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 .该数据库的主要功能是为已完善起来的世界土壤和土地资源变化的制图和监测提供必要的数据 .在此基础上提出我国土地资源多尺度数据库的建库模式 ,SOTER单元概念的发展 ,多尺度数据库的划分和相互之间的衔接方法 This article describes the SOTER project, which uses current information technology to create a world soil and land database containing digitized map units and their attribute data. The main function of this database is to map the well-established changes in the world’s soil and land resources And monitoring to provide the necessary data.On the basis of this, we put forward the construction mode of multi-scale database of land resources in our country, the development of concept of SOTER unit, the division of multi-scale database and the connection method between them