The purpose of this study is to develop a land classification system for national land use and land cover database building and macro land resources dynamic monitoring.
研究目的：研制基于遥感的土地利用与覆被分类系统，为国家土地利用与覆被基础数据库建设和宏观土地资源遥感动态监测提供分类依据。
The Landsat images of 4 time phases were used to investigate the dynamic changes of land cover at the mouth of the Yellow River from 1976 to 2000.
利用遥感和计算机技术，选用4个不同时相的陆地卫星影像对黄河三角洲河口地区从1976年到2 0 0 0年的土地覆盖变化进行了动态研究。
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