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在阐述“3S”技术特点的基础上,以四川木里藏族自治县的梭罗沟和如米沟为研究区,介绍了“3S”技术在水土流失信息提取中的技术要求、数据收集和工作流程,并对研究区水土流失信息提取的结果进行了评价。实例研究证明,“3S”技术作为研究水土流失的重要技术手段之一,可以准确、快速、连续地提取研究区水土流失的特征指标,能够满足研究区水土流失现状信息提取的要求,使研究区水土流失信息得到有效的分析和使用。
On the basis of expatiating on the technical characteristics of “3S ”, the author introduced the technical requirements of “3S ” technology in information extraction of soil and water loss on the basis of Solo Valley and Rumigou Valley in MuLi Tibetan Autonomous County of Sichuan Province, Collection and workflow, and evaluated the results of soil and water loss information extraction in the study area. The case study shows that the “3S ” technology, as one of the important techniques for studying soil and water loss, can accurately, rapidly and continuously extract the characteristic indexes of soil and water loss in the study area and can meet the requirements of information extraction of soil and water loss in the study area. Soil and water loss information in the study area has been effectively analyzed and used.