In the soil resource management information system based on GIS, the most basic operations are the operation of map, the attribute data inquiry and statistics and spatial data inquiry as well.
在基于GIS的土壤资源管理信息系统中，最基本的操作是对地图的操作、属性数据的查询和统计以及空间数据的查询。
SOTER Project utilizes information technology to develop a world soil and terrain database, containing digitized map units and attribute data in a rational database management system.
本文介绍SOTER项目是利用目前已有的信息技术，建立一个包含数字化的地图单元和它们属性数据的世界土壤和土地数据库。
The principle and methods of monitoring the soil moisture based on remote sensing information are reviewed. Especially much attention was paid on the data assimilation method.
总结了当前国内外基于遥感信息监测土壤水分的原理和方法，特别是对数据同化法进行了着重阐述。
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