3S技术是获取、处理、分析、管理、精确定位具有空间数据特征地物信息的一种信息技术手段，在生态、城市（绿地）规划、资源、环境、土地管理、监测、利用等方面具有其他信息技术无可比拟的优势。本课程在详细介绍3S技术：遥感、地理信息系统、全球定位系统的概念内涵，技术体系特色、优势及应用范围的基础上，将着重讲述3S技术在城市绿地规划，资源环境管理，数字农业，农产品安全监控等方面的具体应用。通过本课程的学习，学生不仅可以了解学习3S技术基础理论，而且通过课堂演示，上机操作将掌握3S技术的实际操作和应用技术。

3S technologies are information technologies to gain, manage, analysis and accurately spatial information. Comparing other information technique, it has unexampled advantage on ecology, urban programming, resource, environment, land use and management, monitoring and application. 3S technologies will be introduced detailedly in this course, including the conception and meaning of Remote Sensing, Geography Information System and Global Position System, the characteristic of the technologies system, advantage and area of application. Based on that, the applications of 3S technologies on urban green land programming, resource environment management, digital agriculture, farm product safety monitoring etc will be introduced in detail. From this class, students not only learn basic principles of 3S technologies , but also learn practice and applications by watching demonstration in class and handling themselves.