3S技术在丹江口水库水源区水土流失动态监测中的应用

Application of 3S Technologies in Dynamic Monitoring of Soil Erosion in the Source Area of the Danjiangkon Reservoir

主要介绍了3S技术在丹江口水库水源区水土流失动态监测项目中的应用。首先阐述了3S技术的特点、项目实施基本指标和项目作业技术系统;其次重点叙述了3S技术在项目实施中的技术流程,包括资料收集、地形图矢量化、矢量数据空间分析、TM遥感影像处理、野外调查建立解译标志、遥感解译、土壤侵蚀强度计算、解译成果野外校核、数据库集成和用户界面开发10个步骤。最后列举了项目实施成果,并就3S技术在区域水土流失监测中的优势进行了叙述。

This paper briefly introduces the application of 3S （GIS, RS and GPS） technologies in the dynamic monitoring of soil erosion in the source area of the Danjiangkon reservoir. It starts from an introduction of the technical features of 3S technologies, followed by a detailed explanation for the 10 steps on how to proceed with the task, i.e., data collection, vectorization of contour maps, spatial analysis of vector data, geometric correction of remote sensing images, spectrum sampling of images, interpretation, computation of soil loss intensity, field verification of the outputs, database integration and user interface development. Finally, the paper illustrates the real application of this achievement, as well as the advantages of the 3S technologies for soil and water loss monitoring.