environment protection. Dynamic studies of land use by 3S technology can quickly identify land use variations in real time, and the related spatial information can be easily analyzed. The 3S technology was used to study the dynamic variation of land use in Miyun County. Land use information for Miyun County in 1991, 1996, and 2001 was obtained from TM/ETM satellite images using image processing software. The dynamic variation was analyzed using a GIS overlay and statistical analysis. The result shows that the forested area increased gradually from 1991 to 2001 while the farmland decreased. The area of Miyun Reservoir which is a drinking water source for Beijing also obviously decreased.

关 键 词：密云县 土地利用 动态变化 3S技术 林地面积 耕地面积 水库面积 GIS GPS RS 

分 类 号：F301.24[经济管理—产业经济] P208[天文地球—地图制图学与地理信息工程]